diff options
Diffstat (limited to 'arch/x86/boot')
| -rw-r--r-- | arch/x86/boot/compressed/Makefile | 4 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/mem.c | 2 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/misc.c | 16 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/sev.c | 3 | ||||
| -rw-r--r-- | arch/x86/boot/pm.c | 7 | ||||
| -rw-r--r-- | arch/x86/boot/string.c | 2 |
6 files changed, 27 insertions, 7 deletions
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index 71fc531b95..e9522c6893 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -53,7 +53,7 @@ KBUILD_CFLAGS += -D__DISABLE_EXPORTS KBUILD_CFLAGS += $(call cc-option,-Wa$(comma)-mrelax-relocations=no) KBUILD_CFLAGS += -include $(srctree)/include/linux/hidden.h -# sev.c indirectly inludes inat-table.h which is generated during +# sev.c indirectly includes inat-table.h which is generated during # compilation and stored in $(objtree). Add the directory to the includes so # that the compiler finds it even with out-of-tree builds (make O=/some/path). CFLAGS_sev.o += -I$(objtree)/arch/x86/lib/ @@ -84,7 +84,7 @@ LDFLAGS_vmlinux += -T hostprogs := mkpiggy HOST_EXTRACFLAGS += -I$(srctree)/tools/include -sed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABCDGRSTVW] \(_text\|__bss_start\|_end\)$$/\#define VO_\2 _AC(0x\1,UL)/p' +sed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABCDGRSTVW] \(_text\|__start_rodata\|__bss_start\|_end\)$$/\#define VO_\2 _AC(0x\1,UL)/p' quiet_cmd_voffset = VOFFSET $@ cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@ diff --git a/arch/x86/boot/compressed/mem.c b/arch/x86/boot/compressed/mem.c index b3c3a4be74..dbba332e4a 100644 --- a/arch/x86/boot/compressed/mem.c +++ b/arch/x86/boot/compressed/mem.c @@ -8,7 +8,7 @@ /* * accept_memory() and process_unaccepted_memory() called from EFI stub which - * runs before decompresser and its early_tdx_detect(). + * runs before decompressor and its early_tdx_detect(). * * Enumerate TDX directly from the early users. */ diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index b99e08e681..ee0fac468e 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -330,6 +330,7 @@ static size_t parse_elf(void *output) return ehdr.e_entry - LOAD_PHYSICAL_ADDR; } +const unsigned long kernel_text_size = VO___start_rodata - VO__text; const unsigned long kernel_total_size = VO__end - VO__text; static u8 boot_heap[BOOT_HEAP_SIZE] __aligned(4); @@ -358,6 +359,19 @@ unsigned long decompress_kernel(unsigned char *outbuf, unsigned long virt_addr, } /* + * Set the memory encryption xloadflag based on the mem_encrypt= command line + * parameter, if provided. + */ +static void parse_mem_encrypt(struct setup_header *hdr) +{ + int on = cmdline_find_option_bool("mem_encrypt=on"); + int off = cmdline_find_option_bool("mem_encrypt=off"); + + if (on > off) + hdr->xloadflags |= XLF_MEM_ENCRYPTION; +} + +/* * The compressed kernel image (ZO), has been moved so that its position * is against the end of the buffer used to hold the uncompressed kernel * image (VO) and the execution environment (.bss, .brk), which makes sure @@ -387,6 +401,8 @@ asmlinkage __visible void *extract_kernel(void *rmode, unsigned char *output) /* Clear flags intended for solely in-kernel use. */ boot_params_ptr->hdr.loadflags &= ~KASLR_FLAG; + parse_mem_encrypt(&boot_params_ptr->hdr); + sanitize_boot_params(boot_params_ptr); if (boot_params_ptr->screen_info.orig_video_mode == 7) { diff --git a/arch/x86/boot/compressed/sev.c b/arch/x86/boot/compressed/sev.c index 454acd7a2d..4c9b752814 100644 --- a/arch/x86/boot/compressed/sev.c +++ b/arch/x86/boot/compressed/sev.c @@ -116,6 +116,9 @@ static bool fault_in_kernel_space(unsigned long address) #undef __init #define __init +#undef __head +#define __head + #define __BOOT_COMPRESSED /* Basic instruction decoding support needed */ diff --git a/arch/x86/boot/pm.c b/arch/x86/boot/pm.c index 40031a6147..5941f930f6 100644 --- a/arch/x86/boot/pm.c +++ b/arch/x86/boot/pm.c @@ -11,6 +11,7 @@ */ #include "boot.h" +#include <asm/desc_defs.h> #include <asm/segment.h> /* @@ -67,13 +68,13 @@ static void setup_gdt(void) being 8-byte unaligned. Intel recommends 16 byte alignment. */ static const u64 boot_gdt[] __attribute__((aligned(16))) = { /* CS: code, read/execute, 4 GB, base 0 */ - [GDT_ENTRY_BOOT_CS] = GDT_ENTRY(0xc09b, 0, 0xfffff), + [GDT_ENTRY_BOOT_CS] = GDT_ENTRY(DESC_CODE32, 0, 0xfffff), /* DS: data, read/write, 4 GB, base 0 */ - [GDT_ENTRY_BOOT_DS] = GDT_ENTRY(0xc093, 0, 0xfffff), + [GDT_ENTRY_BOOT_DS] = GDT_ENTRY(DESC_DATA32, 0, 0xfffff), /* TSS: 32-bit tss, 104 bytes, base 4096 */ /* We only have a TSS here to keep Intel VT happy; we don't actually use it for anything. */ - [GDT_ENTRY_BOOT_TSS] = GDT_ENTRY(0x0089, 4096, 103), + [GDT_ENTRY_BOOT_TSS] = GDT_ENTRY(DESC_TSS32, 4096, 103), }; /* Xen HVM incorrectly stores a pointer to the gdt_ptr, instead of the gdt_ptr contents. Thus, make it static so it will diff --git a/arch/x86/boot/string.c b/arch/x86/boot/string.c index 1c8541ae3b..c23f3b9c84 100644 --- a/arch/x86/boot/string.c +++ b/arch/x86/boot/string.c @@ -49,7 +49,7 @@ int strcmp(const char *str1, const char *str2) { const unsigned char *s1 = (const unsigned char *)str1; const unsigned char *s2 = (const unsigned char *)str2; - int delta = 0; + int delta; while (*s1 || *s2) { delta = *s1 - *s2; |