All of lore.kernel.org
 help / color / mirror / Atom feed
From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
	kvm@vger.kernel.org
Cc: Steffen Eiden <seiden@linux.ibm.com>,
	Joey Gouly <joey.gouly@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Oliver Upton <oupton@kernel.org>,
	Zenghui Yu <yuzenghui@huawei.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Will Deacon <will@kernel.org>, Fuad Tabba <tabba@google.com>
Subject: [PATCH v2 0/2] KVM: arm64: nv: Reduce FP/SVE overhead on exception/exception return
Date: Wed, 20 May 2026 09:50:34 +0100	[thread overview]
Message-ID: <20260520085036.541666-1-maz@kernel.org> (raw)

This is the second version of this short series optimising away a lot
of unnecessary FPSIMD/SVE context switch with NV.

* From v1 [1]:

  - New commit message on patch #2 (Mark)

  - Additional comments and WARN_ON_ONCE() (Mark)

If nobody screams, I'll stick that into -next.

Thanks,

	M.

[1] https://lore.kernel.org/r/20260512140755.3676306-1-maz@kernel.org

Marc Zyngier (2):
  KVM: arm64: nv: Track L2 to L1 exception emulation
  KVM: arm64: nv: Don't save/restore FP register during a nested ERET or
    exception

 arch/arm64/include/asm/kvm_host.h |  3 ++-
 arch/arm64/kvm/emulate-nested.c   |  4 ++++
 arch/arm64/kvm/fpsimd.c           | 23 +++++++++++++++++++++++
 3 files changed, 29 insertions(+), 1 deletion(-)

-- 
2.47.3


             reply	other threads:[~2026-05-20  8:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-20  8:50 Marc Zyngier [this message]
2026-05-20  8:50 ` [PATCH v2 1/2] KVM: arm64: nv: Track L2 to L1 exception emulation Marc Zyngier
2026-05-20  8:50 ` [PATCH v2 2/2] KVM: arm64: nv: Don't save/restore FP register during a nested ERET or exception Marc Zyngier
2026-05-20 11:02   ` Joey Gouly
2026-05-21  6:21     ` Marc Zyngier
2026-05-20 13:02   ` Mark Rutland
2026-05-21  6:35     ` Marc Zyngier
2026-05-21  7:07 ` [PATCH v2 0/2] KVM: arm64: nv: Reduce FP/SVE overhead on exception/exception return Marc Zyngier

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=20260520085036.541666-1-maz@kernel.org \
    --to=maz@kernel.org \
    --cc=joey.gouly@arm.com \
    --cc=kvm@vger.kernel.org \
    --cc=kvmarm@lists.linux.dev \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=mark.rutland@arm.com \
    --cc=oupton@kernel.org \
    --cc=seiden@linux.ibm.com \
    --cc=suzuki.poulose@arm.com \
    --cc=tabba@google.com \
    --cc=will@kernel.org \
    --cc=yuzenghui@huawei.com \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.