From: sashiko-bot@kernel.org
To: "Christian Borntraeger" <borntraeger@linux.ibm.com>
Cc: linux-s390 <linux-s390@vger.kernel.org>,
"Heiko Carstens" <hca@linux.ibm.com>,
"Vasily Gorbik" <gor@linux.ibm.com>,
"Alexander Gordeev" <agordeev@linux.ibm.com>
Subject: Re: [PATCH v2 1/2] KVM: Set up async page faults only for faults that need to wait
Date: Tue, 20 Oct 2026 18:02:27 +0000 [thread overview]
Message-ID: <sashiko-outbox-179450@kernel.org> (raw)
In-Reply-To: <20261020175818.375700-2-borntraeger@linux.ibm.com>
> hva_to_pfn() checks a FOLL_NOWAIT gup() for EINTR, EAGAIN and EHWPOISON.
> There might be others like -EFAULT for VM_FAULT_SIGBUS. For those other
> errors, reporting KVM_PFN_ERR_NEEDS_IO would be wrong as it triggers an
> async_pf resulting in endless retries.
>
> Return KVM_PFN_ERR_NEEDS_IO only if gup() returned 0 pages and report
> the error otherwise.
>
> Fixes: 0857b9e95c1a ("KVM: Enable async page fault processing")
> Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261020175818.375700-1-borntraeger@linux.ibm.com?part=1
next prev parent reply other threads:[~2026-10-20 18:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-20 17:58 [PATCH v2 0/2] Fix error handling for async_pf Christian Borntraeger
2026-10-20 17:58 ` [PATCH v2 1/2] KVM: Set up async page faults only for faults that need to wait Christian Borntraeger
2026-10-20 18:02 ` sashiko-bot [this message]
2026-10-20 17:58 ` [PATCH v2 2/2] KVM: selftests: Test that KVM_RUN fails for unresolvable host faults Christian Borntraeger
2026-10-20 18:09 ` sashiko-bot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=sashiko-outbox-179450@kernel.org \
--to=sashiko-bot@kernel.org \
--cc=agordeev@linux.ibm.com \
--cc=borntraeger@linux.ibm.com \
--cc=gor@linux.ibm.com \
--cc=hca@linux.ibm.com \
--cc=linux-s390@vger.kernel.org \
--cc=sashiko-reviews@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox