Now that this function isn't constrained by the 32bit PCS,
let's simplify it by taking a single 64bit offset instead
of two 32bit parameters.
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
arch/arm64/include/asm/kvm_asm.h | 2 +-
arch/arm64/kvm/arch_timer.c | 12 +-----------
arch/arm64/kvm/hyp/timer-sr.c | 3 +--
3 files changed, 3 insertions(+), 14 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h
index 7c7eeeaab9fa..59e314f38e43 100644
--- a/arch/arm64/include/asm/kvm_asm.h
+++ b/arch/arm64/include/asm/kvm_asm.h
@@ -64,7 +64,7 @@ extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
extern void __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu);
-extern void __kvm_timer_set_cntvoff(u32 cntvoff_low, u32 cntvoff_high);
+extern void __kvm_timer_set_cntvoff(u64 cntvoff);
extern int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu);
diff --git a/arch/arm64/kvm/arch_timer.c b/arch/arm64/kvm/arch_timer.c
index 93bd59b46848..487eba9f87cd 100644
--- a/arch/arm64/kvm/arch_timer.c
+++ b/arch/arm64/kvm/arch_timer.c
@@ -451,17 +451,7 @@ static void timer_restore_state(struct arch_timer_context *ctx)
static void set_cntvoff(u64 cntvoff)
{
- u32 low = lower_32_bits(cntvoff);
- u32 high = upper_32_bits(cntvoff);
-
- /*
- * Since kvm_call_hyp doesn't fully support the ARM PCS especially on
- * 32-bit systems, but rather passes register by register shifted one
- * place (we put the function address in r0/x0), we cannot simply pass
- * a 64-bit value as an argument, but have to split the value in two
- * 32-bit halves.
- */
- kvm_call_hyp(__kvm_timer_set_cntvoff, low, high);
+ kvm_call_hyp(__kvm_timer_set_cntvoff, cntvoff);
}
static inline void set_timer_irq_phys_active(struct arch_timer_context *ctx, bool active)
diff --git a/arch/arm64/kvm/hyp/timer-sr.c b/arch/arm64/kvm/hyp/timer-sr.c
index ff76e6845fe4..fb5c0be33223 100644
--- a/arch/arm64/kvm/hyp/timer-sr.c
+++ b/arch/arm64/kvm/hyp/timer-sr.c
@@ -10,9 +10,8 @@
#include <asm/kvm_hyp.h>
-void __hyp_text __kvm_timer_set_cntvoff(u32 cntvoff_low, u32 cntvoff_high)
+void __hyp_text __kvm_timer_set_cntvoff(u64 cntvoff)
{
- u64 cntvoff = (u64)cntvoff_high << 32 | cntvoff_low;
write_sysreg(cntvoff, cntvoff_el2);
}
--
2.26.2
