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Tue, 05 Aug 2025 06:56:22 -0700 (PDT) Date: Tue, 5 Aug 2025 14:56:17 +0100 In-Reply-To: <20250805135617.831971-1-tabba@google.com> Mime-Version: 1.0 References: <20250805135617.831971-1-tabba@google.com> X-Mailer: git-send-email 2.50.1.565.gc32cd1483b-goog Message-ID: <20250805135617.831971-5-tabba@google.com> Subject: [PATCH v1 4/4] arm64: vgic-v2: Fix guest endianness check in hVHE mode From: Fuad Tabba To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: maz@kernel.org, oliver.upton@linux.dev, will@kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, vdonnefort@google.com, qperret@google.com, sebastianene@google.com, keirf@google.com, smostafa@google.com, tabba@google.com Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250805_065624_262491_17D59D65 X-CRM114-Status: GOOD ( 12.37 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In hVHE when running at the hypervisor, SCTLR_EL1 refers to the hypervisor's System Control Register rather than the guest's. Make sure to access the guest's register to determine its endianness. Signed-off-by: Fuad Tabba --- arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c b/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c index 87a54375bd6e..78579b31a420 100644 --- a/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c +++ b/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c @@ -20,7 +20,7 @@ static bool __is_be(struct kvm_vcpu *vcpu) if (vcpu_mode_is_32bit(vcpu)) return !!(read_sysreg_el2(SYS_SPSR) & PSR_AA32_E_BIT); - return !!(read_sysreg(SCTLR_EL1) & SCTLR_ELx_EE); + return !!(read_sysreg_el1(SYS_SCTLR) & SCTLR_ELx_EE); } /* -- 2.50.1.565.gc32cd1483b-goog