Re: [Xen-devel] [PATCH 2/3] tests/x86emul: Save and restore FPU state in the emulator callbacks

2018-03-09 Thread Jan Beulich
>>> On 09.03.18 at 12:45, wrote: > On 09/03/18 11:41, Jan Beulich wrote: > On 06.03.18 at 21:24, wrote: >>> Currently with then native toolchain on Debian Jessie ./test_x86_emulator >>> yeilds: >>> >>> Testing AVX2 256bit single native

Re: [Xen-devel] [PATCH 2/3] tests/x86emul: Save and restore FPU state in the emulator callbacks

2018-03-09 Thread Andrew Cooper
On 09/03/18 11:41, Jan Beulich wrote: On 06.03.18 at 21:24, wrote: >> Currently with then native toolchain on Debian Jessie ./test_x86_emulator >> yeilds: >> >> Testing AVX2 256bit single native execution...okay >> Testing AVX2 256bit single 64-bit code

Re: [Xen-devel] [PATCH 2/3] tests/x86emul: Save and restore FPU state in the emulator callbacks

2018-03-09 Thread Jan Beulich
>>> On 06.03.18 at 21:24, wrote: > Currently with then native toolchain on Debian Jessie ./test_x86_emulator > yeilds: > > Testing AVX2 256bit single native execution...okay > Testing AVX2 256bit single 64-bit code sequence...[line 933] failed! > > The bug is that

[Xen-devel] [PATCH 2/3] tests/x86emul: Save and restore FPU state in the emulator callbacks

2018-03-06 Thread Andrew Cooper
Currently with then native toolchain on Debian Jessie ./test_x86_emulator yeilds: Testing AVX2 256bit single native execution...okay Testing AVX2 256bit single 64-bit code sequence...[line 933] failed! The bug is that libc's memcpy() in read() uses %xmm8 (specifically, in