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Reapply "arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists"

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This reverts commit 96e027296c  It is now
fixed properly upstream so can be added back here.

Change-Id: I8428c28ccc1042eceefdf4c8f74005ad642272e3
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman
2025-05-21 05:27:10 +00:00
parent eb6f76b70c
commit 183e0245fd
1 changed files with 14 additions and 1 deletions
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15
arch/arm64/kernel/proton-pack.c
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@@ -876,6 +876,14 @@ static u8 spectre_bhb_loop_affected(void)
{
u8 k = 0;
static const struct midr_range spectre_bhb_k132_list[] = {
MIDR_ALL_VERSIONS(MIDR_CORTEX_X3),
MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V2),
};
static const struct midr_range spectre_bhb_k38_list[] = {
MIDR_ALL_VERSIONS(MIDR_CORTEX_A715),
MIDR_ALL_VERSIONS(MIDR_CORTEX_A720),
};
static const struct midr_range spectre_bhb_k32_list[] = {
MIDR_ALL_VERSIONS(MIDR_CORTEX_A78),
MIDR_ALL_VERSIONS(MIDR_CORTEX_A78AE),
@@ -889,6 +897,7 @@ static u8 spectre_bhb_loop_affected(void)
};
static const struct midr_range spectre_bhb_k24_list[] = {
MIDR_ALL_VERSIONS(MIDR_CORTEX_A76),
MIDR_ALL_VERSIONS(MIDR_CORTEX_A76AE),
MIDR_ALL_VERSIONS(MIDR_CORTEX_A77),
MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1),
MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_4XX_GOLD),
@@ -904,7 +913,11 @@ static u8 spectre_bhb_loop_affected(void)
{},
};
if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k32_list))
if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k132_list))
k = 132;
else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k38_list))
k = 38;
else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k32_list))
k = 32;
else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k24_list))
k = 24;