From e36059e508c209703c3a60ef716a5b524fb0a832 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Fri, 17 Jan 2014 12:01:30 +0000 Subject: MIPS: KVM: use common EHINV aware UNIQUE_ENTRYHI When KVM is enabled and TLB invalidation is supported, kvm_mips_flush_host_tlb() can cause a machine check exception due to multiple matching TLB entries. This can occur on shutdown even when KVM hasn't been actively used. Commit adb78de9eae8 (MIPS: mm: Move UNIQUE_ENTRYHI macro to a header file) created a common UNIQUE_ENTRYHI in asm/tlb.h but it didn't update the copy of UNIQUE_ENTRYHI in kvm_tlb.c to use it. Commit 36b175451399 (MIPS: tlb: Set the EHINV bit for TLBINVF cores when invalidating the TLB) later added TLB invalidation (EHINV) support to the common UNIQUE_ENTRYHI. Therefore make kvm_tlb.c use the EHINV aware UNIQUE_ENTRYHI implementation in asm/tlb.h too. Signed-off-by: James Hogan Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: Gleb Natapov Cc: kvm@vger.kernel.org Cc: Sanjay Lal Reviewed-by: Markos Chandras Acked-by: Paolo Bonzini Signed-off-by: John Crispin Patchwork: http://patchwork.linux-mips.org/patch/6383/ --- arch/mips/kvm/kvm_tlb.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'arch/mips') diff --git a/arch/mips/kvm/kvm_tlb.c b/arch/mips/kvm/kvm_tlb.c index c777dd36d4a8..52083ea7fddd 100644 --- a/arch/mips/kvm/kvm_tlb.c +++ b/arch/mips/kvm/kvm_tlb.c @@ -25,6 +25,7 @@ #include #include #include +#include #undef CONFIG_MIPS_MT #include @@ -35,9 +36,6 @@ #define PRIx64 "llx" -/* Use VZ EntryHi.EHINV to invalidate TLB entries */ -#define UNIQUE_ENTRYHI(idx) (CKSEG0 + ((idx) << (PAGE_SHIFT + 1))) - atomic_t kvm_mips_instance; EXPORT_SYMBOL(kvm_mips_instance); -- cgit v1.2.3-58-ga151