From: Catalin Marinas <catalin.marinas@arm.com>
To: Will Deacon <will@kernel.org>, linux-arm-kernel@lists.infradead.org
Cc: Marc Zyngier <maz@kernel.org>,
linux-arch@vger.kernel.org, kernel-team@android.com,
Jade Alglave <jade.alglave@arm.com>,
kvmarm@lists.cs.columbia.edu,
Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Subject: Re: (subset) [PATCH 0/4] Fix racing TLBI with ASID/VMID reallocation
Date: Fri, 6 Aug 2021 17:04:27 +0100 [thread overview]
Message-ID: <162826584979.7468.15328966135917852100.b4-ty@arm.com> (raw)
In-Reply-To: <20210806113109.2475-1-will@kernel.org>
On Fri, 6 Aug 2021 12:31:03 +0100, Will Deacon wrote:
> While reviewing Shameer's reworked VMID allocator [1] and discussing
> with Marc, we spotted a race between TLB invalidation (which typically
> takes an ASID or VMID argument) and reallocation of ASID/VMID for the
> context being targetted.
>
> The first patch spells out an example with try_to_unmap_one() in a
> comment, which Catalin has kindly modelled in TLA+ at [2].
>
> [...]
Applied to arm64 (for-next/misc), thanks!
[1/4] arm64: mm: Fix TLBI vs ASID rollover
https://git.kernel.org/arm64/c/5e10f9887ed8
--
Catalin
next prev parent reply other threads:[~2021-08-06 16:04 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-06 11:31 [PATCH 0/4] Fix racing TLBI with ASID/VMID reallocation Will Deacon
2021-08-06 11:31 ` [PATCH 1/4] arm64: mm: Fix TLBI vs ASID rollover Will Deacon
2021-08-06 11:59 ` Catalin Marinas
2021-08-06 12:42 ` Will Deacon
2021-08-06 12:49 ` Catalin Marinas
2021-08-06 11:31 ` [PATCH] of: restricted dma: Don't fail device probe on rmem init failure Will Deacon
2021-08-06 11:34 ` Will Deacon
2021-08-06 11:31 ` [PATCH 2/4] KVM: arm64: Move kern_hyp_va() usage in __load_guest_stage2() into the callers Will Deacon
2021-08-06 11:31 ` [PATCH 3/4] KVM: arm64: Convert the host S2 over to __load_guest_stage2() Will Deacon
2021-08-06 13:40 ` Quentin Perret
2021-08-20 8:01 ` Marc Zyngier
2021-08-20 9:08 ` Quentin Perret
2021-08-06 11:31 ` [PATCH 4/4] KVM: arm64: Upgrade VMID accesses to {READ,WRITE}_ONCE Will Deacon
2021-08-06 14:24 ` Quentin Perret
2021-08-06 16:04 ` Catalin Marinas [this message]
2021-09-10 9:06 ` [PATCH 0/4] Fix racing TLBI with ASID/VMID reallocation Shameerali Kolothum Thodi
2021-09-10 9:45 ` Catalin Marinas
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