linux-kernel - [PATCH V3 2/2] KVM: selftests: Change MDSCR_EL1 register holding variables as uint64

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Message-Id: <20250610053128.4118784-3-anshuman.khandual@arm.com>
Date: Tue, 10 Jun 2025 11:01:28 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: linux-arm-kernel@...ts.infradead.org
Cc: Anshuman Khandual <anshuman.khandual@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Ada Couprie Diaz <ada.coupriediaz@....com>,
	linux-kernel@...r.kernel.org,
	Marc Zyngier <maz@...nel.org>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Joey Gouly <joey.gouly@....com>,
	kvm@...r.kernel.org,
	kvmarm@...ts.linux.dev,
	linux-kselftest@...r.kernel.org
Subject: [PATCH V3 2/2] KVM: selftests: Change MDSCR_EL1 register holding variables as uint64_t

Change MDSCR_EL1 register holding local variables as uint64_t that reflects
its true register width as well.

Cc: Marc Zyngier <maz@...nel.org>
Cc: Oliver Upton <oliver.upton@...ux.dev>
Cc: Joey Gouly <joey.gouly@....com>
Cc: kvm@...r.kernel.org
Cc: kvmarm@...ts.linux.dev
Cc: linux-kernel@...r.kernel.org
Cc: linux-kselftest@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Reviewed-by: Ada Couprie Diaz <ada.coupriediaz@....com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
 tools/testing/selftests/kvm/arm64/debug-exceptions.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/arm64/debug-exceptions.c b/tools/testing/selftests/kvm/arm64/debug-exceptions.c
index c7fb55c9135b..e34963956fbc 100644
--- a/tools/testing/selftests/kvm/arm64/debug-exceptions.c
+++ b/tools/testing/selftests/kvm/arm64/debug-exceptions.c
@@ -140,7 +140,7 @@ static void enable_os_lock(void)
 
 static void enable_monitor_debug_exceptions(void)
 {
-	uint32_t mdscr;
+	uint64_t mdscr;
 
 	asm volatile("msr daifclr, #8");
 
@@ -223,7 +223,7 @@ void install_hw_bp_ctx(uint8_t addr_bp, uint8_t ctx_bp, uint64_t addr,
 
 static void install_ss(void)
 {
-	uint32_t mdscr;
+	uint64_t mdscr;
 
 	asm volatile("msr daifclr, #8");
 
-- 
2.25.1