[PATCH v2 11/16] firmware/smccc: Call arch-specific hook on discovering KVM services
From: Marc Zyngier <maz@kernel.org>
Date: 2021-10-04 17:56:59
Also in:
kvm, kvmarm, lkml
Subsystem:
arm port, arm64 port (aarch64 architecture), secure monitor call(smc) calling convention (smccc), the rest · Maintainers:
Russell King, Catalin Marinas, Will Deacon, Mark Rutland, Lorenzo Pieralisi, Sudeep Holla, Linus Torvalds
arm64 will soon require its own callback to initialise services that are only availably on this architecture. Introduce a hook that can be overloaded by the architecture. Signed-off-by: Marc Zyngier <maz@kernel.org> --- arch/arm/include/asm/hypervisor.h | 1 + arch/arm64/include/asm/hypervisor.h | 1 + drivers/firmware/smccc/kvm_guest.c | 4 ++++ 3 files changed, 6 insertions(+)
diff --git a/arch/arm/include/asm/hypervisor.h b/arch/arm/include/asm/hypervisor.h
index bd61502b9715..8133c8c81a35 100644
--- a/arch/arm/include/asm/hypervisor.h
+++ b/arch/arm/include/asm/hypervisor.h@@ -6,5 +6,6 @@ void kvm_init_hyp_services(void); bool kvm_arm_hyp_service_available(u32 func_id); +void kvm_arm_init_hyp_services(void); #endif
diff --git a/arch/arm64/include/asm/hypervisor.h b/arch/arm64/include/asm/hypervisor.h
index 0ae427f352c8..8e77f411903f 100644
--- a/arch/arm64/include/asm/hypervisor.h
+++ b/arch/arm64/include/asm/hypervisor.h@@ -6,5 +6,6 @@ void kvm_init_hyp_services(void); bool kvm_arm_hyp_service_available(u32 func_id); +void kvm_arm_init_hyp_services(void); #endif
diff --git a/drivers/firmware/smccc/kvm_guest.c b/drivers/firmware/smccc/kvm_guest.c
index 2d3e866decaa..56169e73252a 100644
--- a/drivers/firmware/smccc/kvm_guest.c
+++ b/drivers/firmware/smccc/kvm_guest.c@@ -9,6 +9,8 @@ #include <asm/hypervisor.h> +void __weak kvm_arm_init_hyp_services(void) {} + static DECLARE_BITMAP(__kvm_arm_hyp_services, ARM_SMCCC_KVM_NUM_FUNCS) __ro_after_init = { }; void __init kvm_init_hyp_services(void)
@@ -38,6 +40,8 @@ void __init kvm_init_hyp_services(void) pr_info("hypervisor services detected (0x%08lx 0x%08lx 0x%08lx 0x%08lx)\n", res.a3, res.a2, res.a1, res.a0); + + kvm_arm_init_hyp_services(); } bool kvm_arm_hyp_service_available(u32 func_id)
--
2.30.2
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