From: Marc Zyngier <maz@kernel.org>
To: Chanho Park <parkch98@gmail.com>
Cc: catalin.marinas@arm.com, will@kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm64: add Cortex-A76 to spectre v2 safe-list
Date: Mon, 13 Jan 2020 09:22:05 +0000 [thread overview]
Message-ID: <81a4e97c116e5cb4378092411069a80e@kernel.org> (raw)
In-Reply-To: <20200112151014.2593-1-parkch98@gmail.com>
On 2020-01-12 15:10, Chanho Park wrote:
> Cortex A76(Enyo) core can be added in spectre v2(CVE-2017-5715
> (Spectre,
> Variant 2, Branch Target Injection) safe list.
>
> Signed-off-by: Chanho Park <parkch98@gmail.com>
> ---
> arch/arm64/kernel/cpu_errata.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/kernel/cpu_errata.c
> b/arch/arm64/kernel/cpu_errata.c
> index 85f4bec22f6d..9895d56bf5ac 100644
> --- a/arch/arm64/kernel/cpu_errata.c
> +++ b/arch/arm64/kernel/cpu_errata.c
> @@ -546,6 +546,7 @@ static const struct midr_range
> spectre_v2_safe_list[] = {
> MIDR_ALL_VERSIONS(MIDR_CORTEX_A35),
> MIDR_ALL_VERSIONS(MIDR_CORTEX_A53),
> MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
> + MIDR_ALL_VERSIONS(MIDR_CORTEX_A76),
> MIDR_ALL_VERSIONS(MIDR_BRAHMA_B53),
> MIDR_ALL_VERSIONS(MIDR_HISI_TSV110),
> { /* sentinel */ }
Why? Doesn't Cortex-A76 already advertize ID_AA64PFR0_EL1.CSV2?
M.
--
Jazz is not dead. It just smells funny...
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prev parent reply other threads:[~2020-01-13 9:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-12 15:10 [PATCH] arm64: add Cortex-A76 to spectre v2 safe-list Chanho Park
2020-01-13 9:22 ` Marc Zyngier [this message]
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