Re: [Qemu-devel] [PATCH build-fix] target-i386: emulate CPUID level of real hardware

2015-07-15 Thread Eduardo Habkost
On Thu, Jul 09, 2015 at 09:07:39PM +0200, Radim Krčmář wrote: > W10 insider has a bug where it ignores CPUID level and interprets > CPUID.(EAX=07H, ECX=0H) incorrectly, because CPUID in fact returned > CPUID.(EAX=04H, ECX=0H); this resulted in execution of unsupported > instructions. > > While it

[Qemu-devel] [PATCH build-fix] target-i386: emulate CPUID level of real hardware

2015-07-09 Thread Radim Krčmář
W10 insider has a bug where it ignores CPUID level and interprets CPUID.(EAX=07H, ECX=0H) incorrectly, because CPUID in fact returned CPUID.(EAX=04H, ECX=0H); this resulted in execution of unsupported instructions. While it's a Windows bug, there is no reason to emulate incorrect level. I used h