From: Ada Couprie Diaz <ada.coupriediaz@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Mark Rutland <mark.rutland@arm.com>
Cc: Kiryl Shutsemau <kirill@shutemov.name>,
Will Deacon <will@kernel.org>, James Morse <james.morse@arm.com>,
Usama Arif <usama.arif@linux.dev>,
"Kiryl Shutsemau (Meta)" <kas@kernel.org>,
Marc Zyngier <maz@kernel.org>,
Doug Anderson <dianders@chromium.org>,
Breno Leitao <leitao@debian.org>,
Jinjie Ruan <ruanjinjie@huawei.com>,
Vladimir Murzin <vladimir.murzin@arm.com>,
Linus Walleij <linusw@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Huth <thuth@redhat.com>, Dawei Li <dawei.li@linux.dev>,
mrigendrachaubey <mrigendra.chaubey@gmail.com>,
kernel-team@meta.com, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org,
Ada Couprie Diaz <ada.coupriediaz@arm.com>
Subject: Re: [PATCH v2 1/2] arm64: sdei: Run the event handler on the kernel vectors
Date: Mon, 9 Nov 2026 10:57:08 +0000 [thread overview]
Message-ID: <4f143547-0e12-4dd5-9a20-32ad27642834@arm.com> (raw)
In-Reply-To: <au4eDdjGkb9tn_T_@arm.com>
Hi Catalin,
On 06/11/2026 18:35, Catalin Marinas wrote:
> Hi Ada,
>
> On Fri, Nov 06, 2026 at 04:14:56PM +0000, Ada Couprie Diaz wrote:
>> What are your thoughts ?
>> I understand that this is a completely different approach, but I feel it
>> would be more in line with what we already do for other entry paths.
> I agree moving this closer to the normal entry path makes sense and the
> PMR handling probably belongs there as well. However, I think there are
> implications for VHE (the handler runs at EL2 with VBAR_EL2) and for an
> event that interrupts a KVM world switch on the hyp vectors. I need to
> dig some more into this.
Ah, I was unsure about KVM, but that makes sense...
> In the meantime, I queued Kiryl's two patches, they're small enough for
> stable. Any entry.S rework can come on top of them for future kernels.
That sounds good, given handling KVM properly otherwise would
require more digging. I would be happy to have a look at such a rework
at some point ; I will bring it up with Mark R.
> Thanks.
Thanks,
Ada
next prev parent reply other threads:[~2026-11-09 10:57 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-05 12:08 [PATCH v2 0/2] arm64: sdei: Handle exceptions taken inside the event handler Kiryl Shutsemau
2026-11-05 12:08 ` [PATCH v2 1/2] arm64: sdei: Run the event handler on the kernel vectors Kiryl Shutsemau
2026-11-05 18:37 ` Catalin Marinas
2026-11-06 11:48 ` Kiryl Shutsemau
2026-11-06 17:38 ` Catalin Marinas
2026-11-06 16:14 ` Ada Couprie Diaz
2026-11-06 18:35 ` Catalin Marinas
2026-11-09 10:57 ` Ada Couprie Diaz [this message]
2026-11-05 12:08 ` [PATCH v2 2/2] arm64: sdei: Preserve the interrupted context's exception registers Kiryl Shutsemau
2026-11-05 15:41 ` Breno Leitao
2026-11-06 11:34 ` Kiryl Shutsemau
2026-11-06 11:53 ` Breno Leitao
2026-11-06 18:36 ` [PATCH v2 0/2] arm64: sdei: Handle exceptions taken inside the event handler Catalin Marinas
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