mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-12-25 13:45:36 +00:00
c3a0cba5b1
The code that calculates the set of supported XSAVE components on CPUID looks at ext_save_areas to find out which components should be enabled. However, if there are zeroed entries in the ext_save_areas array, the ((env->features[esa->feature] & esa->bits) == esa->bits) check will always succeed and QEMU will unconditionally try to enable the component. Luckily this never caused any problems because the only missing entry in ext_save_areas is the PT State component (bit 8), and KVM currently doesn't support it (so it was cleared on ena_mask). But the code was still incorrect and would break if KVM starts returning CPUID[EAX=0xD,ECX=0].EAX[bit 8] as supported on GET_SUPPORTED_CPUID. Fix the problem by changing the code to not enable a XSAVE component if ExtSaveArea::bits is zero. Backports commit 9646f4927faf68e8690588c2fd6dc9834c440b58 from qemu |
||
|---|---|---|
| .. | ||
| arch_memory_mapping.c | ||
| bpt_helper.c | ||
| cc_helper.c | ||
| cc_helper_template.h | ||
| cpu-qom.h | ||
| cpu.c | ||
| cpu.h | ||
| excp_helper.c | ||
| fpu_helper.c | ||
| helper.c | ||
| helper.h | ||
| int_helper.c | ||
| Makefile.objs | ||
| mem_helper.c | ||
| misc_helper.c | ||
| mpx_helper.c | ||
| ops_sse.h | ||
| ops_sse_header.h | ||
| seg_helper.c | ||
| shift_helper_template.h | ||
| smm_helper.c | ||
| svm.h | ||
| svm_helper.c | ||
| TODO | ||
| topology.h | ||
| translate.c | ||
| unicorn.c | ||
| unicorn.h | ||