diff options
| author | Andrew Scull | 2020-09-15 11:46:42 +0100 |
|---|---|---|
| committer | Marc Zyngier | 2020-09-15 18:39:04 +0100 |
| commit | 04e4caa8d355d19fd7d26734bd2b9e3b563bb22a (patch) | |
| tree | 1d34c6b73889f17c590e6870dda984c3e0cf7e06 /arch/arm64/include/asm | |
| parent | 054698316d87a13e4c0dc8f5ecdd77b12e5eb676 (diff) | |
KVM: arm64: nVHE: Migrate hyp-init to SMCCC
To complete the transition to SMCCC, the hyp initialization is given a
function ID. This looks neater than comparing the hyp stub function IDs
to the page table physical address.
Some care is taken to only clobber x0-3 before the host context is saved
as only those registers can be clobbered accoring to SMCCC. Fortunately,
only a few acrobatics are needed. The possible new tpidr_el2 is moved to
the argument in x2 so that it can be stashed in tpidr_el2 early to free
up a scratch register. The page table configuration then makes use of
x0-2.
Signed-off-by: Andrew Scull <ascull@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200915104643.2543892-19-ascull@google.com
Diffstat (limited to 'arch/arm64/include/asm')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 82c941cf8890..ef0325c42ca0 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -480,11 +480,6 @@ int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); void kvm_arm_halt_guest(struct kvm *kvm); void kvm_arm_resume_guest(struct kvm *kvm); -u64 __kvm_call_hyp_init(phys_addr_t pgd_ptr, - unsigned long hyp_stack_ptr, - unsigned long vector_ptr, - unsigned long tpidr_el2); - #define kvm_call_hyp_nvhe(f, ...) \ ({ \ struct arm_smccc_res res; \ |