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Subject[PATCH v3 09/22] arm64: capabilities: Split the processing of errata work arounds
Date
Right now we run through the errata workarounds check on all boot
active CPUs, with SCOPE_ALL. This doesn't help with detecting the
errata's with a SYSTEM_SCOPE. While nobody uses it, let us clean
this up in preparation for merging capability handling.

So, we run the checks with SCOPE_LOCAL_CPU on all CPUs and SCOPE_SYSTEM
checks are run only once after all the boot time CPUs are active.

Cc: Dave Martin <dave.martin@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
arch/arm64/kernel/cpufeature.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 9f52678a4df1..a6e124063e21 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -554,7 +554,7 @@ void __init init_cpu_features(struct cpuinfo_arm64 *info)
* Run the errata work around checks on the boot CPU, once we have
* initialised the cpu feature infrastructure.
*/
- update_cpu_capabilities(arm64_errata, SCOPE_ALL,
+ update_cpu_capabilities(arm64_errata, SCOPE_LOCAL_CPU,
"enabling workaround for");
}

@@ -1416,7 +1416,7 @@ void check_local_cpu_capabilities(void)
* advertised capabilities.
*/
if (!sys_caps_initialised)
- update_cpu_capabilities(arm64_errata, SCOPE_ALL,
+ update_cpu_capabilities(arm64_errata, SCOPE_LOCAL_CPU,
"enabling workaround for");
else
verify_local_cpu_capabilities();
@@ -1446,6 +1446,8 @@ void __init setup_cpu_features(void)
/* Set the CPU feature capabilies */
update_cpu_capabilities(arm64_features, SCOPE_ALL,
"detected feature:");
+ update_cpu_capabilities(arm64_errata, SCOPE_SYSTEM,
+ "enabling workaround for");
enable_cpu_capabilities(arm64_features, SCOPE_ALL);
enable_cpu_capabilities(arm64_errata, SCOPE_ALL);
mark_const_caps_ready();
--
2.14.3
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