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authorAndy Lutomirski <luto@kernel.org>2017-10-14 18:59:49 +0200
committerIngo Molnar <mingo@kernel.org>2017-10-18 15:25:02 +0200
commite8b9b0cc8269c85d8167aaee024bfcbb4976c031 (patch)
treeb7ab717f5a8acc03d147aaf4d2e1d32cf9633669 /arch
parentx86/microcode/intel: Disable late loading on model 79 (diff)
downloadlinux-e8b9b0cc8269c85d8167aaee024bfcbb4976c031.tar.xz
linux-e8b9b0cc8269c85d8167aaee024bfcbb4976c031.zip
x86/mm/64: Remove the last VM_BUG_ON() from the TLB code
Let's avoid hard-to-diagnose crashes in the future. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/f423bbc97864089fbdeb813f1ea126c6eaed844a.1508000261.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/mm/tlb.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 658bf0090565..7db23f9f804e 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -147,8 +147,8 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
this_cpu_write(cpu_tlbstate.is_lazy, false);
if (real_prev == next) {
- VM_BUG_ON(this_cpu_read(cpu_tlbstate.ctxs[prev_asid].ctx_id) !=
- next->context.ctx_id);
+ VM_WARN_ON(this_cpu_read(cpu_tlbstate.ctxs[prev_asid].ctx_id) !=
+ next->context.ctx_id);
/*
* We don't currently support having a real mm loaded without