release/5.2.28/arm64-Brahma-B53-is-SSB-and-spectre-v2-safe.patch

From eb0a6840cb4679ae2a43dec69819fea52451d46f Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Thu, 31 Oct 2019 14:47:24 -0700
Subject: [PATCH] arm64: Brahma-B53 is SSB and spectre v2 safe

commit e059770cb1cdfbcbe3f1748f76005861cc79dd1a upstream.

Add the Brahma-B53 CPU (all versions) to the whitelists of CPUs for the
SSB and spectre v2 mitigations.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index 6d4b2802cf7e..7b6278d67a54 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -488,6 +488,7 @@ static const struct midr_range arm64_ssb_cpus[] = {
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_A35),
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_A53),
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
+	MIDR_ALL_VERSIONS(MIDR_BRAHMA_B53),
 	{},
 };
 
@@ -561,6 +562,7 @@ 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_BRAHMA_B53),
 	{ /* sentinel */ }
 };
 
-- 
2.7.4