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Take disabled/forced CPU features into account

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When comparing x86 CPUs, features with 'disabled' policy were mistakenly
required to be supported by the host CPU.

Likewise, features with 'force' policy which were supported by host CPU
would make CPUs incompatible if 'strict' match was used by guest CPU.

This patch fixes both issues.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This commit is contained in:
Jiri Denemark 2010-01-12 15:25:50 +01:00 committed by Matthias Bolte
parent 5d462bd0b3
commit 5e13b7ab5e
1 changed files with 3 additions and 0 deletions
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3
src/cpu/cpu_x86.c
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@ -829,11 +829,14 @@ x86Compute(virCPUDefPtr host,
if (!(cpu_forbid = x86ModelFromCPU(cpu, map, VIR_CPU_FEATURE_FORBID)))
goto error;
x86ModelSubtract(cpu_require, cpu_disable);
if ((diff = x86ModelCopy(host_model)) == NULL)
goto no_memory;
x86ModelSubtract(diff, cpu_require);
x86ModelSubtract(diff, cpu_optional);
x86ModelSubtract(diff, cpu_force);
for (i = 0; i < cpu_forbid->ncpuid; i++) {
const struct cpuX86cpuid *cpuid1;