[PATCH 1/6] ARM: spectre-bhb: enable for Cortex-A15

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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