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RE: Ping²: [PATCH] x86: enable interrupts around dump_execstate()
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Henry Wang <Henry.Wang@xxxxxxx>
- Date: Tue, 19 Jul 2022 12:54:58 +0000
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- Thread-topic: Ping²: [PATCH] x86: enable interrupts around dump_execstate()
Hi Jan,
> -----Original Message-----
> From: Jan Beulich <jbeulich@xxxxxxxx>
> Henry,
>
> -------- Forwarded Message --------
> Subject: Ping²: [PATCH] x86: enable interrupts around dump_execstate()
>
> >On 11.01.2022 11:08, Jan Beulich wrote:
> >> On 16.12.2021 14:33, Jan Beulich wrote:
> >>> On 16.12.2021 12:54, Andrew Cooper wrote:
> >>>> On 13/12/2021 15:12, Jan Beulich wrote:
> >>>>> show_hvm_stack() requires interrupts to be enabled to avoids
> triggering
> >>>>> the consistency check in check_lock() for the p2m lock. To do so in
> >>>>> spurious_interrupt() requires adding reentrancy protection / handling
> >>>>> there.
> >>>>>
> >>>>> Fixes: adb715db698b ("x86/HVM: also dump stacks from
> show_execution_state()")
> >>>>> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> >>
> >> There's a bug here which we need to deal with one way or another.
> >> May I please ask for a response to the issues pointed out with
> >> what you said in your earlier reply?
> >
> >I sincerely hope we won't ship another major version with this
> >issue unfixed. The only option beyond applying this patch that I'm
> >aware of is to revert the commit pointed at by Fixes:, which imo
> >would be a shame (moving us further away from proper PVH support,
> >including Dom0).
>
> perhaps another item for the list of things needing resolution for
> the release.
Many thanks for this information! I can see this thread is quite old and
probably even before I became the release manager so thanks for your
effort to find this :))
Yes of course, I've added this series to my blockers list and I will start to
track it so that we can have proper resolution for the 4.17 release.
Kind regards,
Henry
>
> Jan
|
