[PATCH ARM32 v4.4 V2 02/47] arm/arm64: KVM: Advertise SMCCC v1.1
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2019-08-01 08:19:42
Also in:
stable
Subsystem:
secure monitor call(smc) calling convention (smccc), the rest · Maintainers:
Mark Rutland, Lorenzo Pieralisi, Sudeep Holla, Linus Torvalds
From: Marc Zyngier <redacted> commit 09e6be12effdb33bf7210c8867bbd213b66a499e upstream. The new SMC Calling Convention (v1.1) allows for a reduced overhead when calling into the firmware, and provides a new feature discovery mechanism. Make it visible to KVM guests. Tested-by: Ard Biesheuvel <redacted> Reviewed-by: Christoffer Dall <redacted> Signed-off-by: Marc Zyngier <redacted> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> [ Viresh: Picked only arm-smccc.h changes ] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- include/linux/arm-smccc.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h
index 611d10580340..da9f3916f9a9 100644
--- a/include/linux/arm-smccc.h
+++ b/include/linux/arm-smccc.h@@ -60,6 +60,19 @@ #define ARM_SMCCC_OWNER_TRUSTED_OS 50 #define ARM_SMCCC_OWNER_TRUSTED_OS_END 63 +#define ARM_SMCCC_VERSION_1_0 0x10000 +#define ARM_SMCCC_VERSION_1_1 0x10001 + +#define ARM_SMCCC_VERSION_FUNC_ID \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + 0, 0) + +#define ARM_SMCCC_ARCH_FEATURES_FUNC_ID \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + 0, 1) + #ifndef __ASSEMBLY__ /**
--
2.21.0.rc0.269.g1a574e7a288b
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