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i386: correct cpu_x86_cpuid(0xd)

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Intel SDM says for CPUID function 0DH, sub-function 0:

| • ECX enumerates the size (in bytes) required by the XSAVE instruction for an
| XSAVE area containing all the user state components supported by this
| processor.
| • EBX enumerates the size (in bytes) required by the XSAVE instruction for an
| XSAVE area containing all the user state components corresponding to bits
| currently set in XCR0.

Backports commit de2e68c902f7b6e438b0fa3cfedd74a06a20704f from qemu
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Sebastian Andrzej Siewior 2018-11-11 07:52:34 -05:00 committed by Lioncash
parent 7c94b86d31
commit a09a074255
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 1 additions and 1 deletions
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qemu/target/i386/cpu.c
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@ -4241,7 +4241,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
*ecx = xsave_area_size(x86_cpu_xsave_components(cpu)); *ecx = xsave_area_size(x86_cpu_xsave_components(cpu));
*eax = env->features[FEAT_XSAVE_COMP_LO]; *eax = env->features[FEAT_XSAVE_COMP_LO];
*edx = env->features[FEAT_XSAVE_COMP_HI]; *edx = env->features[FEAT_XSAVE_COMP_HI];
*ebx = *ecx; *ebx = xsave_area_size(env->xcr0);
} else if (count == 1) { } else if (count == 1) {
*eax = env->features[FEAT_XSAVE]; *eax = env->features[FEAT_XSAVE];
} else if (count < ARRAY_SIZE(x86_ext_save_areas)) { } else if (count < ARRAY_SIZE(x86_ext_save_areas)) {