Re: [Xen-devel] [PATCH v7 08/10] x86/microcode: Synchronize late microcode loading

2019-06-11 Thread Raj, Ashok
Hi Gao, Jan On Tue, Jun 11, 2019 at 08:36:17PM +0800, Chao Gao wrote: > On Wed, Jun 05, 2019 at 08:09:43AM -0600, Jan Beulich wrote: > > > >There's no comment here and nothing in the description: I don't > >recall clarification as to whether RDTSC is fine to be issued by a > >thread when ucode is

Re: [Xen-devel] [PATCH v7 08/10] x86/microcode: Synchronize late microcode loading

2019-06-11 Thread Jan Beulich
>>> On 11.06.19 at 14:36, wrote: > On Wed, Jun 05, 2019 at 08:09:43AM -0600, Jan Beulich wrote: > On 27.05.19 at 10:31, wrote: >>On the whole, taking a 256-thread system as example, you >>allow the whole process to take over 4 min without calling >>panic(). >>Leaving aside guests, I don't thi

Re: [Xen-devel] [PATCH v7 08/10] x86/microcode: Synchronize late microcode loading

2019-06-11 Thread Chao Gao
On Wed, Jun 05, 2019 at 08:09:43AM -0600, Jan Beulich wrote: On 27.05.19 at 10:31, wrote: >> This patch ports microcode improvement patches from linux kernel. >> >> Before you read any further: the early loading method is still the >> preferred one and you should always do that. The followin

Re: [Xen-devel] [PATCH v7 08/10] x86/microcode: Synchronize late microcode loading

2019-06-05 Thread Roger Pau Monné
On Mon, May 27, 2019 at 04:31:29PM +0800, Chao Gao wrote: > This patch ports microcode improvement patches from linux kernel. > > Before you read any further: the early loading method is still the > preferred one and you should always do that. The following patch is > improving the late loading me

Re: [Xen-devel] [PATCH v7 08/10] x86/microcode: Synchronize late microcode loading

2019-06-05 Thread Jan Beulich
>>> On 27.05.19 at 10:31, wrote: > This patch ports microcode improvement patches from linux kernel. > > Before you read any further: the early loading method is still the > preferred one and you should always do that. The following patch is > improving the late loading mechanism for long running

[Xen-devel] [PATCH v7 08/10] x86/microcode: Synchronize late microcode loading

2019-05-27 Thread Chao Gao
This patch ports microcode improvement patches from linux kernel. Before you read any further: the early loading method is still the preferred one and you should always do that. The following patch is improving the late loading mechanism for long running jobs and cloud use cases. Gather all cores