[PATCH] arm64: cpufeature: Fix CTR_EL0 field definitions
catalin.marinas at arm.com
Mon Feb 19 09:02:30 PST 2018
On Mon, Feb 19, 2018 at 02:41:44PM +0000, Will Deacon wrote:
> 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 at vger.kernel.org>
> Cc: Shanker Donthineni <shankerd at codeaurora.org>
> Signed-off-by: Will Deacon <will.deacon at arm.com>
Queued for -rc3.
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