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firmware/smccc: Call arch-specific hook on discovering KVM services

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arm64 will soon require its own callback to initialise services
that are only available on this architecture. Introduce a hook
that can be overloaded by the architecture.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240830130150.8568-2-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Marc Zyngier 2024-08-30 14:01:44 +01:00 committed by Will Deacon
parent 7c626ce4ba
commit 0ba5b4ba61
3 changed files with 8 additions and 0 deletions
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2
arch/arm/include/asm/hypervisor.h
View File

@ -7,4 +7,6 @@
void kvm_init_hyp_services(void);
bool kvm_arm_hyp_service_available(u32 func_id);
static inline void kvm_arch_init_hyp_services(void) { };
#endif

4
arch/arm64/include/asm/hypervisor.h
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@ -7,4 +7,8 @@
void kvm_init_hyp_services(void);
bool kvm_arm_hyp_service_available(u32 func_id);
static inline void kvm_arch_init_hyp_services(void)
{
};
#endif

2
drivers/firmware/smccc/kvm_guest.c
View File

@ -39,6 +39,8 @@ 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_arch_init_hyp_services();
}
bool kvm_arm_hyp_service_available(u32 func_id)