diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-08-18 16:39:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-09-05 16:34:15 -0700 |
| commit | 98a634d07e5d01ca089e08916477b43805e13c41 (patch) | |
| tree | 87b394d33e32f16ad2d2c50cca39bb1d4bc9086c /arch/x86 | |
| parent | dfc7aa43fd0d6f706a4286dd96db676a7309961e (diff) | |
| download | lwn-98a634d07e5d01ca089e08916477b43805e13c41.tar.gz lwn-98a634d07e5d01ca089e08916477b43805e13c41.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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86')
| -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 3092300a07cd..d71d5ac78e42 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -99,7 +99,7 @@ static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) #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 |