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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:35:05 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:39:31 +0000 |
| commit | 85c675d0d09a45a135bddd15d7b385f8758c32fb (patch) | |
| tree | 76267dbc9b9a130337be3640948fe397b04ac629 /arch/x86/include/asm | |
| parent | Adding upstream version 6.6.15. (diff) | |
| download | linux-85c675d0d09a45a135bddd15d7b385f8758c32fb.tar.xz linux-85c675d0d09a45a135bddd15d7b385f8758c32fb.zip | |
Adding upstream version 6.7.7.upstream/6.7.7
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/include/asm')
48 files changed, 517 insertions, 256 deletions
diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild index 4f1ce5fc4e..a192bdea69 100644 --- a/arch/x86/include/asm/Kbuild +++ b/arch/x86/include/asm/Kbuild @@ -10,5 +10,4 @@ generated-y += unistd_64_x32.h generated-y += xen-hypercalls.h generic-y += early_ioremap.h -generic-y += export.h generic-y += mcs_spinlock.h diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 5af4ec1a0f..d21f48f1c2 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -54,7 +54,7 @@ extern int local_apic_timer_c2_ok; extern bool apic_is_disabled; extern unsigned int lapic_timer_period; -extern int cpuid_to_apicid[]; +extern u32 cpuid_to_apicid[]; extern enum apic_intr_mode_id apic_intr_mode; enum apic_intr_mode_id { @@ -276,7 +276,8 @@ struct apic { u32 disable_esr : 1, dest_mode_logical : 1, - x2apic_set_max_apicid : 1; + x2apic_set_max_apicid : 1, + nmi_to_offline_cpu : 1; u32 (*calc_dest_apicid)(unsigned int cpu); @@ -292,19 +293,19 @@ struct apic { int (*acpi_madt_oem_check)(char *oem_id, char *oem_table_id); bool (*apic_id_registered)(void); - bool (*check_apicid_used)(physid_mask_t *map, int apicid); + bool (*check_apicid_used)(physid_mask_t *map, u32 apicid); void (*init_apic_ldr)(void); void (*ioapic_phys_id_map)(physid_mask_t *phys_map, physid_mask_t *retmap); - int (*cpu_present_to_apicid)(int mps_cpu); - int (*phys_pkg_id)(int cpuid_apic, int index_msb); + u32 (*cpu_present_to_apicid)(int mps_cpu); + u32 (*phys_pkg_id)(u32 cpuid_apic, int index_msb); - u32 (*get_apic_id)(unsigned long x); - u32 (*set_apic_id)(unsigned int id); + u32 (*get_apic_id)(u32 id); + u32 (*set_apic_id)(u32 apicid); /* wakeup_secondary_cpu */ - int (*wakeup_secondary_cpu)(int apicid, unsigned long start_eip); + int (*wakeup_secondary_cpu)(u32 apicid, unsigned long start_eip); /* wakeup secondary CPU using 64-bit wakeup point */ - int (*wakeup_secondary_cpu_64)(int apicid, unsigned long start_eip); + int (*wakeup_secondary_cpu_64)(u32 apicid, unsigned long start_eip); char *name; }; @@ -322,8 +323,8 @@ struct apic_override { void (*send_IPI_self)(int vector); u64 (*icr_read)(void); void (*icr_write)(u32 low, u32 high); - int (*wakeup_secondary_cpu)(int apicid, unsigned long start_eip); - int (*wakeup_secondary_cpu_64)(int apicid, unsigned long start_eip); + int (*wakeup_secondary_cpu)(u32 apicid, unsigned long start_eip); + int (*wakeup_secondary_cpu_64)(u32 apicid, unsigned long start_eip); }; /* @@ -493,16 +494,6 @@ static inline bool lapic_vector_set_in_irr(unsigned int vector) return !!(irr & (1U << (vector % 32))); } -static inline unsigned default_get_apic_id(unsigned long x) -{ - unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR)); - - if (APIC_XAPIC(ver) || boot_cpu_has(X86_FEATURE_EXTD_APICID)) - return (x >> 24) & 0xFF; - else - return (x >> 24) & 0x0F; -} - /* * Warm reset vector position: */ @@ -517,9 +508,9 @@ extern void generic_bigsmp_probe(void); extern struct apic apic_noop; -static inline unsigned int read_apic_id(void) +static inline u32 read_apic_id(void) { - unsigned int reg = apic_read(APIC_ID); + u32 reg = apic_read(APIC_ID); return apic->get_apic_id(reg); } @@ -538,13 +529,14 @@ extern int default_apic_id_valid(u32 apicid); extern u32 apic_default_calc_apicid(unsigned int cpu); extern u32 apic_flat_calc_apicid(unsigned int cpu); -extern bool default_check_apicid_used(physid_mask_t *map, int apicid); extern void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap); -extern int default_cpu_present_to_apicid(int mps_cpu); +extern u32 default_cpu_present_to_apicid(int mps_cpu); + +void apic_send_nmi_to_offline_cpu(unsigned int cpu); #else /* CONFIG_X86_LOCAL_APIC */ -static inline unsigned int read_apic_id(void) { return 0; } +static inline u32 read_apic_id(void) { return 0; } #endif /* !CONFIG_X86_LOCAL_APIC */ diff --git a/arch/x86/include/asm/barrier.h b/arch/x86/include/asm/barrier.h index 35389b2af8..0216f63a36 100644 --- a/arch/x86/include/asm/barrier.h +++ b/arch/x86/include/asm/barrier.h @@ -81,22 +81,4 @@ do { \ #include <asm-generic/barrier.h> -/* - * Make previous memory operations globally visible before - * a WRMSR. - * - * MFENCE makes writes visible, but only affects load/store - * instructions. WRMSR is unfortunately not a load/store - * instruction and is unaffected by MFENCE. The LFENCE ensures - * that the WRMSR is not reordered. - * - * Most WRMSRs are full serializing instructions themselves and - * do not require this barrier. This is only required for the - * IA32_TSC_DEADLINE and X2APIC MSRs. - */ -static inline void weak_wrmsr_fence(void) -{ - asm volatile("mfence; lfence" : : : "memory"); -} - #endif /* _ASM_X86_BARRIER_H */ diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h index 2edf68475f..990eb686ca 100644 --- a/arch/x86/include/asm/bitops.h +++ b/arch/x86/include/asm/bitops.h @@ -94,18 +94,17 @@ arch___clear_bit(unsigned long nr, volatile unsigned long *addr) asm volatile(__ASM_SIZE(btr) " %1,%0" : : ADDR, "Ir" (nr) : "memory"); } -static __always_inline bool -arch_clear_bit_unlock_is_negative_byte(long nr, volatile unsigned long *addr) +static __always_inline bool arch_xor_unlock_is_negative_byte(unsigned long mask, + volatile unsigned long *addr) { bool negative; - asm volatile(LOCK_PREFIX "andb %2,%1" + asm volatile(LOCK_PREFIX "xorb %2,%1" CC_SET(s) : CC_OUT(s) (negative), WBYTE_ADDR(addr) - : "ir" ((char) ~(1 << nr)) : "memory"); + : "iq" ((char)mask) : "memory"); return negative; } -#define arch_clear_bit_unlock_is_negative_byte \ - arch_clear_bit_unlock_is_negative_byte +#define arch_xor_unlock_is_negative_byte arch_xor_unlock_is_negative_byte static __always_inline void arch___clear_bit_unlock(long nr, volatile unsigned long *addr) @@ -293,6 +292,9 @@ static __always_inline unsigned long variable_ffz(unsigned long word) */ static __always_inline unsigned long __fls(unsigned long word) { + if (__builtin_constant_p(word)) + return BITS_PER_LONG - 1 - __builtin_clzl(word); + asm("bsr %1,%0" : "=r" (word) : "rm" (word)); @@ -360,6 +362,9 @@ static __always_inline int fls(unsigned int x) { int r; + if (__builtin_constant_p(x)) + return x ? 32 - __builtin_clz(x) : 0; + #ifdef CONFIG_X86_64 /* * AMD64 says BSRL won't clobber the dest reg if x==0; Intel64 says the @@ -401,6 +406,9 @@ static __always_inline int fls(unsigned int x) static __always_inline int fls64(__u64 x) { int bitpos = -1; + + if (__builtin_constant_p(x)) + return x ? 