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arm64: KVM: Use per-CPU vector when BP hardening is enabled

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Now that we have per-CPU vectors, let's plug then in the KVM/arm64 code.

Signed-off-by: Marc Zyngier <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
This commit is contained in:
Marc Zyngier 2018-01-03 16:38:35 +00:00 • committed by Catalin Marinas
commit 6840bdd73d
4 changed files with 56 additions and 2 deletions
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8
virt/kvm/arm/arm.c
View file

@ -1158,7 +1158,7 @@ static void cpu_init_hyp_mode(void *dummy)
pgd_ptr = kvm_mmu_get_httbr();
stack_page = __this_cpu_read(kvm_arm_hyp_stack_page);
hyp_stack_ptr = stack_page + PAGE_SIZE;
vector_ptr = (unsigned long)kvm_ksym_ref(__kvm_hyp_vector);
vector_ptr = (unsigned long)kvm_get_hyp_vector();
__cpu_init_hyp_mode(pgd_ptr, hyp_stack_ptr, vector_ptr);
__cpu_init_stage2();
@ -1403,6 +1403,12 @@ static int init_hyp_mode(void)
goto out_err;
}
err = kvm_map_vectors();
if (err) {
kvm_err("Cannot map vectors\n");
goto out_err;
}
/*
* Map the Hyp stack pages
*/