Re: [Qemu-devel] [PATCH v3] target-i386: emulate CPUID level of real hardware

2015-06-29 Thread Eduardo Habkost
On Mon, Jun 22, 2015 at 01:08:02PM +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

Re: [Qemu-devel] [PATCH v3] target-i386: emulate CPUID level of real hardware

2015-06-29 Thread Eduardo Habkost
On Mon, Jun 22, 2015 at 01:08:02PM +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 v3] target-i386: emulate CPUID level of real hardware

2015-06-22 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