64 - __builtin_clzll(x) : 0; /* * AMD64 says BSRQ won't clobber the dest reg if x==0; Intel64 says the * dest reg is undefined if x==0, but their CPU architect says its diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h index b3a7cfb0d9..a38cc0afc9 100644 --- a/arch/x86/include/asm/boot.h +++ b/arch/x86/include/asm/boot.h @@ -85,6 +85,8 @@ extern const unsigned long kernel_total_size; unsigned long decompress_kernel(unsigned char *outbuf, unsigned long virt_addr, void (*error)(char *x)); + +extern struct boot_params *boot_params_ptr; #endif #endif /* _ASM_X86_BOOT_H */ diff --git a/arch/x86/include/asm/cacheinfo.h b/arch/x86/include/asm/cacheinfo.h index ce9685fc78..5aa0611998 100644 --- a/arch/x86/include/asm/cacheinfo.h +++ b/arch/x86/include/asm/cacheinfo.h @@ -7,9 +7,6 @@ extern unsigned int memory_caching_control; #define CACHE_MTRR 0x01 #define CACHE_PAT 0x02 -void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c, int cpu); -void cacheinfo_hygon_init_llc_id(struct cpuinfo_x86 *c, int cpu); - void cache_disable(void); void cache_enable(void); void set_cache_aps_delayed_init(bool val); diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h index d536365061..5612648b02 100644 --- a/arch/x86/include/asm/cmpxchg.h +++ b/arch/x86/include/asm/cmpxchg.h @@ -221,12 +221,18 @@ extern void __add_wrong_size(void) #define __try_cmpxchg(ptr, pold, new, size) \ __raw_try_cmpxchg((ptr), (pold), (new), (size), LOCK_PREFIX) +#define __sync_try_cmpxchg(ptr, pold, new, size) \ + __raw_try_cmpxchg((ptr), (pold), (new), (size), "lock; ") + #define __try_cmpxchg_local(ptr, pold, new, size) \ __raw_try_cmpxchg((ptr), (pold), (new), (size), "") #define arch_try_cmpxchg(ptr, pold, new) \ __try_cmpxchg((ptr), (pold), (new), sizeof(*(ptr))) +#define arch_sync_try_cmpxchg(ptr, pold, new) \ + __sync_try_cmpxchg((ptr), (pold), (new), sizeof(*(ptr))) + #define arch_try_cmpxchg_local(ptr, pold, new) \ __try_cmpxchg_local((ptr), (pold), (new), sizeof(*(ptr))) diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h index 25050d953e..fecc4fe1d6 100644 --- a/arch/x86/include/asm/cpu.h +++ b/arch/x86/include/asm/cpu.h @@ -71,26 +71,12 @@ static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {} extern __noendbr void cet_disable(void); -struct ucode_cpu_info; +struct cpu_signature; -int intel_cpu_collect_info(struct ucode_cpu_info *uci); - -static inline bool intel_cpu_signatures_match(unsigned int s1, unsigned int p1, - unsigned int s2, unsigned int p2) -{ - if (s1 != s2) - return false; - - /* Processor flags are either both 0 ... */ - if (!p1 && !p2) - return true; - - /* ... or they intersect. */ - return p1 & p2; -} +void intel_collect_cpu_info(struct cpu_signature *sig); extern u64 x86_read_arch_cap_msr(void); -int intel_find_matching_signature(void *mc, unsigned int csig, int cpf); +bool intel_find_matching_signature(void *mc, struct cpu_signature *sig); int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type); extern struct cpumask cpus_stop_mask; diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index a26bebbdff..a1273698fc 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -168,7 +168,7 @@ extern void clear_cpu_cap(struct cpuinfo_x86 *c, unsigned int bit); */ static __always_inline bool _static_cpu_has(u16 bit) { - asm_volatile_goto( + asm goto( ALTERNATIVE_TERNARY("jmp 6f", %P[feature], "", "jmp %l[t_no]") ".pushsection .altinstr_aux,\"ax\"\n" "6:\n" diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 58cb9495e4..caf4cf2e10 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -97,7 +97,7 @@ #define X86_FEATURE_SYSENTER32 ( 3*32+15) /* "" sysenter in IA32 userspace */ #define X86_FEATURE_REP_GOOD ( 3*32+16) /* REP microcode works well */ #define X86_FEATURE_AMD_LBR_V2 ( 3*32+17) /* AMD Last Branch Record Extension Version 2 */ -/* FREE, was #define X86_FEATURE_LFENCE_RDTSC ( 3*32+18) "" LFENCE synchronizes RDTSC */ +#define X86_FEATURE_CLEAR_CPU_BUF ( 3*32+18) /* "" Clear CPU buffers using VERW */ #define X86_FEATURE_ACC_POWER ( 3*32+19) /* AMD Accumulated Power Mechanism */ #define X86_FEATURE_NOPL ( 3*32+20) /* The NOPL (0F 1F) instructions */ #define X86_FEATURE_ALWAYS ( 3*32+21) /* "" Always-present feature */ @@ -308,10 +308,10 @@ #define X86_FEATURE_SMBA (11*32+21) /* "" Slow Memory Bandwidth Allocation */ #define X86_FEATURE_BMEC (11*32+22) /* "" Bandwidth Monitoring Event Configuration */ #define X86_FEATURE_USER_SHSTK (11*32+23) /* Shadow stack support for user mode applications */ - #define X86_FEATURE_SRSO (11*32+24) /* "" AMD BTB untrain RETs */ #define X86_FEATURE_SRSO_ALIAS (11*32+25) /* "" AMD BTB untrain RETs through aliasing */ #define X86_FEATURE_IBPB_ON_VMEXIT (11*32+26) /* "" Issue an IBPB only on VMEXIT */ +#define X86_FEATURE_APIC_MSRS_FENCE (11*32+27) /* "" IA32_TSC_DEADLINE and X2APIC MSRs need fencing */ /* Intel-defined CPU features, CPUID level 0x00000007:1 (EAX), word 12 */ #define X86_FEATURE_AVX_VNNI (12*32+ 4) /* AVX VNNI instructions */ @@ -443,6 +443,7 @@ /* AMD-defined Extended Feature 2 EAX, CPUID level 0x80000021 (EAX), word 20 */ #define X86_FEATURE_NO_NESTED_DATA_BP (20*32+ 0) /* "" No Nested Data Breakpoints */ +#define X86_FEATURE_WRMSR_XX_BASE_NS (20*32+ 1) /* "" WRMSR to {FS,GS,KERNEL_GS}_BASE is non-serializing */ #define X86_FEATURE_LFENCE_RDTSC (20*32+ 2) /* "" LFENCE always serializing / synchronizes RDTSC */ #define X86_FEATURE_NULL_SEL_CLR_BASE (20*32+ 6) /* "" Null Selector Clears Base */ #define X86_FEATURE_AUTOIBRS (20*32+ 8) /* "" Automatic IBRS */ diff --git a/arch/x86/include/asm/crash_core.h b/arch/x86/include/asm/crash_core.h new file mode 100644 index 0000000000..76af98f4e8 --- /dev/null +++ b/arch/x86/include/asm/crash_core.h @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _X86_CRASH_CORE_H +#define _X86_CRASH_CORE_H + +/* 16M alignment for crash kernel regions */ +#define CRASH_ALIGN SZ_16M + +/* + * Keep the crash kernel below this limit. + * + * Earlier 32-bits kernels would limit the kernel to the low 512 MB range + * due to mapping restrictions. + * + * 64-bit kdump kernels need to be restricted to be under 64 TB, which is + * the upper limit of system RAM in 4-level paging mode. Since the kdump + * jump could be from 5-level paging to 4-level paging, the jump will fail if + * the kernel is put above 64 TB, and during the 1st kernel bootup there's + * no good way to detect the paging mode of the target kernel which will be + * loaded for dumping. + */ +extern unsigned long swiotlb_size_or_default(void); + +#ifdef CONFIG_X86_32 +# define CRASH_ADDR_LOW_MAX SZ_512M +# define CRASH_ADDR_HIGH_MAX SZ_512M +#else +# define CRASH_ADDR_LOW_MAX SZ_4G +# define CRASH_ADDR_HIGH_MAX SZ_64T +#endif + +# define DEFAULT_CRASH_KERNEL_LOW_SIZE crash_low_size_default() + +static inline unsigned long crash_low_size_default(void) +{ +#ifdef CONFIG_X86_64 + return max(swiotlb_size_or_default() + (8UL << 20), 256UL << 20); +#else + return 0; +#endif +} + +#endif /* _X86_CRASH_CORE_H */ diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h index 18fd06f793..a0234dfd10 100644 --- a/arch/x86/include/asm/elf.h +++ b/arch/x86/include/asm/elf.h @@ -7,6 +7,7 @@ */ #include <linux/thread_info.h> +#include <asm/ia32.h> #include <asm/ptrace.h> #include <asm/user.h> #include <asm/auxvec.h> @@ -149,7 +150,7 @@ do { \ ((x)->e_machine == EM_X86_64) #define compat_elf_check_arch(x) \ - (elf_check_arch_ia32(x) || \ + ((elf_check_arch_ia32(x) && ia32_enabled()) || \ (IS_ENABLED(CONFIG_X86_X32_ABI) && (x)->e_machine == EM_X86_64)) static inline void elf_common_init(struct thread_struct *t, diff --git a/arch/x86/include/asm/fb.h b/arch/x86/include/asm/fb.h index 23873da8fb..c3b9582de7 100644 --- a/arch/x86/include/asm/fb.h +++ b/arch/x86/include/asm/fb.h @@ -2,12 +2,14 @@ #ifndef _ASM_X86_FB_H #define _ASM_X86_FB_H +#include <asm/page.h> + struct fb_info; -struct file; -struct vm_area_struct; -void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off); -#define fb_pgprotect fb_pgprotect +pgprot_t