From 27a2c36c9538c7e5536a1b20fd74f0fc911d7950 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 8 May 2024 05:43:39 +0200
Subject: Merging upstream version 4.19.269.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/arm64/kernel/cpufeature.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'arch/arm64/kernel/cpufeature.c')

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 03b0fdcca..d7e73a796 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -31,6 +31,7 @@
 #include <asm/cpufeature.h>
 #include <asm/cpu_ops.h>
 #include <asm/fpsimd.h>
+#include <asm/hwcap.h>
 #include <asm/mmu_context.h>
 #include <asm/processor.h>
 #include <asm/sysreg.h>
@@ -1154,6 +1155,14 @@ static void cpu_enable_ssbs(const struct arm64_cpu_capabilities *__unused)
 }
 #endif /* CONFIG_ARM64_SSBD */
 
+static void elf_hwcap_fixup(void)
+{
+#ifdef CONFIG_ARM64_ERRATUM_1742098
+	if (cpus_have_const_cap(ARM64_WORKAROUND_1742098))
+		compat_elf_hwcap2 &= ~COMPAT_HWCAP2_AES;
+#endif /* ARM64_ERRATUM_1742098 */
+}
+
 static const struct arm64_cpu_capabilities arm64_features[] = {
 	{
 		.desc = "GIC system register CPU interface",
@@ -1802,8 +1811,10 @@ void __init setup_cpu_features(void)
 	mark_const_caps_ready();
 	setup_elf_hwcaps(arm64_elf_hwcaps);
 
-	if (system_supports_32bit_el0())
+	if (system_supports_32bit_el0()) {
 		setup_elf_hwcaps(compat_elf_hwcaps);
+		elf_hwcap_fixup();
+	}
 
 	if (system_uses_ttbr0_pan())
 		pr_info("emulated: Privileged Access Never (PAN) using TTBR0_EL1 switching\n");
-- 
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