From: Catalin Marinas <catalin.marinas@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Quentin Perret <qperret@google.com>,
Will Deacon <will@kernel.org>,
kernel-team@android.com, stable@vger.kernel.org
Subject: Re: [PATCH v2 1/2] arm64: Move .hyp.rodata outside of the _sdata.._edata range
Date: Mon, 2 Aug 2021 17:52:39 +0100 [thread overview]
Message-ID: <20210802165238.GL18685@arm.com> (raw)
In-Reply-To: <20210802123830.2195174-2-maz@kernel.org>
On Mon, Aug 02, 2021 at 01:38:29PM +0100, Marc Zyngier wrote:
> The HYP rodata section is currently lumped together with the BSS,
> which isn't exactly what is expected (it gets registered with
> kmemleak, for example).
>
> Move it away so that it is actually marked RO. As an added
> benefit, it isn't registered with kmemleak anymore.
>
> Fixes: 380e18ade4a5 ("KVM: arm64: Introduce a BSS section for use at Hyp")
> Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> Cc: stable@vger.kernel.org #5.13
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: kernel-team@android.com, kvm@vger.kernel.org,
Will Deacon <will@kernel.org>,
stable@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 1/2] arm64: Move .hyp.rodata outside of the _sdata.._edata range
Date: Mon, 2 Aug 2021 17:52:39 +0100 [thread overview]
Message-ID: <20210802165238.GL18685@arm.com> (raw)
In-Reply-To: <20210802123830.2195174-2-maz@kernel.org>
On Mon, Aug 02, 2021 at 01:38:29PM +0100, Marc Zyngier wrote:
> The HYP rodata section is currently lumped together with the BSS,
> which isn't exactly what is expected (it gets registered with
> kmemleak, for example).
>
> Move it away so that it is actually marked RO. As an added
> benefit, it isn't registered with kmemleak anymore.
>
> Fixes: 380e18ade4a5 ("KVM: arm64: Introduce a BSS section for use at Hyp")
> Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> Cc: stable@vger.kernel.org #5.13
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Quentin Perret <qperret@google.com>,
Will Deacon <will@kernel.org>,
kernel-team@android.com, stable@vger.kernel.org
Subject: Re: [PATCH v2 1/2] arm64: Move .hyp.rodata outside of the _sdata.._edata range
Date: Mon, 2 Aug 2021 17:52:39 +0100 [thread overview]
Message-ID: <20210802165238.GL18685@arm.com> (raw)
In-Reply-To: <20210802123830.2195174-2-maz@kernel.org>
On Mon, Aug 02, 2021 at 01:38:29PM +0100, Marc Zyngier wrote:
> The HYP rodata section is currently lumped together with the BSS,
> which isn't exactly what is expected (it gets registered with
> kmemleak, for example).
>
> Move it away so that it is actually marked RO. As an added
> benefit, it isn't registered with kmemleak anymore.
>
> Fixes: 380e18ade4a5 ("KVM: arm64: Introduce a BSS section for use at Hyp")
> Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> Cc: stable@vger.kernel.org #5.13
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-08-02 16:52 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-02 12:38 [PATCH v2 0/2] KVM: arm64: Prevent kmemleak from accessing HYP data Marc Zyngier
2021-08-02 12:38 ` Marc Zyngier
2021-08-02 12:38 ` Marc Zyngier
2021-08-02 12:38 ` [PATCH v2 1/2] arm64: Move .hyp.rodata outside of the _sdata.._edata range Marc Zyngier
2021-08-02 12:38 ` Marc Zyngier
2021-08-02 12:38 ` Marc Zyngier
2021-08-02 13:11 ` Quentin Perret
2021-08-02 13:11 ` Quentin Perret
2021-08-02 13:11 ` Quentin Perret
2021-08-02 13:20 ` Marc Zyngier
2021-08-02 13:20 ` Marc Zyngier
2021-08-02 13:20 ` Marc Zyngier
2021-08-02 13:47 ` Quentin Perret
2021-08-02 13:47 ` Quentin Perret
2021-08-02 13:47 ` Quentin Perret
2021-08-02 16:52 ` Catalin Marinas [this message]
2021-08-02 16:52 ` Catalin Marinas
2021-08-02 16:52 ` Catalin Marinas
2021-08-02 12:38 ` [PATCH v2 2/2] KVM: arm64: Unregister HYP sections from kmemleak in protected mode Marc Zyngier
2021-08-02 12:38 ` Marc Zyngier
2021-08-02 12:38 ` Marc Zyngier
2021-08-02 16:52 ` Catalin Marinas
2021-08-02 16:52 ` Catalin Marinas
2021-08-02 16:52 ` Catalin Marinas
2021-08-04 12:26 ` [PATCH v2 0/2] KVM: arm64: Prevent kmemleak from accessing HYP data Marc Zyngier
2021-08-04 12:26 ` Marc Zyngier
2021-08-04 12:26 ` Marc Zyngier
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