pgprot_framebuffer(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset); +#define pgprot_framebuffer pgprot_framebuffer int fb_is_primary_device(struct fb_info *info); #define fb_is_primary_device fb_is_primary_device diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h index 5518298847..b02c3cd3c0 100644 --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -28,7 +28,7 @@ #include <asm/irq.h> #include <asm/sections.h> -#ifdef CONFIG_X86_LOCAL_APIC +#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY struct irq_data; struct pci_dev; struct msi_desc; @@ -105,10 +105,10 @@ static inline void irq_complete_move(struct irq_cfg *c) { } #endif extern void apic_ack_edge(struct irq_data *data); -#else /* CONFIG_X86_LOCAL_APIC */ +#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ static inline void lock_vector_lock(void) {} static inline void unlock_vector_lock(void) {} -#endif /* CONFIG_X86_LOCAL_APIC */ +#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ /* Statistics */ extern atomic_t irq_err_count; diff --git a/arch/x86/include/asm/init.h b/arch/x86/include/asm/init.h index 5f1d3c421f..cc9ccf61b6 100644 --- a/arch/x86/include/asm/init.h +++ b/arch/x86/include/asm/init.h @@ -2,6 +2,8 @@ #ifndef _ASM_X86_INIT_H #define _ASM_X86_INIT_H +#define __head __section(".head.text") + struct x86_mapping_info { void *(*alloc_pgt_page)(void *); /* allocate buf for page table */ void *context; /* context for alloc_pgt_page */ diff --git a/arch/x86/include/asm/irq_work.h b/arch/x86/include/asm/irq_work.h index 800ffce0db..6b4d36c951 100644 --- a/arch/x86/include/asm/irq_work.h +++ b/arch/x86/include/asm/irq_work.h @@ -9,7 +9,6 @@ static inline bool arch_irq_work_has_interrupt(void) { return boot_cpu_has(X86_FEATURE_APIC); } -extern void arch_irq_work_raise(void); #else static inline bool arch_irq_work_has_interrupt(void) { diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h index 071572e23d..cbbef32517 100644 --- a/arch/x86/include/asm/jump_label.h +++ b/arch/x86/include/asm/jump_label.h @@ -24,7 +24,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:" + asm goto("1:" "jmp %l[l_yes] # objtool NOPs this \n\t" JUMP_TABLE_ENTRY : : "i" (key), "i" (2 | branch) : : l_yes); @@ -38,7 +38,7 @@ l_yes: static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { - asm_volatile_goto("1:" + asm goto("1:" ".byte " __stringify(BYTES_NOP5) "\n\t" JUMP_TABLE_ENTRY : : "i" (key), "i" (branch) : : l_yes); @@ -52,7 +52,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { - asm_volatile_goto("1:" + asm goto("1:" "jmp %l[l_yes]\n\t" JUMP_TABLE_ENTRY : : "i" (key), "i" (branch) : : l_yes); diff --git a/arch/x86/include/asm/kmsan.h b/arch/x86/include/asm/kmsan.h index 8fa6ac0e2d..d91b37f5b4 100644 --- a/arch/x86/include/asm/kmsan.h +++ b/arch/x86/include/asm/kmsan.h @@ -64,6 +64,7 @@ static inline bool kmsan_virt_addr_valid(void *addr) { unsigned long x = (unsigned long)addr; unsigned long y = x - __START_KERNEL_map; + bool ret; /* use the carry flag to determine if x was < __START_KERNEL_map */ if (unlikely(x > y)) { @@ -79,7 +80,21 @@ static inline bool kmsan_virt_addr_valid(void *addr) return false; } - return pfn_valid(x >> PAGE_SHIFT); + /* + * pfn_valid() relies on RCU, and may call into the scheduler on exiting + * the critical section. However, this would result in recursion with + * KMSAN. Therefore, disable preemption here, and re-enable preemption + * below while suppressing reschedules to avoid recursion. + * + * Note, this sacrifices occasionally breaking scheduling guarantees. + * Although, a kernel compiled with KMSAN has already given up on any + * performance guarantees due to being heavily instrumented. + */ + preempt_disable(); + ret = pfn_valid(x >> PAGE_SHIFT); + preempt_enable_no_resched(); + + return ret; } #endif /* !MODULE */ diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h index a2e9317aad..5939694dfb 100644 --- a/arch/x86/include/asm/kprobes.h +++ b/arch/x86/include/asm/kprobes.h @@ -113,8 +113,6 @@ struct kprobe_ctlblk { }; extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); -extern int kprobe_exceptions_notify(struct notifier_block *self, - unsigned long val, void *data); extern int kprobe_int3_handler(struct pt_regs *regs); #else diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h index 9b419f0de7..26b628d845 100644 --- a/arch/x86/include/asm/kvm-x86-ops.h +++ b/arch/x86/include/asm/kvm-x86-ops.h @@ -127,7 +127,7 @@ KVM_X86_OP_OPTIONAL(vm_copy_enc_context_from) KVM_X86_OP_OPTIONAL(vm_move_enc_context_from) KVM_X86_OP_OPTIONAL(guest_memory_reclaimed) KVM_X86_OP(get_msr_feature) -KVM_X86_OP(can_emulate_instruction) +KVM_X86_OP(check_emulate_instruction) KVM_X86_OP(apic_init_signal_blocked) KVM_X86_OP_OPTIONAL(enable_l2_tlb_flush) KVM_X86_OP_OPTIONAL(migrate_timers) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index fb9f5fa96c..d703698233 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -39,7 +39,15 @@ #define __KVM_HAVE_ARCH_VCPU_DEBUGFS +/* + * CONFIG_KVM_MAX_NR_VCPUS is defined iff CONFIG_KVM!=n, provide a dummy max if + * KVM is disabled (arbitrarily use the default from CONFIG_KVM_MAX_NR_VCPUS). + */ +#ifdef CONFIG_KVM_MAX_NR_VCPUS +#define KVM_MAX_VCPUS CONFIG_KVM_MAX_NR_VCPUS +#else #define KVM_MAX_VCPUS 1024 +#endif /* * In x86, the VCPU ID corresponds to the APIC ID, and APIC IDs @@ -679,6 +687,7 @@ struct kvm_hypervisor_cpuid { u32 limit; }; +#ifdef CONFIG_KVM_XEN /* Xen HVM per vcpu emulation context */ struct kvm_vcpu_xen { u64 hypercall_rip; @@ -701,6 +710,7 @@ struct kvm_vcpu_xen { struct timer_list poll_timer; struct kvm_hypervisor_cpuid cpuid; }; +#endif struct kvm_queued_exception { bool pending; @@ -929,8 +939,9 @@ struct kvm_vcpu_arch { bool hyperv_enabled; struct kvm_vcpu_hv *hyperv; +#ifdef CONFIG_KVM_XEN struct kvm_vcpu_xen xen; - +#endif cpumask_var_t wbinvd_dirty_mask; unsigned long last_retry_eip; @@ -1275,7 +1286,6 @@ struct kvm_arch { */ spinlock_t mmu_unsync_pages_lock; - struct list_head assigned_dev_head; struct iommu_domain *iommu_domain; bool iommu_noncoherent; #define __KVM_HAVE_ARCH_NONCOHERENT_DMA @@ -1323,6 +1333,7 @@ struct kvm_arch { int nr_vcpus_matched_tsc; u32 default_tsc_khz; + bool user_set_tsc; seqcount_raw_spinlock_t pvclock_sc; bool use_master_clock; @@ -1691,7 +1702,7 @@ struct kvm_x86_ops { void (*request_immediate_exit)(struct kvm_vcpu *vcpu); - void (*sched_in)(struct kvm_vcpu *kvm, int cpu); + void (*sched_in)(struct kvm_vcpu *vcpu, int cpu); /* * Size of the CPU's dirty log buffer, i.e. VMX's PML buffer. A zero @@ -1734,8 +1745,8 @@ struct kvm_x86_ops { int (*get_msr_feature)(struct kvm_msr_entry *entry); - bool (*can_emulate_instruction)(struct kvm_vcpu *vcpu, int emul_type, - void *insn, int insn_len); + int (*check_emulate_instruction)(struct kvm_vcpu *vcpu, int emul_type, + void *insn, int insn_len); bool (*apic_init_signal_blocked)(struct kvm_vcpu *vcpu); int (*enable_l2_tlb_flush)(struct kvm_vcpu *vcpu); diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h index 635132a127..73dba8b944 100644 --- a/arch/x86/include/asm/local.h +++ b/arch/x86/include/asm/local.h @@ -135,28 +135,27 @@ static inline bool local_try_cmpxchg(local_t *l, long *old, long new) #define local_xchg(l, n) (xchg(&((l)->a.counter), (n))) /** - * local_add_unless - add unless the number is a given value + * local_add_unless - add unless the number is already a given value * @l: pointer of type local_t * @a: the amount to add to l... * @u: ...unless l is equal to u. * - * Atomically adds @a to @l, so long as it was not @u. - * Returns non-zero if @l was not @u, and zero otherwise. + * Atomically adds @a to @l, if @v was not already @u. + * Returns true if the addition was done. */ -#define local_add_unless(l, a, u) \ -({ \ - long c, old; \ - c = local_read((l)); \ - for (;;) { \ - if (unlikely(c == (u))) \ - break; \ - old = local_cmpxchg((l), c, c + (a)); \ - if (likely(old == c)) \ - break; \ - c = old; \ - } \ - c != (u); \ -}) +static __always_inline bool +local_add_unless(local_t *l, long a, long u) +{ + long c = local_read(l); + + do { + if (unlikely(c == u)) + return false; + } while (!local_try_cmpxchg(l, &c, c + a)); + + return true; +} + #define local_inc_not_zero(l) local_add_unless((l), 1, 0) /* On x86_32, these are no better than the atomic variants. diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h index 180b1cbfcc..6de6e1d959 100644 --- a/arch/x86/include/asm/mce.h +++ b/arch/x86/include/asm/mce.h @@ -245,7 +245,7 @@ static inline void cmci_recheck(void) {} int mce_available(struct cpuinfo_x86 *c); bool mce_is_memory_error(struct mce *m); bool mce_is_correctable(struct mce *m); -int mce_usable_address(struct mce *m); +bool mce_usable_address(struct mce *m); DECLARE_PER_CPU(unsigned, mce_exception_count); DECLARE_PER_CPU(unsigned, mce_poll_count); diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h index 473b16d73b..359ada486f 100644 --- a/arch/x86/include/asm/mem_encrypt.h +++ b/arch/x86/include/asm/mem_encrypt.h @@ -19,8 +19,10 @@ #ifdef CONFIG_X86_MEM_ENCRYPT void __init mem_encrypt_init(void); +void __init mem_encrypt_setup_arch(void); #else static inline void mem_encrypt_init(void) { } +static inline void __init mem_encrypt_setup_arch(void) { } #endif #ifdef CONFIG_AMD_MEM_ENCRYPT @@ -43,7 +45,6 @@ void __init sme_map_bootdata(char *real_mode_data); void __init sme_unmap_bootdata(char *real_mode_data); void __init sme_early_init(void); -void __init sev_setup_arch(void); void __init sme_encrypt_kernel(struct boot_params *bp); void __init sme_enable(struct boot_params *bp); @@ -73,7 +74,6 @@ static inline void __init sme_map_bootdata(char *real_mode_data) { } static inline void __init sme_unmap_bootdata(char *real_mode_data) { } static inline void __init sme_early_init(void) { } -static inline void __init sev_setup_arch(void) { } static inline void __init sme_encrypt_kernel(struct boot_params *bp) { } static inline void __init sme_enable(struct boot_params *bp) { } diff --git a/arch/x86/include/asm/microcode.h b/arch/x86/include/asm/microcode.h index bbbe9d7449..695e569159 100644 --- a/arch/x86/include/asm/microcode.h +++ b/arch/x86/include/asm/microcode.h @@ -23,6 +23,8 @@ static inline void load_ucode_ap(void) { } static inline void microcode_bsp_resume(void) { } #endif +extern unsigned long initrd_start_early; + #ifdef CONFIG_CPU_SUP_INTEL /* Intel specific microcode defines. Public for IFS */ struct microcode_header_intel { @@ -36,7 +38,8 @@ struct microcode_header_intel { unsigned int datasize; unsigned int totalsize; unsigned int metasize; - unsigned int reserved[2]; + unsigned int min_req_ver; + unsigned int reserved; }; struct microcode_intel { @@ -68,11 +71,19 @@ static inline u32 intel_get_microcode_revision(void) return rev; } +#endif /* !CONFIG_CPU_SUP_INTEL */ -void show_ucode_info_early(void); +bool microcode_nmi_handler(void); +void microcode_offline_nmi_handler(void); -#else /* CONFIG_CPU_SUP_INTEL */ -static inline void show_ucode_info_early(void) { } -#endif /* !CONFIG_CPU_SUP_INTEL */ +#ifdef CONFIG_MICROCODE_LATE_LOADING +DECLARE_STATIC_KEY_FALSE(microcode_nmi_handler_enable); +static __always_inline bool microcode_nmi_handler_enabled(void) +{ + return static_branch_unlikely(µcode_nmi_handler_enable); +} +#else +static __always_inline bool microcode_nmi_handler_enabled(void) { return false; } +#endif #endif /* _ASM_X86_MICROCODE_H */ diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h index f46df8349e..4b0f98a8d3 100644 --- a/arch/x86/include/asm/mpspec.h +++ b/arch/x86/include/asm/mpspec.h @@ -37,7 +37,7 @@ extern int mp_bus_id_to_type[MAX_MP_BUSSES]; extern DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES); -extern unsigned int boot_cpu_physical_apicid; +extern u32 boot_cpu_physical_apicid; extern u8 boot_cpu_apic_version; #ifdef CONFIG_X86_LOCAL_APIC diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index 896445edc6..ce4ce8720d 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -276,11 +276,11 @@ int hv_unmap_ioapic_interrupt(int ioapic_id, struct hv_interrupt_entry *entry); #ifdef CONFIG_AMD_MEM_ENCRYPT bool hv_ghcb_negotiate_protocol(void); void __noreturn hv_ghcb_terminate(unsigned int set, unsigned int reason); -int hv_snp_boot_ap(int cpu, unsigned long start_ip); +int hv_snp_boot_ap(u32 cpu, unsigned long start_ip); #else static inline bool hv_ghcb_negotiate_protocol(void) { return false; } static inline void hv_ghcb_terminate(unsigned int set, unsigned int reason) {} -static inline int hv_snp_boot_ap(int cpu, unsigned long start_ip) { return 0; } +static inline int hv_snp_boot_ap(u32 cpu, unsigned long start_ip) { return 0; } #endif #if defined(CONFIG_AMD_MEM_ENCRYPT) || defined(CONFIG_INTEL_TDX_GUEST) diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index 389f959474..1d51e1850e 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -222,6 +222,7 @@ #define MSR_INTEGRITY_CAPS_ARRAY_BIST BIT(MSR_INTEGRITY_CAPS_ARRAY_BIST_BIT) #define MSR_INTEGRITY_CAPS_PERIODIC_BIST_BIT 4 #define MSR_INTEGRITY_CAPS_PERIODIC_BIST BIT(MSR_INTEGRITY_CAPS_PERIODIC_BIST_BIT) +#define MSR_INTEGRITY_CAPS_SAF_GEN_MASK GENMASK_ULL(10, 9) #define MSR_LBR_NHM_FROM 0x00000680 #define MSR_LBR_NHM_TO 0x000006c0 @@ -639,12 +640,16 @@ #define MSR_AMD64_LBR_SELECT 0xc000010e /* Zen4 */ -#define MSR_ZEN4_BP_CFG 0xc001102e +#define MSR_ZEN4_BP_CFG 0xc001102e #define MSR_ZEN4_BP_CFG_SHARED_BTB_FIX_BIT 5 +/* Fam 19h MSRs */ +#define MSR_F19H_UMC_PERF_CTL 0xc0010800 +#define MSR_F19H_UMC_PERF_CTR 0xc0010801 + /* Zen 2 */ -#define MSR_ZEN2_SPECTRAL_CHICKEN 0xc00110e3 -#define MSR_ZEN2_SPECTRAL_CHICKEN_BIT BIT_ULL(1) +#define MSR_ZEN2_SPECTRAL_CHICKEN 0xc00110e3 +#define MSR_ZEN2_SPECTRAL_CHICKEN_BIT BIT_ULL(1) /* Fam 17h MSRs */ #define MSR_F17H_IRPERF 0xc00000e9 @@ -1118,12 +1123,16 @@ #define MSR_IA32_VMX_MISC_INTEL_PT (1ULL << 14) #define MSR_IA32_VMX_MISC_VMWRITE_SHADOW_RO_FIELDS (1ULL << 29) #define MSR_IA32_VMX_MISC_PREEMPTION_TIMER_SCALE 0x1F -/* AMD-V MSRs */ +/* AMD-V MSRs */ #define MSR_VM_CR 0xc0010114 #define MSR_VM_IGNNE 0xc0010115 #define MSR_VM_HSAVE_PA 0xc0010117 +#define SVM_VM_CR_VALID_MASK 0x001fULL +#define SVM_VM_CR_SVM_LOCK_MASK 0x0008ULL +#define SVM_VM_CR_SVM_DIS_MASK 0x0010ULL + /* Hardware Feedback Interface */ #define MSR_IA32_HW_FEEDBACK_PTR 0x17d0 #define MSR_IA32_HW_FEEDBACK_CONFIG 0x17d1 diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h index 0396458c20..2519615936 100644 --- a/arch/x86/include/asm/nospec-branch.h +++ b/arch/x86/include/asm/nospec-branch.h @@ -288,38 +288,24 @@ * As such, this must be placed after every *SWITCH_TO_KERNEL_CR3 at a point * where we have a stack but before any RET instruction. */ -.macro UNTRAIN_RET -#if defined(CONFIG_CPU_UNRET_ENTRY) || defined(CONFIG_CPU_IBPB_ENTRY) || \ - defined(CONFIG_CALL_DEPTH_TRACKING) || defined(CONFIG_CPU_SRSO) +.macro __UNTRAIN_RET ibpb_feature, call_depth_insns +#if defined(CONFIG_RETHUNK) || defined(CONFIG_CPU_IBPB_ENTRY) VALIDATE_UNRET_END ALTERNATIVE_3 "", \ CALL_UNTRAIN_RET, X86_FEATURE_UNRET, \ - "call entry_ibpb", X86_FEATURE_ENTRY_IBPB, \ - __stringify(RESET_CALL_DEPTH), X86_FEATURE_CALL_DEPTH + "call entry_ibpb", \ibpb_feature, \ + __stringify(\call_depth_insns), X86_FEATURE_CALL_DEPTH #endif .endm -.macro UNTRAIN_RET_VM -#if defined(CONFIG_CPU_UNRET_ENTRY) || defined(CONFIG_CPU_IBPB_ENTRY) || \ - defined(CONFIG_CALL_DEPTH_TRACKING) || defined(CONFIG_CPU_SRSO) - VALIDATE_UNRET_END - ALTERNATIVE_3 "", \ - CALL_UNTRAIN_RET, X86_FEATURE_UNRET, \ - "call entry_ibpb", X86_FEATURE_IBPB_ON_VMEXIT, \ - __stringify(RESET_CALL_DEPTH), X86_FEATURE_CALL_DEPTH -#endif -.endm +#define UNTRAIN_RET \ + __UNTRAIN_RET X86_FEATURE_ENTRY_IBPB, __stringify(RESET_CALL_DEPTH) -.macro UNTRAIN_RET_FROM_CALL -#if defined(CONFIG_CPU_UNRET_ENTRY) || defined(CONFIG_CPU_IBPB_ENTRY) || \ - defined(CONFIG_CALL_DEPTH_TRACKING) || defined(CONFIG_CPU_SRSO) - VALIDATE_UNRET_END - ALTERNATIVE_3 "", \ - CALL_UNTRAIN_RET, X86_FEATURE_UNRET, \ - "call entry_ibpb", X86_FEATURE_ENTRY_IBPB, \ - __stringify(RESET_CALL_DEPTH_FROM_CALL), X86_FEATURE_CALL_DEPTH -#endif -.endm +#define UNTRAIN_RET_VM \ + __UNTRAIN_RET X86_FEATURE_IBPB_ON_VMEXIT, __stringify(RESET_CALL_DEPTH) + +#define UNTRAIN_RET_FROM_CALL \ + __UNTRAIN_RET X86_FEATURE_ENTRY_IBPB, __stringify(RESET_CALL_DEPTH_FROM_CALL) .macro CALL_DEPTH_ACCOUNT @@ -329,6 +315,17 @@ #endif .endm +/* + * Macro to execute VERW instruction that mitigate transient data sampling + * attacks such as MDS. On affected systems a microcode update overloaded VERW + * instruction to also clear the CPU buffers. VERW clobbers CFLAGS.ZF. + * + * Note: Only the memory operand variant of VERW clears the CPU buffers. + */ +.macro CLEAR_CPU_BUFFERS + ALTERNATIVE "", __stringify(verw _ASM_RIP(mds_verw_sel)), X86_FEATURE_CLEAR_CPU_BUF +.endm + #else /* __ASSEMBLY__ */ #define ANNOTATE_RETPOLINE_SAFE \ @@ -348,13 +345,23 @@ extern void __x86_return_thunk(void); static inline void __x86_return_thunk(void) {} #endif +#ifdef CONFIG_CPU_UNRET_ENTRY extern void retbleed_return_thunk(void); +#else +static inline void retbleed_return_thunk(void) {} +#endif + +#ifdef CONFIG_CPU_SRSO extern void srso_return_thunk(void); extern void srso_alias_return_thunk(void); +#else +static inline void srso_return_thunk(void) {} +static inline void srso_alias_return_thunk(void) {} +#endif -extern void retbleed_untrain_ret(void); -extern void srso_untrain_ret(void); -extern void srso_alias_untrain_ret(void); +extern void retbleed_return_thunk(void); +extern void srso_return_thunk(void); +extern void srso_alias_return_thunk(void); extern void entry_untrain_ret(void); extern void entry_ibpb(void); @@ -362,12 +369,7 @@ extern void entry_ibpb(void); extern void (*x86_return_thunk)(void); #ifdef CONFIG_CALL_DEPTH_TRACKING -extern void __x86_return_skl(void); - -static inline void x86_set_skl_return_thunk(void) -{ - x86_return_thunk = &__x86_return_skl; -} +extern void call_depth_return_thunk(void); #define CALL_DEPTH_ACCOUNT \ ALTERNATIVE("", \ @@ -380,12 +382,12 @@ DECLARE_PER_CPU(u64, __x86_ret_count); DECLARE_PER_CPU(u64, __x86_stuffs_count); DECLARE_PER_CPU(u64, __x86_ctxsw_count); #endif -#else -static inline void x86_set_skl_return_thunk(void) {} +#else /* !CONFIG_CALL_DEPTH_TRACKING */ +static inline void call_depth_return_thunk(void) {} #define CALL_DEPTH_ACCOUNT "" -#endif +#endif /* CONFIG_CALL_DEPTH_TRACKING */ #ifdef CONFIG_RETPOLINE @@ -545,6 +547,8 @@ DECLARE_STATIC_KEY_FALSE(switch_mm_cond_l1d_flush); DECLARE_STATIC_KEY_FALSE(mmio_stale_data_clear); +extern u16 mds_verw_sel; + #include <asm/segment.h> /** diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h index 34734d7304..20624b80f8 100644 --- a/arch/x86/include/asm/percpu.h +++ b/arch/x86/include/asm/percpu.h @@ -210,6 +210,25 @@ do { \ (typeof(_var))(unsigned long) pco_old__; \ }) +#define percpu_try_cmpxchg_op(size, qual, _var, _ovalp, _nval) \ +({ \ + bool success; \ + __pcpu_type_##size *pco_oval__ = (__pcpu_type_##size *)(_ovalp); \ + __pcpu_type_##size pco_old__ = *pco_oval__; \ + __pcpu_type_##size pco_new__ = __pcpu_cast_##size(_nval); \ + asm qual (__pcpu_op2_##size("cmpxchg", "%[nval]", \ + __percpu_arg([var])) \ + CC_SET(z) \ + : CC_OUT(z) (success), \ + [oval] "+a" (pco_old__), \ + [var] "+m" (_var) \ + : [nval] __pcpu_reg_##size(, pco_new__) \ + : "memory"); \ + if (unlikely(!success)) \ + *pco_oval__ = pco_old__; \ + likely(success); \ +}) + #if defined(CONFIG_X86_32) && !defined(CONFIG_UML) #define percpu_cmpxchg64_op(size, qual, _var, _oval, _nval) \ ({ \ @@ -223,26 +242,63 @@ do { \ old__.var = _oval; \ new__.var = _nval; \ \ - asm qual (ALTERNATIVE("leal %P[var], %%esi; call this_cpu_cmpxchg8b_emu", \ + asm qual (ALTERNATIVE("call this_cpu_cmpxchg8b_emu", \ "cmpxchg8b " __percpu_arg([var]), X86_FEATURE_CX8) \ : [var] "+m" (_var), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ - "c" (new__.high) \ - : "memory", "esi"); \ + "c" (new__.high), \ + "S" (&(_var)) \ + : "memory"); \ \ old__.var; \ }) #define raw_cpu_cmpxchg64(pcp, oval, nval) percpu_cmpxchg64_op(8, , pcp, oval, nval) #define this_cpu_cmpxchg64(pcp, oval, nval) percpu_cmpxchg64_op(8, volatile, pcp, oval, nval) + +#define percpu_try_cmpxchg64_op(size, qual, _var, _ovalp, _nval) \ +({ \ + bool success; \ + u64 *_oval = (u64 *)(_ovalp); \ + union { \ + u64 var; \ + struct { \ + u32 low, high; \ + }; \ + } old__, new__; \ + \ + old__.var = *_oval; \ + new__.var = _nval; \ + \ + asm qual (ALTERNATIVE("call this_cpu_cmpxchg8b_emu", \ + "cmpxchg8b " __percpu_arg([var]), X86_FEATURE_CX8) \ + CC_SET(z) \ + : CC_OUT(z) (success), \ + [var] "+m" (_var), \ + "+a" (old__.low), \ + "+d" (old__.high) \ + : "b" (new__.low), \ + "c" (new__.high), \ + "S" (&(_var)) \ + : "memory"); \ + if (unlikely(!success)) \ + *_oval = old__.var; \ + likely(success); \ +}) + +#define raw_cpu_try_cmpxchg64(pcp, ovalp, nval) percpu_try_cmpxchg64_op(8, , pcp, ovalp, nval) +#define this_cpu_try_cmpxchg64(pcp, ovalp, nval) percpu_try_cmpxchg64_op(8, volatile, pcp, ovalp, nval) #endif #ifdef CONFIG_X86_64 #define raw_cpu_cmpxchg64(pcp, oval, nval) percpu_cmpxchg_op(8, , pcp, oval, nval); #define this_cpu_cmpxchg64(pcp, oval, nval) percpu_cmpxchg_op(8, volatile, pcp, oval, nval); +#define raw_cpu_try_cmpxchg64(pcp, ovalp, nval) percpu_try_cmpxchg_op(8, , pcp, ovalp, nval); +#define this_cpu_try_cmpxchg64(pcp, ovalp, nval) percpu_try_cmpxchg_op(8, volatile, pcp, ovalp, nval); + #define percpu_cmpxchg128_op(size, qual, _var, _oval, _nval) \ ({ \ union { \ @@ -255,20 +311,54 @@ do { \ old__.var = _oval; \ new__.var = _nval; \ \ - asm qual (ALTERNATIVE("leaq %P[var], %%rsi; call this_cpu_cmpxchg16b_emu", \ + asm qual (ALTERNATIVE("call this_cpu_cmpxchg16b_emu", \ "cmpxchg16b " __percpu_arg([var]), X86_FEATURE_CX16) \ : [var] "+m" (_var), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ - "c" (new__.high) \ - : "memory", "rsi"); \ + "c" (new__.high), \ + "S" (&(_var)) \ + : "memory"); \ \ old__.var; \ }) #define raw_cpu_cmpxchg128(pcp, oval, nval) percpu_cmpxchg128_op(16, , pcp, oval, nval) #define this_cpu_cmpxchg128(pcp, oval, nval) percpu_cmpxchg128_op(16, volatile, pcp, oval, nval) + +#define percpu_try_cmpxchg128_op(size, qual, _var, _ovalp, _nval) \ +({ \ + bool success; \ + u128 *_oval = (u128 *)(_ovalp); \ + union { \ + u128 var; \ + struct { \ + u64 low, high; \ + }; \ + } old__, new__; \ + \ + old__.var = *_oval; \ + new__.var = _nval; \ + \ + asm qual (ALTERNATIVE("call this_cpu_cmpxchg16b_emu", \ + "cmpxchg16b " __percpu_arg([var]), X86_FEATURE_CX16) \ + CC_SET(z) \ + : CC_OUT(z) (success), \ + [var] "+m" (_var), \ + "+a" (old__.low), \ + "+d" (old__.high) \ + : "b" (new__.low), \ + "c" (new__.high), \ + "S" (&(_var)) \ + : "memory"); \ + if (unlikely(!success)) \ + *_oval = old__.var; \ + likely(success); \ +}) + +#define raw_cpu_try_cmpxchg128(pcp, ovalp, nval) percpu_try_cmpxchg128_op(16, , pcp, ovalp, nval) +#define this_cpu_try_cmpxchg128(pcp, ovalp, nval) percpu_try_cmpxchg128_op(16, volatile, pcp, ovalp, nval) #endif /* @@ -343,6 +433,9 @@ do { \ #define raw_cpu_cmpxchg_1(pcp, oval, nval) percpu_cmpxchg_op(1, , pcp, oval, nval) #define raw_cpu_cmpxchg_2(pcp, oval, nval) percpu_cmpxchg_op(2, , pcp, oval, nval) #define raw_cpu_cmpxchg_4(pcp, oval, nval) percpu_cmpxchg_op(4, , pcp, oval, nval) +#define raw_cpu_try_cmpxchg_1(pcp, ovalp, nval) percpu_try_cmpxchg_op(1, , pcp, ovalp, nval) +#define raw_cpu_try_cmpxchg_2(pcp, ovalp, nval) percpu_try_cmpxchg_op(2, , pcp, ovalp, nval) +#define raw_cpu_try_cmpxchg_4(pcp, ovalp, nval) percpu_try_cmpxchg_op(4, , pcp, ovalp, nval) #define this_cpu_add_return_1(pcp, val) percpu_add_return_op(1, volatile, pcp, val) #define this_cpu_add_return_2(pcp, val) percpu_add_return_op(2, volatile, pcp, val) @@ -350,6 +443,9 @@ do { \ #define this_cpu_cmpxchg_1(pcp, oval, nval) percpu_cmpxchg_op(1, volatile, pcp, oval, nval) #define this_cpu_cmpxchg_2(pcp, oval, nval) percpu_cmpxchg_op(2, volatile, pcp, oval, nval) #define this_cpu_cmpxchg_4(pcp, oval, nval) percpu_cmpxchg_op(4, volatile, pcp, oval, nval) +#define this_cpu_try_cmpxchg_1(pcp, ovalp, nval) percpu_try_cmpxchg_op(1, volatile, pcp, ovalp, nval) +#define this_cpu_try_cmpxchg_2(pcp, ovalp, nval) percpu_try_cmpxchg_op(2, volatile, pcp, ovalp, nval) +#define this_cpu_try_cmpxchg_4(pcp, ovalp, nval) percpu_try_cmpxchg_op(4, volatile, pcp, ovalp, nval) /* * Per cpu atomic 64 bit operations are only available under 64 bit. @@ -364,6 +460,7 @@ do { \ #define raw_cpu_add_return_8(pcp, val) percpu_add_return_op(8, , pcp, val) #define raw_cpu_xchg_8(pcp, nval) raw_percpu_xchg_op(pcp, nval) #define raw_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(8, , pcp, oval, nval) +#define raw_cpu_try_cmpxchg_8(pcp, ovalp, nval) percpu_try_cmpxchg_op(8, , pcp, ovalp, nval) #define this_cpu_read_8(pcp) percpu_from_op(8, volatile, "mov", pcp) #define this_cpu_write_8(pcp, val) percpu_to_op(8, volatile, "mov", (pcp), val) @@ -373,6 +470,7 @@ do { \ #define this_cpu_add_return_8(pcp, val) percpu_add_return_op(8, volatile, pcp, val) #define this_cpu_xchg_8(pcp, nval) percpu_xchg_op(8, volatile, pcp, nval) #define this_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(8, volatile, pcp, oval, nval) +#define this_cpu_try_cmpxchg_8(pcp, ovalp, nval) percpu_try_cmpxchg_op(8, volatile, pcp, ovalp, nval) #endif static __always_inline bool x86_this_cpu_constant_test_bit(unsigned int nr, diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h index 85a9fd5a3e..2618ec7c3d 100644 --- a/arch/x86/include/asm/perf_event.h +++ b/arch/x86/include/asm/perf_event.h @@ -112,6 +112,13 @@ (AMD64_PERFMON_V2_EVENTSEL_EVENT_NB | \ AMD64_PERFMON_V2_EVENTSEL_UMASK_NB) +#define AMD64_PERFMON_V2_ENABLE_UMC BIT_ULL(31) +#define AMD64_PERFMON_V2_EVENTSEL_EVENT_UMC GENMASK_ULL(7, 0) +#define AMD64_PERFMON_V2_EVENTSEL_RDWRMASK_UMC GENMASK_ULL(9, 8) +#define AMD64_PERFMON_V2_RAW_EVENT_MASK_UMC \ + (AMD64_PERFMON_V2_EVENTSEL_EVENT_UMC | \ + AMD64_PERFMON_V2_EVENTSEL_RDWRMASK_UMC) + #define AMD64_NUM_COUNTERS 4 #define AMD64_NUM_COUNTERS_CORE 6 #define AMD64_NUM_COUNTERS_NB 4 @@ -232,6 +239,8 @@ union cpuid_0x80000022_ebx { unsigned int lbr_v2_stack_sz:6; /* Number of Data Fabric Counters */ unsigned int num_df_pmc:6; + /* Number of Unified Memory Controller Counters */ + unsigned int num_umc_pmc:6; } split; unsigned int full; }; diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index e02b179ec6..57bab91bbf 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -1716,6 +1716,14 @@ static inline bool pud_user_accessible_page(pud_t pud) } #endif +#ifdef CONFIG_X86_SGX +int arch_memory_failure(unsigned long pfn, int flags); +#define arch_memory_failure arch_memory_failure + +bool arch_is_platform_page(u64 paddr); +#define arch_is_platform_page arch_is_platform_page +#endif + #endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_PGTABLE_H */ diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h index 2d13f25b1b..4527e1430c 100644 --- a/arch/x86/include/asm/preempt.h +++ b/arch/x86/include/asm/preempt.h @@ -31,11 +31,11 @@ static __always_inline void preempt_count_set(int pc) { int old, new; + old = raw_cpu_read_4(pcpu_hot.preempt_count); do { - old = raw_cpu_read_4(pcpu_hot.preempt_count); new = (old & PREEMPT_NEED_RESCHED) | (pc & ~PREEMPT_NEED_RESCHED); - } while (raw_cpu_cmpxchg_4(pcpu_hot.preempt_count, old, new) != old); + } while (!raw_cpu_try_cmpxchg_4(pcpu_hot.preempt_count, &old, new)); } /* diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index a3669a7774..26620d7642 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -75,11 +75,36 @@ extern u16 __read_mostly tlb_lld_4m[NR_INFO]; extern u16 __read_mostly tlb_lld_1g[NR_INFO]; /* - * CPU type and hardware bug flags. Kept separately for each CPU. - * Members of this structure are referenced in head_32.S, so think twice - * before touching them. [mj] + * CPU type and hardware bug flags. Kept separately for each CPU. */ +struct cpuinfo_topology { + // Real APIC ID read from the local APIC + u32 apicid; + // The initial APIC ID provided by CPUID + u32 initial_apicid; + + // Physical package ID + u32 pkg_id; + + // Physical die ID on AMD, Relative on Intel + u32 die_id; + + // Compute unit ID - AMD specific + u32 cu_id; + + // Core ID relative to the package + u32 core_id; + + // Logical ID mappings + u32 logical_pkg_id; + u32 logical_die_id; + + // Cache level topology IDs + u32 llc_id; + u32 l2c_id; +}; + struct cpuinfo_x86 { __u8 x86; /* CPU family */ __u8 x86_vendor; /* CPU vendor */ @@ -96,7 +121,6 @@ struct cpuinfo_x86 { __u8 x86_phys_bits; /* CPUID returned core id bits: */ __u8 x86_coreid_bits; - __u8 cu_id; /* Max extended CPUID function supported: */ __u32 extended_cpuid_level; /* Maximum supported CPUID level, -1=no CPUID: */ @@ -112,6 +136,7 @@ struct cpuinfo_x86 { }; char x86_vendor_id[16]; char x86_model_id[64]; + struct cpuinfo_topology topo; /* in KB - valid for CPUS which support this call: */ unsigned int x86_cache_size; int x86_cache_alignment; /* In bytes */ @@ -125,19 +150,9 @@ struct cpuinfo_x86 { u64 ppin; /* cpuid returned max cores value: */ u16 x86_max_cores; - u16 apicid; - u16 initial_apicid; u16 x86_clflush_size; /* number of cores as seen by the OS: */ u16 booted_cores; - /* Physical processor id: */ - u16 phys_proc_id; - /* Logical processor id: */ - u16 logical_proc_id; - /* Core id: */ - u16 cpu_core_id; - u16 cpu_die_id; - u16 logical_die_id; /* Index into per_cpu list: */ u16 cpu_index; /* Is SMT active on this core? */ @@ -399,7 +414,7 @@ static inline unsigned long cpu_kernelmode_gs_base(int cpu) return (unsigned long)per_cpu(fixed_percpu_data.gs_base, cpu); } -extern asmlinkage void ignore_sysret(void); +extern asmlinkage void entry_SYSCALL32_ignore(void); /* Save actual FS/GS selectors and bases to current->thread */ void current_save_fsgs(void); @@ -678,7 +693,15 @@ extern int set_tsc_mode(unsigned int val); DECLARE_PER_CPU(u64, msr_misc_features_shadow); -extern u16 get_llc_id(unsigned int cpu); +static inline u32 per_cpu_llc_id(unsigned int cpu) +{ + return per_cpu(cpu_info.topo.llc_id, cpu); +} + +static inline u32 per_cpu_l2c_id(unsigned int cpu) +{ + return per_cpu(cpu_info.topo.l2c_id, cpu); +} #ifdef CONFIG_CPU_SUP_AMD extern