Re: [PATCH v3 2/2] x86/idle: prevent entering C6 with in service interrupts on Intel

2020-05-21 Thread Andrew Cooper
On 21/05/2020 09:45, Roger Pau Monné wrote: > On Wed, May 20, 2020 at 10:30:11PM +0100, Andrew Cooper wrote: >> On 15/05/2020 14:58, Roger Pau Monne wrote: >>> Apply a workaround for Intel errata BDX99, CLX30, SKX100, CFW125, >>> BDF104, BDH85, BDM135, KWB131: "A Pending Fixed Interrupt May Be >>>

Re: [PATCH v3 2/2] x86/idle: prevent entering C6 with in service interrupts on Intel

2020-05-21 Thread Roger Pau Monné
On Wed, May 20, 2020 at 10:30:11PM +0100, Andrew Cooper wrote: > On 15/05/2020 14:58, Roger Pau Monne wrote: > > Apply a workaround for Intel errata BDX99, CLX30, SKX100, CFW125, > > BDF104, BDH85, BDM135, KWB131: "A Pending Fixed Interrupt May Be > > Dispatched Before an Interrupt of The Same Prio

Re: [PATCH v3 2/2] x86/idle: prevent entering C6 with in service interrupts on Intel

2020-05-20 Thread Andrew Cooper
On 15/05/2020 14:58, Roger Pau Monne wrote: > Apply a workaround for Intel errata BDX99, CLX30, SKX100, CFW125, > BDF104, BDH85, BDM135, KWB131: "A Pending Fixed Interrupt May Be > Dispatched Before an Interrupt of The Same Priority Completes". HSM175 et al, so presumably a HSD, and HSE as well.

Re: [PATCH v3 2/2] x86/idle: prevent entering C6 with in service interrupts on Intel

2020-05-20 Thread Andrew Cooper
On 18/05/2020 16:47, Jan Beulich wrote: > [CAUTION - EXTERNAL EMAIL] DO NOT reply, click links, or open attachments > unless you have verified the sender and know the content is safe. > > On 18.05.2020 17:45, Roger Pau Monné wrote: >> On Mon, May 18, 2020 at 05:05:12PM +0200, Jan Beulich wrote: >>

Re: [PATCH v3 2/2] x86/idle: prevent entering C6 with in service interrupts on Intel

2020-05-18 Thread Jan Beulich
On 18.05.2020 17:45, Roger Pau Monné wrote: > On Mon, May 18, 2020 at 05:05:12PM +0200, Jan Beulich wrote: >> [CAUTION - EXTERNAL EMAIL] DO NOT reply, click links, or open attachments >> unless you have verified the sender and know the content is safe. >> >> On 15.05.2020 15:58, Roger Pau Monne wr

Re: [PATCH v3 2/2] x86/idle: prevent entering C6 with in service interrupts on Intel

2020-05-18 Thread Roger Pau Monné
On Mon, May 18, 2020 at 05:05:12PM +0200, Jan Beulich wrote: > [CAUTION - EXTERNAL EMAIL] DO NOT reply, click links, or open attachments > unless you have verified the sender and know the content is safe. > > On 15.05.2020 15:58, Roger Pau Monne wrote: > > --- a/docs/misc/xen-command-line.pandoc

Re: [PATCH v3 2/2] x86/idle: prevent entering C6 with in service interrupts on Intel

2020-05-18 Thread Jan Beulich
On 15.05.2020 15:58, Roger Pau Monne wrote: > --- a/docs/misc/xen-command-line.pandoc > +++ b/docs/misc/xen-command-line.pandoc > @@ -652,6 +652,15 @@ Specify the size of the console debug trace buffer. By > specifying `cpu:` > additionally a trace buffer of the specified size is allocated per cp

[PATCH v3 2/2] x86/idle: prevent entering C6 with in service interrupts on Intel

2020-05-15 Thread Roger Pau Monne
Apply a workaround for Intel errata BDX99, CLX30, SKX100, CFW125, BDF104, BDH85, BDM135, KWB131: "A Pending Fixed Interrupt May Be Dispatched Before an Interrupt of The Same Priority Completes". Apply the errata to all server and client models (big cores) from Broadwell to Cascade Lake. The workar