According to the SMCCC spec[1](7.5.2 Discovery) the ARM_SMCCC_ARCH_WORKAROUND_1 function id only returns 0, 1, and SMCCC_RET_NOT_SUPPORTED. 0 is "workaround required and safe to call this function" 1 is "workaround not required but safe to call this function" SMCCC_RET_NOT_...
KVM allows the guest to discover whether the ARCH_WORKAROUND SMCCC are implemented, and to preserve that state during migration through its firmware register interface. Add the necessary boiler plate for SMCCC_ARCH_WORKAROUND_3. Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk...
@@ -150,5 +150,146 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, #define arm_smccc_hvc_quirk(...) __arm_smccc_hvc(__VA_ARGS__) +/* SMCCC v1.1 implementation madness follows */ +#ifdef CONFIG_ARM64 + +#define SMCCC_SMC_INST "smc #0" +#define ...
+ * Fastest possible path for ARM_SMCCC_ARCH_WORKAROUND_1. + * The workaround has already been applied on the host, + * so let's quickly get back to the guest. We don't bother + * restoring x1, as it can be clobbered anyway. + */ + ldr x1, [sp] // Guest's x0 + eor...
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Non-Confidential ARM DEN 0028A (0.9.0) 1? ABOUT THIS DOCUMENT 1.1? Introduction 1.2? References 1.3? Terms and abbreviations SMC CALLING CONVENTIONS 2.1? SMC Function Identifiers 2.2? SMC32 Argument passing 2.3? SMC64 Argument passing 2.4? SIMD and Floating-point registers 2.5? SMC immediate ...
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+ case ARM_SMCCC_VERSION_FUNC_ID: val = 0; break; default: @@ -392,7 +394,7 @@ static int kvm_psci_0_1_call(struct kvm_vcpu *vcpu) * Errors: * -EINVAL: Unrecognized PSCI function */ -int kvm_psci_call(struct kvm_vcpu *vcpu) ...
Add the detection and runtime code for ARM_SMCCC_ARCH_WORKAROUND_1. It is lovely. Really. Tested-by: Ard Biesheuvel <ard.biesheu...@linaro.org> Signed-off-by: Marc Zyngier <marc.zyng...@arm.com> Signed-off-by: Catalin Marinas <catalin.mari...@arm.com> ...
品牌 smc IN-OUT 接头种类 IN侧:直通 φ4 OUT侧:直通 φ4 系列 ARM 形式 单体阀 最高使用压力 1 MPa 使用流体 空气 保证耐压力 [MPa] 1.5 MPa 设定压力范围 0.05～0.7 MPa 安装方法 DIN导轨安装 可售卖地 北京;天津;河北;山西;内蒙古;辽宁;吉林;黑龙江;上海;江苏;浙江;安徽;福建;江西;山...