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| author | Sean Christopherson <seanjc@google.com> | 2022-11-10 23:35:00 +0300 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2022-12-15 21:37:28 +0300 |
| commit | 80d72a8f76e8f3f0b5a70b8c7022578e17bde8e7 (patch) | |
| tree | 56b102ef662840436107b4ec770f17728e00ca4a /arch/x86 | |
| parent | e996365ee7475805d2a01312532855004e89df84 (diff) | |
| download | linux-80d72a8f76e8f3f0b5a70b8c7022578e17bde8e7.tar.xz | |
x86/mm: Recompute physical address for every page of per-CPU CEA mapping
Recompute the physical address for each per-CPU page in the CPU entry
area, a recent commit inadvertantly modified cea_map_percpu_pages() such
that every PTE is mapped to the physical address of the first page.
Fixes: 9fd429c28073 ("x86/kasan: Map shadow for percpu pages on demand")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Link: https://lkml.kernel.org/r/20221110203504.1985010-2-seanjc@google.com
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/mm/cpu_entry_area.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/mm/cpu_entry_area.c b/arch/x86/mm/cpu_entry_area.c index dff9001e5e12..d831aae94b41 100644 --- a/arch/x86/mm/cpu_entry_area.c +++ b/arch/x86/mm/cpu_entry_area.c @@ -97,7 +97,7 @@ cea_map_percpu_pages(void *cea_vaddr, void *ptr, int pages, pgprot_t prot) early_pfn_to_nid(PFN_DOWN(pa))); for ( ; pages; pages--, cea_vaddr+= PAGE_SIZE, ptr += PAGE_SIZE) - cea_set_pte(cea_vaddr, pa, prot); + cea_set_pte(cea_vaddr, per_cpu_ptr_to_phys(ptr), prot); } static void __init percpu_setup_debug_store(unsigned int cpu) |