Re: [Xen-devel] [PATCH] x86: clear RDRAND CPUID bit on AMD family 15h/16h

2019-08-29 Thread Andrew Cooper
On 29/08/2019 13:39, Juergen Gross wrote: > On 29.08.19 14:27, Jan Beulich wrote: >> On 29.08.2019 14:01, Juergen Gross wrote: >>> On 29.08.19 13:42, Andrew Cooper wrote: On 29/08/2019 10:28, Jan Beulich wrote: > Inspired by Linux commit c49a0a80137c7ca7d6ced4c812c9e07a949f6f24: >

Re: [Xen-devel] [PATCH] x86: clear RDRAND CPUID bit on AMD family 15h/16h

2019-08-29 Thread Juergen Gross
On 29.08.19 14:27, Jan Beulich wrote: On 29.08.2019 14:01, Juergen Gross wrote: On 29.08.19 13:42, Andrew Cooper wrote: On 29/08/2019 10:28, Jan Beulich wrote: Inspired by Linux commit c49a0a80137c7ca7d6ced4c812c9e07a949f6f24: There have been reports of RDRAND issues after resuming

Re: [Xen-devel] [PATCH] x86: clear RDRAND CPUID bit on AMD family 15h/16h

2019-08-29 Thread Jan Beulich
On 29.08.2019 14:01, Juergen Gross wrote: > On 29.08.19 13:42, Andrew Cooper wrote: >> On 29/08/2019 10:28, Jan Beulich wrote: >>> Inspired by Linux commit c49a0a80137c7ca7d6ced4c812c9e07a949f6f24: >>> >>> There have been reports of RDRAND issues after resuming from suspend on >>> some

Re: [Xen-devel] [PATCH] x86: clear RDRAND CPUID bit on AMD family 15h/16h

2019-08-29 Thread Juergen Gross
On 29.08.19 13:42, Andrew Cooper wrote: On 29/08/2019 10:28, Jan Beulich wrote: Inspired by Linux commit c49a0a80137c7ca7d6ced4c812c9e07a949f6f24: There have been reports of RDRAND issues after resuming from suspend on some AMD family 15h and family 16h systems. This issue stems from

Re: [Xen-devel] [PATCH] x86: clear RDRAND CPUID bit on AMD family 15h/16h

2019-08-29 Thread Andrew Cooper
On 29/08/2019 10:28, Jan Beulich wrote: > Inspired by Linux commit c49a0a80137c7ca7d6ced4c812c9e07a949f6f24: > > There have been reports of RDRAND issues after resuming from suspend on > some AMD family 15h and family 16h systems. This issue stems from a BIOS > not performing the

[Xen-devel] [PATCH] x86: clear RDRAND CPUID bit on AMD family 15h/16h

2019-08-29 Thread Jan Beulich
Inspired by Linux commit c49a0a80137c7ca7d6ced4c812c9e07a949f6f24: There have been reports of RDRAND issues after resuming from suspend on some AMD family 15h and family 16h systems. This issue stems from a BIOS not performing the proper steps during resume to ensure RDRAND continues