u32 amd_get_nodes_per_socket(void); @@ -724,14 +747,24 @@ enum mds_mitigations { MDS_MITIGATION_VMWERV, }; -#ifdef CONFIG_X86_SGX -int arch_memory_failure(unsigned long pfn, int flags); -#define arch_memory_failure arch_memory_failure - -bool arch_is_platform_page(u64 paddr); -#define arch_is_platform_page arch_is_platform_page -#endif - extern bool gds_ucode_mitigated(void); +/* + * Make previous memory operations globally visible before + * a WRMSR. + * + * MFENCE makes writes visible, but only affects load/store + * instructions. WRMSR is unfortunately not a load/store + * instruction and is unaffected by MFENCE. The LFENCE ensures + * that the WRMSR is not reordered. + * + * Most WRMSRs are full serializing instructions themselves and + * do not require this barrier. This is only required for the + * IA32_TSC_DEADLINE and X2APIC MSRs. + */ +static inline void weak_wrmsr_fence(void) +{ + alternative("mfence; lfence", "", ALT_NOT(X86_FEATURE_APIC_MSRS_FENCE)); +} + #endif /* _ASM_X86_PROCESSOR_H */ diff --git a/arch/x86/include/asm/prom.h b/arch/x86/include/asm/prom.h index b716d291d0..65dee24206 100644 --- a/arch/x86/include/asm/prom.h +++ b/arch/x86/include/asm/prom.h @@ -31,6 +31,11 @@ static inline void x86_dtb_init(void) { } #define of_ioapic 0 #endif +#ifdef CONFIG_OF_EARLY_FLATTREE +void x86_flattree_get_config(void); +#else +static inline void x86_flattree_get_config(void) { } +#endif extern char cmd_line[COMMAND_LINE_SIZE]; #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/include/asm/proto.h b/arch/x86/include/asm/proto.h index 84294b66b9..484f4f0131 100644 --- a/arch/x86/include/asm/proto.h +++ b/arch/x86/include/asm/proto.h @@ -32,6 +32,9 @@ void entry_SYSCALL_compat(void); void entry_SYSCALL_compat_safe_stack(void); void entry_SYSRETL_compat_unsafe_stack(void); void entry_SYSRETL_compat_end(void); +#else /* !CONFIG_IA32_EMULATION */ +#define entry_SYSCALL_compat NULL +#define entry_SYSENTER_compat NULL #endif void x86_configure_nx(void); diff --git a/arch/x86/include/asm/rmwcc.h b/arch/x86/include/asm/rmwcc.h index 4b081e0d33..363266cbca 100644 --- a/arch/x86/include/asm/rmwcc.h +++ b/arch/x86/include/asm/rmwcc.h @@ -13,7 +13,7 @@ #define __GEN_RMWcc(fullop, _var, cc, clobbers, ...) \ ({ \ bool c = false; \ - asm_volatile_goto (fullop "; j" #cc " %l[cc_label]" \ + asm goto (fullop "; j" #cc " %l[cc_label]" \ : : [var] "m" (_var), ## __VA_ARGS__ \ : clobbers : cc_label); \ if (0) { \ diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index f3495623ac..bf483fcb4e 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -126,6 +126,7 @@ void clear_bss(void); #ifdef __i386__ asmlinkage void __init __noreturn i386_start_kernel(void); +void __init mk_early_pgtbl_32(void); #else asmlinkage void __init __noreturn x86_64_start_kernel(char *real_mode); diff --git a/arch/x86/include/asm/shared/tdx.h b/arch/x86/include/asm/shared/tdx.h index 7513b3bb69..ccce7ebd86 100644 --- a/arch/x86/include/asm/shared/tdx.h +++ b/arch/x86/include/asm/shared/tdx.h @@ -11,45 +11,85 @@ #define TDX_IDENT "IntelTDX " /* TDX module Call Leaf IDs */ -#define TDX_GET_INFO 1 -#define TDX_GET_VEINFO 3 -#define TDX_GET_REPORT 4 -#define TDX_ACCEPT_PAGE 6 -#define TDX_WR 8 +#define TDG_VP_VMCALL 0 +#define TDG_VP_INFO 1 +#define TDG_VP_VEINFO_GET 3 +#define TDG_MR_REPORT 4 +#define TDG_MEM_PAGE_ACCEPT 6 +#define TDG_VM_WR 8 /* TDCS fields. To be used by TDG.VM.WR and TDG.VM.RD module calls */ #define TDCS_NOTIFY_ENABLES 0x9100000000000010 /* TDX hypercall Leaf IDs */ #define TDVMCALL_MAP_GPA 0x10001 +#define TDVMCALL_GET_QUOTE 0x10002 #define TDVMCALL_REPORT_FATAL_ERROR 0x10003 +#define TDVMCALL_STATUS_RETRY 1 + +/* + * Bitmasks of exposed registers (with VMM). + */ +#define TDX_RDX BIT(2) +#define TDX_RBX BIT(3) +#define TDX_RSI BIT(6) +#define TDX_RDI BIT(7) +#define TDX_R8 BIT(8) +#define TDX_R9 BIT(9) +#define TDX_R10 BIT(10) +#define TDX_R11 BIT(11) +#define TDX_R12 BIT(12) +#define TDX_R13 BIT(13) +#define TDX_R14 BIT(14) +#define TDX_R15 BIT(15) + +/* + * These registers are clobbered to hold arguments for each + * TDVMCALL. They are safe to expose to the VMM. + * Each bit in this mask represents a register ID. Bit field + * details can be found in TDX GHCI specification, section + * titled "TDCALL [TDG.VP.VMCALL] leaf". + */ +#define TDVMCALL_EXPOSE_REGS_MASK \ + (TDX_RDX | TDX_RBX | TDX_RSI | TDX_RDI | TDX_R8 | TDX_R9 | \ + TDX_R10 | TDX_R11 | TDX_R12 | TDX_R13 | TDX_R14 | TDX_R15) + #ifndef __ASSEMBLY__ +#include <linux/compiler_attributes.h> + /* - * Used in __tdx_hypercall() to pass down and get back registers' values of - * the TDCALL instruction when requesting services from the VMM. - * - * This is a software only structure and not part of the TDX module/VMM ABI. + * Used in __tdcall*() to gather the input/output registers' values of the + * TDCALL instruction when requesting services from the TDX module. This is a + * software only structure and not part of the TDX module/VMM ABI */ -struct tdx_hypercall_args { +struct tdx_module_args { + /* callee-clobbered */ + u64 rcx; + u64 rdx; u64 r8; u64 r9; + /* extra callee-clobbered */ u64 r10; u64 r11; + /* callee-saved + rdi/rsi */ u64 r12; u64 r13; u64 r14; u64 r15; + u64 rbx; u64 rdi; u64 rsi; - u64 rbx; - u64 rdx; }; +/* Used to communicate with the TDX module */ +u64 __tdcall(u64 fn, struct tdx_module_args *args); +u64 __tdcall_ret(u64 fn, struct tdx_module_args *args); +u64 __tdcall_saved_ret(u64 fn, struct tdx_module_args *args); + /* Used to request services from the VMM */ -u64 __tdx_hypercall(struct tdx_hypercall_args *args); -u64 __tdx_hypercall_ret(struct tdx_hypercall_args *args); +u64 __tdx_hypercall(struct tdx_module_args *args); /* * Wrapper for standard use of __tdx_hypercall with no output aside from @@ -57,7 +97,7 @@ u64 __tdx_hypercall_ret(struct tdx_hypercall_args *args); */ static inline u64 _tdx_hypercall(u64 fn, u64 r12, u64 r13, u64 r14, u64 r15) { - struct tdx_hypercall_args args = { + struct tdx_module_args args = { .r10 = TDX_HYPERCALL_STANDARD, .r11 = fn, .r12 = r12, @@ -71,25 +111,7 @@ static inline u64 _tdx_hypercall(u64 fn, u64 r12, u64 r13, u64 r14, u64 r15) /* Called from __tdx_hypercall() for unrecoverable failure */ -void __tdx_hypercall_failed(void); - -/* - * Used in __tdx_module_call() to gather the output registers' values of the - * TDCALL instruction when requesting services from the TDX module. This is a - * software only structure and not part of the TDX module/VMM ABI - */ -struct tdx_module_output { - u64 rcx; - u64 rdx; - u64 r8; - u64 r9; - u64 r10; - u64 r11; -}; - -/* Used to communicate with the TDX module */ -u64 __tdx_module_call(u64 fn, u64 rcx, u64 rdx, u64 r8, u64 r9, - struct tdx_module_output *out); +void __noreturn __tdx_hypercall_failed(void); bool tdx_accept_memory(phys_addr_t start, phys_addr_t end); diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index c31c633419..4fab2ed454 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -17,10 +17,8 @@ DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_die_map); /* cpus sharing the last level cache: */ DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map); DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_l2c_shared_map); -DECLARE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id); -DECLARE_PER_CPU_READ_MOSTLY(u16, cpu_l2c_id); -DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_cpu_to_apicid); +DECLARE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_apicid); DECLARE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid); struct