diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/aperture_64.c | 13 | ||||
| -rw-r--r-- | arch/x86/kernel/unwind_orc.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/init_32.c | 14 | ||||
| -rw-r--r-- | arch/x86/xen/mmu_hvm.c | 37 |
4 files changed, 31 insertions, 35 deletions
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c index 10562885f5fc..af3ba08b684b 100644 --- a/arch/x86/kernel/aperture_64.c +++ b/arch/x86/kernel/aperture_64.c @@ -73,12 +73,23 @@ static int gart_mem_pfn_is_ram(unsigned long pfn) (pfn >= aperture_pfn_start + aperture_page_count)); } +#ifdef CONFIG_PROC_VMCORE +static bool gart_oldmem_pfn_is_ram(struct vmcore_cb *cb, unsigned long pfn) +{ + return !!gart_mem_pfn_is_ram(pfn); +} + +static struct vmcore_cb gart_vmcore_cb = { + .pfn_is_ram = gart_oldmem_pfn_is_ram, +}; +#endif + static void __init exclude_from_core(u64 aper_base, u32 aper_order) { aperture_pfn_start = aper_base >> PAGE_SHIFT; aperture_page_count = (32 * 1024 * 1024) << aper_order >> PAGE_SHIFT; #ifdef CONFIG_PROC_VMCORE - WARN_ON(register_oldmem_pfn_is_ram(&gart_mem_pfn_is_ram)); + register_vmcore_cb(&gart_vmcore_cb); #endif #ifdef CONFIG_PROC_KCORE WARN_ON(register_mem_pfn_is_ram(&gart_mem_pfn_is_ram)); diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c index e6f7592790af..2de3c8c5eba9 100644 --- a/arch/x86/kernel/unwind_orc.c +++ b/arch/x86/kernel/unwind_orc.c @@ -175,7 +175,7 @@ static struct orc_entry *orc_find(unsigned long ip) } /* vmlinux .init slow lookup: */ - if (init_kernel_text(ip)) + if (is_kernel_inittext(ip)) return __orc_find(__start_orc_unwind_ip, __start_orc_unwind, __stop_orc_unwind_ip - __start_orc_unwind_ip, ip); diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 5cd7ea6d645c..d4e2648a1dfb 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -238,11 +238,7 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base) } } -/* - * The <linux/kallsyms.h> already defines is_kernel_text, - * using '__' prefix not to get in conflict. - */ -static inline int __is_kernel_text(unsigned long addr) +static inline int is_x86_32_kernel_text(unsigned long addr) { if (addr >= (unsigned long)_text && addr <= (unsigned long)__init_end) return 1; @@ -333,8 +329,8 @@ repeat: addr2 = (pfn + PTRS_PER_PTE-1) * PAGE_SIZE + PAGE_OFFSET + PAGE_SIZE-1; - if (__is_kernel_text(addr) || - __is_kernel_text(addr2)) + if (is_x86_32_kernel_text(addr) || + is_x86_32_kernel_text(addr2)) prot = PAGE_KERNEL_LARGE_EXEC; pages_2m++; @@ -359,7 +355,7 @@ repeat: */ pgprot_t init_prot = __pgprot(PTE_IDENT_ATTR); - if (__is_kernel_text(addr)) + if (is_x86_32_kernel_text(addr)) prot = PAGE_KERNEL_EXEC; pages_4k++; @@ -789,7 +785,7 @@ static void mark_nxdata_nx(void) */ unsigned long start = PFN_ALIGN(_etext); /* - * This comes from __is_kernel_text upper limit. Also HPAGE where used: + * This comes from is_x86_32_kernel_text upper limit. Also HPAGE where used: */ unsigned long size = (((unsigned long)__init_end + HPAGE_SIZE) & HPAGE_MASK) - start; diff --git a/arch/x86/xen/mmu_hvm.c b/arch/x86/xen/mmu_hvm.c index 57409373750f..509bdee3ab90 100644 --- a/arch/x86/xen/mmu_hvm.c +++ b/arch/x86/xen/mmu_hvm.c @@ -9,39 +9,28 @@ #ifdef CONFIG_PROC_VMCORE /* - * This function is used in two contexts: - * - the kdump kernel has to check whether a pfn of the crashed kernel - * was a ballooned page. vmcore is using this function to decide - * whether to access a pfn of the crashed kernel. - * - the kexec kernel has to check whether a pfn was ballooned by the - * previous kernel. If the pfn is ballooned, handle it properly. - * Returns 0 if the pfn is not backed by a RAM page, the caller may + * The kdump kernel has to check whether a pfn of the crashed kernel + * was a ballooned page. vmcore is using this function to decide + * whether to access a pfn of the crashed kernel. + * Returns "false" if the pfn is not backed by a RAM page, the caller may * handle the pfn special in this case. */ -static int xen_oldmem_pfn_is_ram(unsigned long pfn) +static bool xen_vmcore_pfn_is_ram(struct vmcore_cb *cb, unsigned long pfn) { struct xen_hvm_get_mem_type a = { .domid = DOMID_SELF, .pfn = pfn, }; - int ram; - if (HYPERVISOR_hvm_op(HVMOP_get_mem_type, &a)) - return -ENXIO; - - switch (a.mem_type) { - case HVMMEM_mmio_dm: - ram = 0; - break; - case HVMMEM_ram_rw: - case HVMMEM_ram_ro: - default: - ram = 1; - break; + if (HYPERVISOR_hvm_op(HVMOP_get_mem_type, &a)) { + pr_warn_once("Unexpected HVMOP_get_mem_type failure\n"); + return true; } - - return ram; + return a.mem_type != HVMMEM_mmio_dm; } +static struct vmcore_cb xen_vmcore_cb = { + .pfn_is_ram = xen_vmcore_pfn_is_ram, +}; #endif static void xen_hvm_exit_mmap(struct mm_struct *mm) @@ -75,6 +64,6 @@ void __init xen_hvm_init_mmu_ops(void) if (is_pagetable_dying_supported()) pv_ops.mmu.exit_mmap = xen_hvm_exit_mmap; #ifdef CONFIG_PROC_VMCORE - WARN_ON(register_oldmem_pfn_is_ram(&xen_oldmem_pfn_is_ram)); + register_vmcore_cb(&xen_vmcore_cb); #endif } |