From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Branislav Rankov <Branislav.Rankov@arm.com>,
Marco Elver <elver@google.com>,
Andrey Konovalov <andreyknvl@google.com>,
Evgenii Stepanov <eugenis@google.com>,
linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
Alexander Potapenko <glider@google.com>,
linux-arm-kernel@lists.infradead.org,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Will Deacon <will@kernel.org>, Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [PATCH v3 3/4] arm64: mte: Enable async tag check fault
Date: Mon, 18 Jan 2021 15:40:55 +0000 [thread overview]
Message-ID: <330506b9-b7e9-8fda-889a-0827229e1a3d@arm.com> (raw)
In-Reply-To: <c076b1cc-8ce5-91a0-9957-7dcd78026b18@arm.com>
On 1/18/21 1:37 PM, Vincenzo Frascino wrote:
>> If a speculated load is allowed to update this reg, we'd probably need an
>> ISB+DSB (I don't think it does, something to check with the architects).
>>
> I will check this with the architects and let you know.
I spoke to the architects and no speculative load can update TFSR_EL1.
--
Regards,
Vincenzo
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WARNING: multiple messages have this Message-ID (diff)
From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
Will Deacon <will@kernel.org>, Dmitry Vyukov <dvyukov@google.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Alexander Potapenko <glider@google.com>,
Marco Elver <elver@google.com>,
Evgenii Stepanov <eugenis@google.com>,
Branislav Rankov <Branislav.Rankov@arm.com>,
Andrey Konovalov <andreyknvl@google.com>
Subject: Re: [PATCH v3 3/4] arm64: mte: Enable async tag check fault
Date: Mon, 18 Jan 2021 15:40:55 +0000 [thread overview]
Message-ID: <330506b9-b7e9-8fda-889a-0827229e1a3d@arm.com> (raw)
In-Reply-To: <c076b1cc-8ce5-91a0-9957-7dcd78026b18@arm.com>
On 1/18/21 1:37 PM, Vincenzo Frascino wrote:
>> If a speculated load is allowed to update this reg, we'd probably need an
>> ISB+DSB (I don't think it does, something to check with the architects).
>>
> I will check this with the architects and let you know.
I spoke to the architects and no speculative load can update TFSR_EL1.
--
Regards,
Vincenzo
next prev parent reply other threads:[~2021-01-18 15:38 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-15 12:00 [PATCH v3 0/4] arm64: ARMv8.5-A: MTE: Add async mode support Vincenzo Frascino
2021-01-15 12:00 ` Vincenzo Frascino
2021-01-15 12:00 ` [PATCH v3 1/4] kasan, arm64: Add KASAN light mode Vincenzo Frascino
2021-01-15 12:00 ` Vincenzo Frascino
2021-01-15 15:08 ` Mark Rutland
2021-01-15 15:08 ` Mark Rutland
2021-01-16 13:47 ` Vincenzo Frascino
2021-01-16 13:47 ` Vincenzo Frascino
2021-01-16 14:09 ` Andrey Konovalov
2021-01-16 14:09 ` Andrey Konovalov
2021-01-18 10:24 ` Mark Rutland
2021-01-18 10:24 ` Mark Rutland
2021-01-15 18:59 ` Andrey Konovalov
2021-01-15 18:59 ` Andrey Konovalov
2021-01-16 13:40 ` Vincenzo Frascino
2021-01-16 13:40 ` Vincenzo Frascino
2021-01-16 13:59 ` Andrey Konovalov
2021-01-16 13:59 ` Andrey Konovalov
2021-01-16 14:06 ` Vincenzo Frascino
2021-01-16 14:06 ` Vincenzo Frascino
2021-01-15 12:00 ` [PATCH v3 2/4] arm64: mte: Add asynchronous mode support Vincenzo Frascino
2021-01-15 12:00 ` Vincenzo Frascino
2021-01-15 15:13 ` Mark Rutland
2021-01-15 15:13 ` Mark Rutland
2021-01-16 13:49 ` Vincenzo Frascino
2021-01-16 13:49 ` Vincenzo Frascino
2021-01-15 12:00 ` [PATCH v3 3/4] arm64: mte: Enable async tag check fault Vincenzo Frascino
2021-01-15 12:00 ` Vincenzo Frascino
2021-01-15 15:37 ` Mark Rutland
2021-01-15 15:37 ` Mark Rutland
2021-01-18 12:57 ` Catalin Marinas
2021-01-18 12:57 ` Catalin Marinas
2021-01-18 13:37 ` Vincenzo Frascino
2021-01-18 13:37 ` Vincenzo Frascino
2021-01-18 14:14 ` Mark Rutland
2021-01-18 14:14 ` Mark Rutland
2021-01-18 14:48 ` Vincenzo Frascino
2021-01-18 14:48 ` Vincenzo Frascino
2021-01-18 15:39 ` Vincenzo Frascino
2021-01-18 15:39 ` Vincenzo Frascino
2021-01-18 15:40 ` Vincenzo Frascino [this message]
2021-01-18 15:40 ` Vincenzo Frascino
2021-01-15 12:00 ` [PATCH v3 4/4] arm64: mte: Optimize mte_assign_mem_tag_range() Vincenzo Frascino
2021-01-15 12:00 ` Vincenzo Frascino
2021-01-15 15:45 ` Mark Rutland
2021-01-15 15:45 ` Mark Rutland
2021-01-16 14:22 ` Vincenzo Frascino
2021-01-16 14:22 ` Vincenzo Frascino
2021-01-17 12:27 ` Vincenzo Frascino
2021-01-17 12:27 ` Vincenzo Frascino
2021-01-18 10:41 ` Mark Rutland
2021-01-18 10:41 ` Mark Rutland
2021-01-18 11:00 ` Vincenzo Frascino
2021-01-18 11:00 ` Vincenzo Frascino
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