task_struct; diff --git a/arch/x86/include/asm/spec-ctrl.h b/arch/x86/include/asm/spec-ctrl.h index cb0386fc4d..c648502e45 100644 --- a/arch/x86/include/asm/spec-ctrl.h +++ b/arch/x86/include/asm/spec-ctrl.h @@ -4,6 +4,7 @@ #include <linux/thread_info.h> #include <asm/nospec-branch.h> +#include <asm/msr.h> /* * On VMENTER we must preserve whatever view of the SPEC_CTRL MSR @@ -76,6 +77,16 @@ static inline u64 ssbd_tif_to_amd_ls_cfg(u64 tifn) return (tifn & _TIF_SSBD) ? x86_amd_ls_cfg_ssbd_mask : 0ULL; } +/* + * This can be used in noinstr functions & should only be called in bare + * metal context. + */ +static __always_inline void __update_spec_ctrl(u64 val) +{ + __this_cpu_write(x86_spec_ctrl_current, val); + native_wrmsrl(MSR_IA32_SPEC_CTRL, val); +} + #ifdef CONFIG_SMP extern void speculative_store_bypass_ht_init(void); #else diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h index d6cd9344f6..48f8dd47cf 100644 --- a/arch/x86/include/asm/special_insns.h +++ b/arch/x86/include/asm/special_insns.h @@ -205,7 +205,7 @@ static inline void clwb(volatile void *__p) #ifdef CONFIG_X86_USER_SHADOW_STACK static inline int write_user_shstk_64(u64 __user *addr, u64 val) { - asm_volatile_goto("1: wrussq %[val], (%[addr])\n" + asm goto("1: wrussq %[val], (%[addr])\n" _ASM_EXTABLE(1b, %l[fail]) :: [addr] "r" (addr), [val] "r" (val) :: fail); diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index 3ac0ffc4f3..87a7b917d3 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -229,10 +229,6 @@ struct __attribute__ ((__packed__)) vmcb_control_area { #define SVM_IOIO_SIZE_MASK (7 << SVM_IOIO_SIZE_SHIFT) #define SVM_IOIO_ASIZE_MASK (7 << SVM_IOIO_ASIZE_SHIFT) -#define SVM_VM_CR_VALID_MASK 0x001fULL -#define SVM_VM_CR_SVM_LOCK_MASK 0x0008ULL -#define SVM_VM_CR_SVM_DIS_MASK 0x0010ULL - #define SVM_NESTED_CTL_NP_ENABLE BIT(0) #define SVM_NESTED_CTL_SEV_ENABLE BIT(1) #define SVM_NESTED_CTL_SEV_ES_ENABLE BIT(2) @@ -572,8 +568,6 @@ struct vmcb { #define SVM_CPUID_FUNC 0x8000000a -#define SVM_VM_CR_SVM_DISABLE 4 - #define SVM_SELECTOR_S_SHIFT 4 #define SVM_SELECTOR_DPL_SHIFT 5 #define SVM_SELECTOR_P_SHIFT 7 diff --git a/arch/x86/include/asm/syscall.h b/arch/x86/include/asm/syscall.h index 4fb36fba4b..f44e2f9ab6 100644 --- a/arch/x86/include/asm/syscall.h +++ b/arch/x86/include/asm/syscall.h @@ -126,12 +126,12 @@ static inline int syscall_get_arch(struct task_struct *task) ? AUDIT_ARCH_I386 : AUDIT_ARCH_X86_64; } -void do_syscall_64(struct pt_regs *regs, int nr); +bool do_syscall_64(struct pt_regs *regs, int nr); #endif /* CONFIG_X86_32 */ void do_int80_syscall_32(struct pt_regs *regs); -long do_fast_syscall_32(struct pt_regs *regs); -long do_SYSENTER_32(struct pt_regs *regs); +bool do_fast_syscall_32(struct pt_regs *regs); +bool do_SYSENTER_32(struct pt_regs *regs); #endif /* _ASM_X86_SYSCALL_H */ diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h index 603e6d1e9d..f3d5305a60 100644 --- a/arch/x86/include/asm/tdx.h +++ b/arch/x86/include/asm/tdx.h @@ -8,6 +8,7 @@ #include <asm/errno.h> #include <asm/ptrace.h> +#include <asm/trapnr.h> #include <asm/shared/tdx.h> /* @@ -20,6 +21,9 @@ #define TDX_SW_ERROR (TDX_ERROR | GENMASK_ULL(47, 40)) #define TDX_SEAMCALL_VMFAILINVALID (TDX_SW_ERROR | _UL(0xFFFF0000)) +#define TDX_SEAMCALL_GP (TDX_SW_ERROR | X86_TRAP_GP) +#define TDX_SEAMCALL_UD (TDX_SW_ERROR | X86_TRAP_UD) + #ifndef __ASSEMBLY__ /* @@ -52,6 +56,8 @@ bool tdx_early_handle_ve(struct pt_regs *regs); int tdx_mcall_get_report0(u8 *reportdata, u8 *tdreport); +u64 tdx_hcall_get_quote(u8 *buf, size_t size); + #else static inline void tdx_early_init(void) { }; @@ -72,5 +78,12 @@ static inline long tdx_kvm_hypercall(unsigned int nr, unsigned long p1, return -ENODEV; } #endif /* CONFIG_INTEL_TDX_GUEST && CONFIG_KVM_GUEST */ + +#ifdef CONFIG_INTEL_TDX_HOST +u64 __seamcall(u64 fn, struct tdx_module_args *args); +u64 __seamcall_ret(u64 fn, struct tdx_module_args *args); +u64 __seamcall_saved_ret(u64 fn, struct tdx_module_args *args); +#endif /* CONFIG_INTEL_TDX_HOST */ + #endif /* !__ASSEMBLY__ */ #endif /* _ASM_X86_TDX_H */ diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index 3235ba1e5b..5f87f6b9b0 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -105,17 +105,17 @@ static inline void setup_node_to_cpumask_map(void) { } extern const struct cpumask *cpu_coregroup_mask(int cpu); extern const struct cpumask *cpu_clustergroup_mask(int cpu); -#define topology_logical_package_id(cpu) (cpu_data(cpu).logical_proc_id) -#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) -#define topology_logical_die_id(cpu) (cpu_data(cpu).logical_die_id) -#define topology_die_id(cpu) (cpu_data(cpu).cpu_die_id) -#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) +#define topology_logical_package_id(cpu) (cpu_data(cpu).topo.logical_pkg_id) +#define topology_physical_package_id(cpu) (cpu_data(cpu).topo.pkg_id) +#define topology_logical_die_id(cpu) (cpu_data(cpu).topo.logical_die_id) +#define topology_die_id(cpu) (cpu_data(cpu).topo.die_id) +#define topology_core_id(cpu) (cpu_data(cpu).topo.core_id) #define topology_ppin(cpu) (cpu_data(cpu).ppin) extern unsigned int __max_die_per_package; #ifdef CONFIG_SMP -#define topology_cluster_id(cpu) (per_cpu(cpu_l2c_id, cpu)) +#define topology_cluster_id(cpu) (cpu_data(cpu).topo.l2c_id) #define topology_die_cpumask(cpu) (per_cpu(cpu_die_map, cpu)) #define topology_cluster_cpumask(cpu) (cpu_clustergroup_mask(cpu)) #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index 5c367c1290..237dc8cdd1 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -133,7 +133,7 @@ extern int __get_user_bad(void); #ifdef CONFIG_X86_32 #define __put_user_goto_u64(x, addr, label) \ - asm_volatile_goto("\n" \ + asm goto("\n" \ "1: movl %%eax,0(%1)\n" \ "2: movl %%edx,4(%1)\n" \ _ASM_EXTABLE_UA(1b, %l2) \ @@ -295,7 +295,7 @@ do { \ } while (0) #define __get_user_asm(x, addr, itype, ltype, label) \ - asm_volatile_goto("\n" \ + asm_goto_output("\n" \ "1: mov"itype" %[umem],%[output]\n" \ _ASM_EXTABLE_UA(1b, %l2) \ : [output] ltype(x) \ @@ -375,7 +375,7 @@ do { \ __typeof__(_ptr) _old = (__typeof__(_ptr))(_pold); \ __typeof__(*(_ptr)) __old = *_old; \ __typeof__(*(_ptr)) __new = (_new); \ - asm_volatile_goto("\n" \ + asm_goto_output("\n" \ "1: " LOCK_PREFIX "cmpxchg"itype" %[new], %[ptr]\n"\ _ASM_EXTABLE_UA(1b, %l[label]) \ : CC_OUT(z) (success), \ @@ -394,7 +394,7 @@ do { \ __typeof__(_ptr) _old = (__typeof__(_ptr))(_pold); \ __typeof__(*(_ptr)) __old = *_old; \ __typeof__(*(_ptr)) __new = (_new); \ - asm_volatile_goto("\n" \ + asm_goto_output("\n" \ "1: " LOCK_PREFIX "cmpxchg8b %[ptr]\n" \ _ASM_EXTABLE_UA(1b, %l[label]) \ : CC_OUT(z) (success), \ @@ -477,7 +477,7 @@ struct __large_struct { unsigned long buf[100]; }; * aliasing issues. */ #define __put_user_goto(x, addr, itype, ltype, label) \ - asm_volatile_goto("\n" \ + asm goto("\n" \ "1: mov"itype" %0,%1\n" \ _ASM_EXTABLE_UA(1b, %l2) \ : : ltype(x), "m" (__m(addr)) \ diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index 5240d88db5..c878616a18 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -177,7 +177,7 @@ struct x86_init_ops { * struct x86_cpuinit_ops - platform specific cpu hotplug setups * @setup_percpu_clockev: set up the per cpu clock event device * @early_percpu_clock_init: early init of the per cpu clock event device - * @fixup_cpu_id: fixup function for cpuinfo_x86::phys_proc_id + * @fixup_cpu_id: fixup function for cpuinfo_x86::topo.pkg_id * @parallel_bringup: Parallel bringup control */ struct x86_cpuinit_ops { |