linux-kernel - [PATCH V2] irqchip/gic-v4.1: Replace GIC version with ID_AA64PFR0_EL1_GIC

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Message-Id: <20240802085601.1824057-1-anshuman.khandual@arm.com>
Date: Fri,  2 Aug 2024 14:26:01 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: linux-arm-kernel@...ts.infradead.org
Cc: Anshuman Khandual <anshuman.khandual@....com>,
	Marc Zyngier <maz@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	linux-kernel@...r.kernel.org,
	Zenghui Yu <yuzenghui@...wei.com>
Subject: [PATCH V2] irqchip/gic-v4.1: Replace GIC version with ID_AA64PFR0_EL1_GIC_V4P1

Replace open encoding for GIC version code with ID_AA64PFR0_EL1_GIC_V4P1 in
gic_cpuif_has_vsgi().

Cc: Marc Zyngier <maz@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Reviewed-by: Zenghui Yu <yuzenghui@...wei.com>
Acked-by: Marc Zyngier <maz@...nel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
This patch applies on v6.11-rc1.

ID_AA64PFR0_EL1.GIC field value for V4P1 has been fixed via a recent
commit f3dfcd25455b ("arm64/sysreg: Correct the values for GICv4.1").

Changes in V2:

- Updated the subject line per Marc

Changes in V1:

https://lore.kernel.org/all/20240724054623.667595-1-anshuman.khandual@arm.com/

 drivers/irqchip/irq-gic-v4.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c
index ca32ac19d284..58c28895f8c4 100644
--- a/drivers/irqchip/irq-gic-v4.c
+++ b/drivers/irqchip/irq-gic-v4.c
@@ -97,7 +97,7 @@ bool gic_cpuif_has_vsgi(void)
 
 	fld = cpuid_feature_extract_unsigned_field(reg, ID_AA64PFR0_EL1_GIC_SHIFT);
 
-	return fld >= 0x3;
+	return fld >= ID_AA64PFR0_EL1_GIC_V4P1;
 }
 #else
 bool gic_cpuif_has_vsgi(void)
-- 
2.30.2