From: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
[ Upstream commit 600b9c919c2f4d07a7bf67864086aa3432224674 ]
We are about to group the handling of all capabilities (features
and errata workarounds). This patch open codes the wrapper routines
to make it easier to merge the handling.
Reviewed-by: Dave Martin <dave.martin@xxxxxxx>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/kernel/cpufeature.c | 58 ++++++++++++-----------------------------
1 file changed, 18 insertions(+), 40 deletions(-)
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -485,7 +485,8 @@ static void __init init_cpu_ftr_reg(u32
}
extern const struct arm64_cpu_capabilities arm64_errata[];
-static void update_cpu_errata_workarounds(void);
+static void update_cpu_capabilities(const struct arm64_cpu_capabilities *caps,
+ u16 scope_mask, const char *info);
void __init init_cpu_features(struct cpuinfo_arm64 *info)
{
@@ -528,7 +529,8 @@ void __init init_cpu_features(struct cpu
* Run the errata work around checks on the boot CPU, once we have
* initialised the cpu feature infrastructure.
*/
- update_cpu_errata_workarounds();
+ update_cpu_capabilities(arm64_errata, SCOPE_ALL,
+ "enabling workaround for");
}
static void update_cpu_ftr_reg(struct arm64_ftr_reg *reg, u64 new)
@@ -1312,33 +1314,6 @@ verify_local_elf_hwcaps(const struct arm
}
}
-static void verify_local_cpu_features(void)
-{
- if (!__verify_local_cpu_caps(arm64_features, SCOPE_ALL))
- cpu_die_early();
-}
-
-/*
- * The CPU Errata work arounds are detected and applied at boot time
- * and the related information is freed soon after. If the new CPU requires
- * an errata not detected at boot, fail this CPU.
- */
-static void verify_local_cpu_errata_workarounds(void)
-{
- if (!__verify_local_cpu_caps(arm64_errata, SCOPE_ALL))
- cpu_die_early();
-}
-
-static void update_cpu_errata_workarounds(void)
-{
- update_cpu_capabilities(arm64_errata, SCOPE_ALL,
- "enabling workaround for");
-}
-
-static void __init enable_errata_workarounds(void)
-{
- enable_cpu_capabilities(arm64_errata, SCOPE_ALL);
-}
/*
* Run through the enabled system capabilities and enable() it on this CPU.
@@ -1350,8 +1325,15 @@ static void __init enable_errata_workaro
*/
static void verify_local_cpu_capabilities(void)
{
- verify_local_cpu_errata_workarounds();
- verify_local_cpu_features();
+ /*
+ * The CPU Errata work arounds are detected and applied at boot time
+ * and the related information is freed soon after. If the new CPU
+ * requires an errata not detected at boot, fail this CPU.
+ */
+ if (!__verify_local_cpu_caps(arm64_errata, SCOPE_ALL))
+ cpu_die_early();
+ if (!__verify_local_cpu_caps(arm64_features, SCOPE_ALL))
+ cpu_die_early();
verify_local_elf_hwcaps(arm64_elf_hwcaps);
if (system_supports_32bit_el0())
verify_local_elf_hwcaps(compat_elf_hwcaps);
@@ -1372,17 +1354,12 @@ void check_local_cpu_capabilities(void)
* advertised capabilities.
*/
if (!sys_caps_initialised)
- update_cpu_errata_workarounds();
+ update_cpu_capabilities(arm64_errata, SCOPE_ALL,
+ "enabling workaround for");
else
verify_local_cpu_capabilities();
}
-static void __init setup_feature_capabilities(void)
-{
- update_cpu_capabilities(arm64_features, SCOPE_ALL, "detected:");
- enable_cpu_capabilities(arm64_features, SCOPE_ALL);
-}
-
DEFINE_STATIC_KEY_FALSE(arm64_const_caps_ready);
EXPORT_SYMBOL(arm64_const_caps_ready);
@@ -1405,8 +1382,9 @@ void __init setup_cpu_features(void)
int cls;
/* Set the CPU feature capabilies */
- setup_feature_capabilities();
- enable_errata_workarounds();
+ update_cpu_capabilities(arm64_features, SCOPE_ALL, "detected:");
+ enable_cpu_capabilities(arm64_features, SCOPE_ALL);
+ enable_cpu_capabilities(arm64_errata, SCOPE_ALL);
mark_const_caps_ready();
setup_elf_hwcaps(arm64_elf_hwcaps);
