From ab7a1d20a3def1448bdcc128d77ebf50a672e4a5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 13 Aug 2024 07:04:46 +0200 Subject: Merging upstream version 6.10.4. Signed-off-by: Daniel Baumann --- arch/riscv/kernel/sbi-ipi.c | 2 +- arch/riscv/mm/fault.c | 17 +++++++++-------- arch/riscv/mm/init.c | 15 +++++++++++---- arch/riscv/purgatory/entry.S | 2 ++ 4 files changed, 23 insertions(+), 13 deletions(-) (limited to 'arch/riscv') diff --git a/arch/riscv/kernel/sbi-ipi.c b/arch/riscv/kernel/sbi-ipi.c index 1026e22955..0cc5559c08 100644 --- a/arch/riscv/kernel/sbi-ipi.c +++ b/arch/riscv/kernel/sbi-ipi.c @@ -71,7 +71,7 @@ void __init sbi_ipi_init(void) * the masking/unmasking of virtual IPIs is done * via generic IPI-Mux */ - cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, + cpuhp_setup_state(CPUHP_AP_IRQ_RISCV_SBI_IPI_STARTING, "irqchip/sbi-ipi:starting", sbi_ipi_starting_cpu, NULL); diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c index 5224f37338..a9f2b4af8f 100644 --- a/arch/riscv/mm/fault.c +++ b/arch/riscv/mm/fault.c @@ -61,26 +61,27 @@ static inline void no_context(struct pt_regs *regs, unsigned long addr) static inline void mm_fault_error(struct pt_regs *regs, unsigned long addr, vm_fault_t fault) { + if (!user_mode(regs)) { + no_context(regs, addr); + return; + } + if (fault & VM_FAULT_OOM) { /* * We ran out of memory, call the OOM killer, and return the userspace * (which will retry the fault, or kill us if we got oom-killed). */ - if (!user_mode(regs)) { - no_context(regs, addr); - return; - } pagefault_out_of_memory(); return; } else if (fault & (VM_FAULT_SIGBUS | VM_FAULT_HWPOISON | VM_FAULT_HWPOISON_LARGE)) { /* Kernel mode? Handle exceptions or die */ - if (!user_mode(regs)) { - no_context(regs, addr); - return; - } do_trap(regs, SIGBUS, BUS_ADRERR, addr); return; + } else if (fault & VM_FAULT_SIGSEGV) { + do_trap(regs, SIGSEGV, SEGV_MAPERR, addr); + return; } + BUG(); } diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index e3405e4b99..7e25606f85 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -233,8 +233,6 @@ static void __init setup_bootmem(void) */ memblock_reserve(vmlinux_start, vmlinux_end - vmlinux_start); - phys_ram_end = memblock_end_of_DRAM(); - /* * Make sure we align the start of the memory on a PMD boundary so that * at worst, we map the linear mapping with PMD mappings. @@ -249,6 +247,16 @@ static void __init setup_bootmem(void) if (IS_ENABLED(CONFIG_64BIT) && IS_ENABLED(CONFIG_MMU)) kernel_map.va_pa_offset = PAGE_OFFSET - phys_ram_base; + /* + * The size of the linear page mapping may restrict the amount of + * usable RAM. + */ + if (IS_ENABLED(CONFIG_64BIT)) { + max_mapped_addr = __pa(PAGE_OFFSET) + KERN_VIRT_SIZE; + memblock_cap_memory_range(phys_ram_base, + max_mapped_addr - phys_ram_base); + } + /* * Reserve physical address space that would be mapped to virtual * addresses greater than (void *)(-PAGE_SIZE) because: @@ -265,6 +273,7 @@ static void __init setup_bootmem(void) memblock_reserve(max_mapped_addr, (phys_addr_t)-max_mapped_addr); } + phys_ram_end = memblock_end_of_DRAM(); min_low_pfn = PFN_UP(phys_ram_base); max_low_pfn = max_pfn = PFN_DOWN(phys_ram_end); high_memory = (void *)(__va(PFN_PHYS(max_low_pfn))); @@ -1289,8 +1298,6 @@ static void __init create_linear_mapping_page_table(void) if (start <= __pa(PAGE_OFFSET) && __pa(PAGE_OFFSET) < end) start = __pa(PAGE_OFFSET); - if (end >= __pa(PAGE_OFFSET) + memory_limit) - end = __pa(PAGE_OFFSET) + memory_limit; create_linear_mapping_range(start, end, 0); } diff --git a/arch/riscv/purgatory/entry.S b/arch/riscv/purgatory/entry.S index 5bcf3af903..0e6ca6d5ae 100644 --- a/arch/riscv/purgatory/entry.S +++ b/arch/riscv/purgatory/entry.S @@ -7,6 +7,7 @@ * Author: Li Zhengyu (lizhengyu3@huawei.com) * */ +#include #include .text @@ -34,6 +35,7 @@ SYM_CODE_END(purgatory_start) .data +.align LGREG SYM_DATA(riscv_kernel_entry, .quad 0) .end -- cgit v1.2.3