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[Qemu-arm] [PATCH v3 10/34] target/arm: Update CNTVCT_EL0 for VHE
From: |
Richard Henderson |
Subject: |
[Qemu-arm] [PATCH v3 10/34] target/arm: Update CNTVCT_EL0 for VHE |
Date: |
Sat, 3 Aug 2019 11:47:36 -0700 |
The virtual offset may be 0 depending on EL, E2H and TGE.
Reviewed-by: Alex Bennée <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
target/arm/helper.c | 40 +++++++++++++++++++++++++++++++++++++---
1 file changed, 37 insertions(+), 3 deletions(-)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 8d8b3cc40e..e2fcb03da5 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -2484,9 +2484,31 @@ static uint64_t gt_cnt_read(CPUARMState *env, const
ARMCPRegInfo *ri)
return gt_get_countervalue(env);
}
+static uint64_t gt_virt_cnt_offset(CPUARMState *env)
+{
+ uint64_t hcr;
+
+ switch (arm_current_el(env)) {
+ case 2:
+ hcr = arm_hcr_el2_eff(env);
+ if (hcr & HCR_E2H) {
+ return 0;
+ }
+ break;
+ case 0:
+ hcr = arm_hcr_el2_eff(env);
+ if ((hcr & (HCR_E2H | HCR_TGE)) == (HCR_E2H | HCR_TGE)) {
+ return 0;
+ }
+ break;
+ }
+
+ return env->cp15.cntvoff_el2;
+}
+
static uint64_t gt_virt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
- return gt_get_countervalue(env) - env->cp15.cntvoff_el2;
+ return gt_get_countervalue(env) - gt_virt_cnt_offset(env);
}
static void gt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
@@ -2501,7 +2523,13 @@ static void gt_cval_write(CPUARMState *env, const
ARMCPRegInfo *ri,
static uint64_t gt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri,
int timeridx)
{
- uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0;
+ uint64_t offset = 0;
+
+ switch (timeridx) {
+ case GTIMER_VIRT:
+ offset = gt_virt_cnt_offset(env);
+ break;
+ }
return (uint32_t)(env->cp15.c14_timer[timeridx].cval -
(gt_get_countervalue(env) - offset));
@@ -2511,7 +2539,13 @@ static void gt_tval_write(CPUARMState *env, const
ARMCPRegInfo *ri,
int timeridx,
uint64_t value)
{
- uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0;
+ uint64_t offset = 0;
+
+ switch (timeridx) {
+ case GTIMER_VIRT:
+ offset = gt_virt_cnt_offset(env);
+ break;
+ }
trace_arm_gt_tval_write(timeridx, value);
env->cp15.c14_timer[timeridx].cval = gt_get_countervalue(env) - offset +
--
2.17.1
- [Qemu-arm] [PATCH v3 00/34] target/arm: Implement ARMv8.1-VHE, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 01/34] cputlb: Add tlb_set_asid_for_mmuidx, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 02/34] cputlb: Add tlb_flush_asid_by_mmuidx and friends, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 03/34] target/arm: Install ASIDs for long-form from EL1, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 04/34] target/arm: Install ASIDs for short-form from EL1, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 06/34] target/arm: Define isar_feature_aa64_vh, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 05/34] target/arm: Install ASIDs for EL2, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 09/34] target/arm: Add TTBR1_EL2, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 10/34] target/arm: Update CNTVCT_EL0 for VHE,
Richard Henderson <=
- [Qemu-arm] [PATCH v3 07/34] target/arm: Enable HCR_E2H for VHE, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 08/34] target/arm: Add CONTEXTIDR_EL2, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 12/34] target/arm: Add VHE system register redirection and aliasing, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 13/34] target/arm: Split out vae1_tlbmask, vmalle1_tlbmask, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 11/34] target/arm: Add the hypervisor virtual counter, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 15/34] target/arm: Rename ARMMMUIdx*_S12NSE* to ARMMMUIdx*_E10_*, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 17/34] target/arm: Rename ARMMMUIdx_S1NSE* to ARMMMUIdx_Stage1_E*, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 14/34] target/arm: Simplify tlb_force_broadcast alternatives, Richard Henderson, 2019/08/03
- [Qemu-arm] [PATCH v3 16/34] target/arm: Rename ARMMMUIdx_S2NS to ARMMMUIdx_Stage2, Richard Henderson, 2019/08/03