| Date | Tue, 22 Feb 2022 21:22:01 -0800 | Subject | [RFC PATCH 25/47] mm: asi: Avoid warning from NMI userspace accesses in ASI context | From | Junaid Shahid <> |
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nmi_uaccess_okay() emits a warning if current CR3 != mm->pgd. Limit the warning to only when ASI is not active.
Signed-off-by: Junaid Shahid <junaids@google.com>
--- arch/x86/mm/tlb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 25bee959d1d3..628f1cd904ac 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -1292,7 +1292,8 @@ bool nmi_uaccess_okay(void) if (loaded_mm != current_mm) return false; - VM_WARN_ON_ONCE(current_mm->pgd != __va(read_cr3_pa())); + VM_WARN_ON_ONCE(current_mm->pgd != __va(read_cr3_pa()) && + !is_asi_active()); return true; } -- 2.35.1.473.g83b2b277ed-goog
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