[v9] KVM: arm64: Implement support for SME

[PATCH v9 01/30] arm64/sysreg: Update SMIDR_EL1 to DDI0601 2025-06

Posted by Mark Brown 1 month, 2 weeks ago

Update the definiton of SMIDR_EL1 in the sysreg definition to reflect the
information in DD0601 2025-06. This includes somewhat more generic ways of
describing the sharing of SMCUs, more information on supported priorities
and provides additional resolution for describing affinity groups.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 arch/arm64/tools/sysreg | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 8921b51866d6..6bf143bfe57c 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -3660,11 +3660,15 @@ Field	3:0	BS
 EndSysreg
 
 Sysreg	SMIDR_EL1	3	1	0	0	6
-Res0	63:32
+Res0	63:60
+Field	59:56	NSMC
+Field	55:52	HIP
+Field	51:32	AFFINITY2
 Field	31:24	IMPLEMENTER
 Field	23:16	REVISION
 Field	15	SMPS
-Res0	14:12
+Field	14:13	SH
+Res0	12
 Field	11:0	AFFINITY
 EndSysreg
 

-- 
2.47.3

Re: [PATCH v9 01/30] arm64/sysreg: Update SMIDR_EL1 to DDI0601 2025-06

Posted by Alex Bennée 5 days, 18 hours ago

Mark Brown <broonie@kernel.org> writes:

> Update the definiton of SMIDR_EL1 in the sysreg definition to reflect the
> information in DD0601 2025-06. This includes somewhat more generic ways of
> describing the sharing of SMCUs, more information on supported priorities
> and provides additional resolution for describing affinity groups.
>
> Signed-off-by: Mark Brown <broonie@kernel.org>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

-- 
Alex Bennée
Virtualisation Tech Lead @ Linaro

Re: [PATCH v9 01/30] arm64/sysreg: Update SMIDR_EL1 to DDI0601 2025-06

Posted by Fuad Tabba 1 month ago

On Tue, 23 Dec 2025 at 01:21, Mark Brown <broonie@kernel.org> wrote:
>
> Update the definiton of SMIDR_EL1 in the sysreg definition to reflect the

nit: definiton->definition

> information in DD0601 2025-06. This includes somewhat more generic ways of
> describing the sharing of SMCUs, more information on supported priorities
> and provides additional resolution for describing affinity groups.
>
> Signed-off-by: Mark Brown <broonie@kernel.org>

It matches the spec.

Reviewed-by: Fuad Tabba <tabba@google.com>

Cheers,
/fuad



> ---
>  arch/arm64/tools/sysreg | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
> index 8921b51866d6..6bf143bfe57c 100644
> --- a/arch/arm64/tools/sysreg
> +++ b/arch/arm64/tools/sysreg
> @@ -3660,11 +3660,15 @@ Field   3:0     BS
>  EndSysreg
>
>  Sysreg SMIDR_EL1       3       1       0       0       6
> -Res0   63:32
> +Res0   63:60
> +Field  59:56   NSMC
> +Field  55:52   HIP
> +Field  51:32   AFFINITY2
>  Field  31:24   IMPLEMENTER
>  Field  23:16   REVISION
>  Field  15      SMPS
> -Res0   14:12
> +Field  14:13   SH
> +Res0   12
>  Field  11:0    AFFINITY
>  EndSysreg
>
>
> --
> 2.47.3
>