From: Catalin Marinas <catalin.marinas@arm.com>
To: Fuad Tabba <fuad.tabba@linux.dev>
Cc: Marc Zyngier <maz@kernel.org>, Oliver Upton <oupton@kernel.org>,
kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Steffen Eiden <seiden@linux.ibm.com>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Steven Price <steven.price@arm.com>,
Yang Shi <yang@os.amperecomputing.com>,
David Hildenbrand <david@kernel.org>,
Lorenzo Stoakes <ljs@kernel.org>, Fuad Tabba <tabba@google.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 4/4] arm64: mte: Add mte_clear_folio_tags()
Date: Thu, 29 Oct 2026 22:05:11 +0000 [thread overview]
Message-ID: <auPDF0KIpU_WjK_k@arm.com> (raw)
In-Reply-To: <20261021110700.493315-5-fuad.tabba@linux.dev>
On Wed, Oct 21, 2026 at 12:07:00PM +0100, Fuad Tabba wrote:
> mte_sync_tags(), sanitise_mte_tags() and kvm_vm_ioctl_mte_copy_tags()
> each open-code the loop that clears the tags of every page in a hugetlb
> folio. Add mte_clear_folio_tags() and use it in all three.
> kvm_vm_ioctl_mte_copy_tags() then tests for hugetlb first, as it does
> where it sets the tagged flag below.
>
> No functional change intended.
>
> Suggested-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
> Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
prev parent reply other threads:[~2026-10-29 22:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-21 11:06 [PATCH v2 0/4] KVM: arm64: Fix stale MTE tags reaching a guest Fuad Tabba
2026-10-21 11:06 ` [PATCH v2 1/4] KVM: arm64: Clear the whole hugetlb folio when sanitising MTE tags Fuad Tabba
2026-10-29 21:44 ` Catalin Marinas
2026-10-21 11:06 ` [PATCH v2 2/4] KVM: arm64: Clear the whole hugetlb folio when storing " Fuad Tabba
2026-10-29 22:01 ` Catalin Marinas
2026-10-21 11:06 ` [PATCH v2 3/4] KVM: arm64: Sanitise MTE tags when a permission fault installs a mapping Fuad Tabba
2026-10-29 22:04 ` Catalin Marinas
2026-10-21 11:07 ` [PATCH v2 4/4] arm64: mte: Add mte_clear_folio_tags() Fuad Tabba
2026-10-21 12:28 ` Lorenzo Stoakes (ARM)
2026-10-29 22:05 ` Catalin Marinas [this message]
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