linux-kernel - Re: [PATCH v3 04/15] KVM: arm64: Fixup hyp stage-1 refcount

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20211209110930.GA1912@willie-the-truck>
Date:   Thu, 9 Dec 2021 11:09:31 +0000
From:   Will Deacon <will@...nel.org>
To:     Quentin Perret <qperret@...gle.com>
Cc:     Marc Zyngier <maz@...nel.org>, James Morse <james.morse@....com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
        linux-kernel@...r.kernel.org, kernel-team@...roid.com
Subject: Re: [PATCH v3 04/15] KVM: arm64: Fixup hyp stage-1 refcount

On Wed, Dec 01, 2021 at 05:03:58PM +0000, Quentin Perret wrote:
> In nVHE-protected mode, the hyp stage-1 page-table refcount is broken
> due to the lack of refcount support in the early allocator. Fix-up the
> refcount in the finalize walker, once the 'hyp_vmemmap' is up and running.
> 
> Signed-off-by: Quentin Perret <qperret@...gle.com>
> ---
>  arch/arm64/kvm/hyp/nvhe/setup.c | 21 ++++++++++++++++-----
>  1 file changed, 16 insertions(+), 5 deletions(-)

Acked-by: Will Deacon <will@...nel.org>

Will