From: Ard Biesheuvel <ardb@kernel.org>
To: linux-arm-kernel@lists.infradead.org, linux@armlinux.org.uk
Cc: arnd@arndb.de, linus.walleij@linaro.org,
Ard Biesheuvel <ardb@kernel.org>
Subject: [PATCH 1/6] ARM: spectre-bhb: enable for Cortex-A15
Date: Mon, 28 Mar 2022 15:47:09 +0200 [thread overview]
Message-ID: <20220328134714.205342-2-ardb@kernel.org> (raw)
In-Reply-To: <20220328134714.205342-1-ardb@kernel.org>
The Spectre-BHB mitigations were inadvertently left disabled for
Cortex-A15, due to the fact that cpu_v7_bugs_init() is not called in
that case. So fix that.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/arm/mm/proc-v7-bugs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c
index 06dbfb968182..fb9f3eb6bf48 100644
--- a/arch/arm/mm/proc-v7-bugs.c
+++ b/arch/arm/mm/proc-v7-bugs.c
@@ -288,6 +288,7 @@ void cpu_v7_ca15_ibe(void)
{
if (check_spectre_auxcr(this_cpu_ptr(&spectre_warned), BIT(0)))
cpu_v7_spectre_v2_init();
+ cpu_v7_spectre_bhb_init();
}
void cpu_v7_bugs_init(void)
--
2.30.2
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next prev parent reply other threads:[~2022-03-28 13:53 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-28 13:47 [PATCH 0/6] ARM: spectre-bhb fixes and tweaks Ard Biesheuvel
2022-03-28 13:47 ` Ard Biesheuvel [this message]
2022-05-24 14:50 ` [PATCH 1/6] ARM: spectre-bhb: enable for Cortex-A15 Jon Hunter
2022-05-24 15:21 ` Ard Biesheuvel
2022-05-24 16:06 ` Jon Hunter
2022-05-24 17:03 ` Russell King (Oracle)
2022-05-24 17:49 ` Jon Hunter
2022-05-25 7:09 ` Ard Biesheuvel
2022-05-25 10:48 ` Jon Hunter
2022-05-25 10:52 ` Ard Biesheuvel
2022-06-07 14:30 ` Jon Hunter
2022-06-07 14:32 ` Ard Biesheuvel
2022-06-07 14:35 ` Jon Hunter
2022-06-07 14:39 ` Ard Biesheuvel
2022-03-28 13:47 ` [PATCH 2/6] ARM: spectre-bhb: fix loop8 sequence for Thumb2 Ard Biesheuvel
2022-03-28 13:47 ` [PATCH 3/6] ARM: spectre-bhb: simplify BPIALL vector macro Ard Biesheuvel
2022-03-28 13:47 ` [PATCH 4/6] ARM: spectre-bhb: use local DSB and elide ISB in loop8 sequence Ard Biesheuvel
2022-03-28 13:47 ` [PATCH 5/6] ARM: spectre-bhb: avoid cross-subsection jump using a numbered label Ard Biesheuvel
2022-03-31 14:07 ` Russell King (Oracle)
2022-03-31 16:22 ` Ard Biesheuvel
2022-03-28 13:47 ` [PATCH 6/6] ARM: spectre-bhb: rely on linker to emit cross-section literal loads Ard Biesheuvel
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