From 80d72a8f76e8f3f0b5a70b8c7022578e17bde8e7 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 10 Nov 2022 20:35:00 +0000 Subject: 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 Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Andrey Ryabinin Link: https://lkml.kernel.org/r/20221110203504.1985010-2-seanjc@google.com --- arch/x86/mm/cpu_entry_area.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86') 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) -- cgit v1.2.3