diff options
| author | Will Deacon <will.deacon@arm.com> | 2019-08-05 18:13:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-11 12:20:42 +0200 |
| commit | 375dddef573abace1fd1449bf471e47975235c71 (patch) | |
| tree | 263d19e6d0046eb8f12169b37a09ff095995eb45 /include/linux | |
| parent | d63f4f2588b2a87ac763de9a427816301c5b1caf (diff) | |
arm64: cpufeature: Fix CTR_EL0 field definitions
commit be68a8aaf925aaf35574260bf820bb09d2f9e07f upstream.
Our field definitions for CTR_EL0 suffer from a number of problems:
- The IDC and DIC fields are missing, which causes us to enable CTR
trapping on CPUs with either of these returning non-zero values.
- The ERG is FTR_LOWER_SAFE, whereas it should be treated like CWG as
FTR_HIGHER_SAFE so that applications can use it to avoid false sharing.
- [nit] A RES1 field is described as "RAO"
This patch updates the CTR_EL0 field definitions to fix these issues.
Cc: <stable@vger.kernel.org> # 4.4.y only
Cc: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions