linux-kernel - [PATCH 2/8] dt-bindings: apple,aic: Add CPU PMU per-cpu pseudo-interrupts

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20211113115429.4027571-3-maz@kernel.org>
Date:   Sat, 13 Nov 2021 11:54:23 +0000
From:   Marc Zyngier <maz@...nel.org>
To:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Mark Rutland <mark.rutland@....com>, Will Deacon <will@...nel.org>,
        Hector Martin <marcan@...can.st>,
        Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Rob Herring <robh+dt@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 2/8] dt-bindings: apple,aic: Add CPU PMU per-cpu pseudo-interrupts

Advertise the two pseudo-interrupts that tied to the two PMU
flavours present in the Apple M1 SoC.

We choose the expose two different pseudo-interrupts to the OS
as the e-core PMU is obviously different from the p-core one,
effectively presenting two different devices.

Signed-off-by: Marc Zyngier <maz@...nel.org>
---
 .../devicetree/bindings/interrupt-controller/apple,aic.yaml     | 2 ++
 include/dt-bindings/interrupt-controller/apple-aic.h            | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml b/Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
index cf6c091a07b1..b95e41816953 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
@@ -56,6 +56,8 @@ properties:
           - 1: virtual HV timer
           - 2: physical guest timer
           - 3: virtual guest timer
+          - 4: 'efficient' CPU PMU
+          - 5: 'performance' CPU PMU
 
       The 3rd cell contains the interrupt flags. This is normally
       IRQ_TYPE_LEVEL_HIGH (4).
diff --git a/include/dt-bindings/interrupt-controller/apple-aic.h b/include/dt-bindings/interrupt-controller/apple-aic.h
index 604f2bb30ac0..bf3aac0e5491 100644
--- a/include/dt-bindings/interrupt-controller/apple-aic.h
+++ b/include/dt-bindings/interrupt-controller/apple-aic.h
@@ -11,5 +11,7 @@
 #define AIC_TMR_HV_VIRT		1
 #define AIC_TMR_GUEST_PHYS	2
 #define AIC_TMR_GUEST_VIRT	3
+#define AIC_CPU_PMU_E		4
+#define AIC_CPU_PMU_P		5
 
 #endif
-- 
2.30.2