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From: Janosch Frank <frankja@linux.ibm.com>
To: Eric Farman <farman@linux.ibm.com>,
	Christian Borntraeger <borntraeger@linux.ibm.com>,
	Claudio Imbrenda <imbrenda@linux.ibm.com>,
	David Hildenbrand <david@kernel.org>,
	Christoph Schlameuss <schlameuss@linux.ibm.com>
Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org
Subject: Re: [PATCH] KVM: s390: vsie: retry SIE when unable to get vsie_page
Date: Mon, 5 Jan 2026 13:41:08 +0100	[thread overview]
Message-ID: <8334988f-2caa-4361-b0b9-50b9f41f6d8a@linux.ibm.com> (raw)
In-Reply-To: <20251217030107.1729776-1-farman@linux.ibm.com>

On 12/17/25 04:01, Eric Farman wrote:
> SIE may exit because of pending host work, such as handling an interrupt,
> in which case VSIE rewinds the guest PSW such that it is transparently
> resumed (see Fixes tag). There is still one scenario where those conditions
> are not present, but that the VSIE processor returns with effectively rc=0,
> resulting in additional (and unnecessary) guest work to be performed.
> 
> For this case, rewind the guest PSW as we do in the other non-error exits.
> 
> Fixes: 33a729a1770b ("KVM: s390: vsie: retry SIE instruction on host intercepts")
> Signed-off-by: Eric Farman <farman@linux.ibm.com>

This is purely cosmetic to have all instances look the same, right?

  reply	other threads:[~2026-01-05 12:41 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-17  3:01 [PATCH] KVM: s390: vsie: retry SIE when unable to get vsie_page Eric Farman
2026-01-05 12:41 ` Janosch Frank [this message]
2026-01-05 15:46   ` Eric Farman
2026-01-14  9:50     ` Claudio Imbrenda
2026-01-15 21:17       ` Eric Farman
2026-01-16 15:45         ` Eric Farman
2026-01-16 17:01           ` Claudio Imbrenda
2026-01-19 14:49           ` Janosch Frank
2026-01-20 15:23             ` Eric Farman
2026-01-14  9:39 ` Christoph Schlameuss

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