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arm64: KVM: Simplify HYP init/teardown

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Now that we only have the "merged page tables" case to deal with,
there is a bunch of things we can simplify in the HYP code (both
at init and teardown time).

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Marc Zyngier
2016-06-30 18:40:44 +01:00
committed by Christoffer Dall
parent 0535a3e2b2
commit 3421e9d88d
5 changed files with 26 additions and 92 deletions
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12
arch/arm64/include/asm/kvm_host.h
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@@ -48,7 +48,6 @@
int __attribute_const__ kvm_target_cpu(void);
int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
int kvm_arch_dev_ioctl_check_extension(long ext);
unsigned long kvm_hyp_reset_entry(void);
void __extended_idmap_trampoline(phys_addr_t boot_pgd, phys_addr_t idmap_start);
struct kvm_arch {
@@ -357,19 +356,14 @@ static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr,
* Call initialization code, and switch to the full blown
* HYP code.
*/
__kvm_call_hyp((void *)boot_pgd_ptr, pgd_ptr,
hyp_stack_ptr, vector_ptr);
__kvm_call_hyp((void *)pgd_ptr, hyp_stack_ptr, vector_ptr);
}
void __kvm_hyp_teardown(void);
static inline void __cpu_reset_hyp_mode(phys_addr_t boot_pgd_ptr,
phys_addr_t phys_idmap_start)
{
/*
* Call reset code, and switch back to stub hyp vectors.
* Uses __kvm_call_hyp() to avoid kaslr's kvm_ksym_ref() translation.
*/
__kvm_call_hyp((void *)kvm_hyp_reset_entry(),
boot_pgd_ptr, phys_idmap_start);
kvm_call_hyp(__kvm_hyp_teardown, phys_idmap_start);
}
static inline void kvm_arch_hardware_unsetup(void) {}