From: Catalin Marinas <catalin.marinas@arm.com>
To: Andrey Konovalov <andreyknvl@google.com>
Cc: Will Deacon <will.deacon@arm.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
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>,
Kevin Brodsky <kevin.brodsky@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v8 30/43] arm64: kasan: Allow enabling in-kernel MTE
Date: Thu, 5 Nov 2020 17:25:50 +0000 [thread overview]
Message-ID: <20201105172549.GE30030@gaia> (raw)
In-Reply-To: <5e3c76cac4b161fe39e3fc8ace614400bc2fb5b1.1604531793.git.andreyknvl@google.com>
On Thu, Nov 05, 2020 at 12:18:45AM +0100, Andrey Konovalov wrote:
> diff --git a/arch/arm64/kernel/mte.c b/arch/arm64/kernel/mte.c
> index 06ba6c923ab7..fcfbefcc3174 100644
> --- a/arch/arm64/kernel/mte.c
> +++ b/arch/arm64/kernel/mte.c
> @@ -121,6 +121,13 @@ void *mte_set_mem_tag_range(void *addr, size_t size, u8 tag)
> return ptr;
> }
>
> +void __init mte_init_tags(u64 max_tag)
> +{
> + /* Enable MTE Sync Mode for EL1. */
> + sysreg_clear_set(sctlr_el1, SCTLR_ELx_TCF_MASK, SCTLR_ELx_TCF_SYNC);
> + isb();
> +}
Is this going to be called on each CPU? I quickly went through the rest
of the patches and couldn't see how.
--
Catalin
next prev parent reply other threads:[~2020-11-05 17:26 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1604531793.git.andreyknvl@google.com>
[not found] ` <fc9e96c022a147120b67056525362abb43b2a0ce.1604531793.git.andreyknvl@google.com>
2020-11-05 15:59 ` [PATCH v8 28/43] arm64: mte: Reset the page tag in page->flags Catalin Marinas
2020-11-06 11:46 ` Vincenzo Frascino
[not found] ` <eb6ecc9ca7d4dfa653fce0012bd1651e157638e8.1604531793.git.andreyknvl@google.com>
2020-11-05 15:59 ` [PATCH v8 17/43] kasan, arm64: move initialization message Catalin Marinas
[not found] ` <f931d074bccbdf96ad91a34392d009fece081f59.1604531793.git.andreyknvl@google.com>
2020-11-05 16:00 ` [PATCH v8 18/43] kasan, arm64: rename kasan_init_tags and mark as __init Catalin Marinas
[not found] ` <a540ab7b9e3b908e0f4cd94c963a0cc6bb4e7d3f.1604531793.git.andreyknvl@google.com>
2020-11-05 16:57 ` [PATCH v8 29/43] arm64: mte: Add in-kernel tag fault handler Catalin Marinas
[not found] ` <5e3c76cac4b161fe39e3fc8ace614400bc2fb5b1.1604531793.git.andreyknvl@google.com>
2020-11-05 11:16 ` [PATCH v8 30/43] arm64: kasan: Allow enabling in-kernel MTE Vincenzo Frascino
2020-11-05 11:35 ` Andrey Konovalov
2020-11-05 11:42 ` Vincenzo Frascino
2020-11-05 12:14 ` Andrey Konovalov
2020-11-05 14:17 ` Vincenzo Frascino
2020-11-05 17:27 ` Andrey Konovalov
2020-11-05 17:25 ` Catalin Marinas [this message]
2020-11-05 17:29 ` Andrey Konovalov
2020-11-05 17:39 ` Catalin Marinas
2020-11-05 18:09 ` Andrey Konovalov
2020-11-06 11:11 ` Vincenzo Frascino
[not found] ` <5d9ece04df8e9d60e347a2f6f96b8c52316bfe66.1604531793.git.andreyknvl@google.com>
2020-11-05 17:30 ` [PATCH v8 32/43] arm64: mte: Switch GCR_EL1 in kernel entry and exit Catalin Marinas
2020-11-05 17:33 ` Andrey Konovalov
2020-11-05 17:42 ` Catalin Marinas
[not found] ` <12faf1f7dc2d3f672f856e141dd9542e8a7cc7c1.1604531793.git.andreyknvl@google.com>
2020-11-05 17:32 ` [PATCH v8 37/43] kasan, arm64: expand CONFIG_KASAN checks Catalin Marinas
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