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| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-08-18 16:39:48 +0200 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-09-03 21:31:27 +0200 |
| commit | 1cd31e1b556e977a1bc229ed2545151bf9269ea3 (patch) | |
| tree | b3731edb9fce424840076ba07a553af056694a33 /arch | |
| parent | 6c9866eef41246035b7bccd3a45ed4be8cedd413 (diff) | |
| download | lwn-1cd31e1b556e977a1bc229ed2545151bf9269ea3.tar.gz lwn-1cd31e1b556e977a1bc229ed2545151bf9269ea3.zip | |
Revert "KVM: x86: Increase the number of fixed MTRR regs to 10"
commit 0d234daf7e0a3290a3a20c8087eefbd6335a5bd4 upstream.
This reverts commit 682367c494869008eb89ef733f196e99415ae862,
which causes 32-bit SMP Windows 7 guests to panic.
SeaBIOS has a limit on the number of MTRRs that it can handle,
and this patch exceeded the limit. Better revert it.
Thanks to Nadav Amit for debugging the cause.
Reported-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 694851592399..ec6c0395b512 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -92,7 +92,7 @@ #define KVM_REFILL_PAGES 25 #define KVM_MAX_CPUID_ENTRIES 80 #define KVM_NR_FIXED_MTRR_REGION 88 -#define KVM_NR_VAR_MTRR 10 +#define KVM_NR_VAR_MTRR 8 #define ASYNC_PF_PER_VCPU 64 |