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Revert "KVM: x86: Increase the number of fixed MTRR regs to 10"

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commit 0d234daf7e upstream.

This reverts commit 682367c494,
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>
This commit is contained in:
Paolo Bonzini 2014-08-18 16:39:48 +02:00 committed by Greg Kroah-Hartman
parent d175e30c03
commit d3cf5ab75b
1 changed files with 1 additions and 1 deletions
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2
arch/x86/include/asm/kvm_host.h
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@ -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