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Fix a bug in the emulation of CPUID leaf 0x4 where bhyve was claiming that

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the vcpu had no caches at all. This causes problems when executing applications
in the guest compiled with the Intel compiler.

Submitted by:	Mark Hill (mark.hill@tidalscale.com)
This commit is contained in:
neel 2014-08-23 22:44:31 +00:00
parent ea3ac18997
commit 33474e62d3
1 changed files with 2 additions and 2 deletions
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4
sys/amd64/vmm/x86.c
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@ -215,7 +215,7 @@ x86_emulate_cpuid(struct vm *vm, int vcpu_id,
break;
case CPUID_0000_0004:
do_cpuid(4, regs);
cpuid_count(*eax, *ecx, regs);
/*
* Do not expose topology.
@ -230,7 +230,7 @@ x86_emulate_cpuid(struct vm *vm, int vcpu_id,
* Therefore 0 for both indicates 1 core per
* package and no cache sharing.
*/
regs[0] &= 0xffff8000;
regs[0] &= 0x3ff;
break;
case CPUID_0000_0007: