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Re: [PATCH] x86/hvm: process softirq while saving/loading entries
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Thu, 29 Oct 2020 21:02:20 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
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On Thu, Oct 29, 2020 at 05:38:17PM +0100, Jan Beulich wrote:
> On 29.10.2020 16:20, Roger Pau Monne wrote:
> > On slow systems with sync_console saving or loading the context of big
> > guests can cause the watchdog to trigger. Fix this by adding a couple
> > of process_pending_softirqs.
>
> Which raises the question in how far this is then also a problem
> for the caller of the underlying hypercall. IOW I wonder whether
> instead we need to make use of continuations here. Nevertheless
FWIW, I've only hit this with debug builds on boxes that have slow
serial with sync_console enabled, due to the verbose printks.
>
> > Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
>
> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
Thanks.
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