From: Fuad Tabba <tabba@google.com>
To: kvmarm@lists.cs.columbia.edu
Cc: maz@kernel.org, will@kernel.org, james.morse@arm.com,
alexandru.elisei@arm.com, suzuki.poulose@arm.com,
mark.rutland@arm.com, christoffer.dall@arm.com,
drjones@redhat.com, qperret@google.com, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, kernel-team@android.com,
tabba@google.com
Subject: [RFC PATCH v1 14/30] KVM: arm64: reduce scope of vgic v2
Date: Fri, 24 Sep 2021 13:53:43 +0100 [thread overview]
Message-ID: <20210924125359.2587041-15-tabba@google.com> (raw)
In-Reply-To: <20210924125359.2587041-1-tabba@google.com>
vgic v2 interface functions are passed vcpu, when the state
that they need is the vgic distributor, as well as the
kvm_cpu_context and the recently created vcpu_hyp_state. Reduce
the scope of its interface functions to these structs.
Pass the vgic distributor to fixup_guest_exit so that it's not
dependent on struct kvm for the vgic state. NOTE: this change to
fixup_guest_exit is temporary, and will be tidied up in in a
subsequent patch in this series.
Signed-off-by: Fuad Tabba <tabba@google.com>
---
arch/arm64/include/asm/kvm_hyp.h | 2 +-
arch/arm64/kvm/hyp/include/hyp/switch.h | 4 ++--
arch/arm64/kvm/hyp/nvhe/switch.c | 4 +++-
arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c | 16 ++++++----------
arch/arm64/kvm/hyp/vhe/switch.c | 3 ++-
5 files changed, 14 insertions(+), 15 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_hyp.h b/arch/arm64/include/asm/kvm_hyp.h
index 2737e05a16b2..d9a8872a7efb 100644
--- a/arch/arm64/include/asm/kvm_hyp.h
+++ b/arch/arm64/include/asm/kvm_hyp.h
@@ -55,7 +55,7 @@ DECLARE_PER_CPU(struct kvm_nvhe_init_params, kvm_init_params);
*/
#define __kvm_swab32(x) ___constant_swab32(x)
-int __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu);
+int __vgic_v2_perform_cpuif_access(struct vgic_dist *vgic, struct kvm_cpu_context *ctxt, struct vcpu_hyp_state *hyps);
void __vgic_v3_save_state(struct vgic_v3_cpu_if *cpu_if);
void __vgic_v3_restore_state(struct vgic_v3_cpu_if *cpu_if);
diff --git a/arch/arm64/kvm/hyp/include/hyp/switch.h b/arch/arm64/kvm/hyp/include/hyp/switch.h
index 075719c07009..30fcfe84f609 100644
--- a/arch/arm64/kvm/hyp/include/hyp/switch.h
+++ b/arch/arm64/kvm/hyp/include/hyp/switch.h
@@ -424,7 +424,7 @@ static inline bool __hyp_handle_ptrauth(struct kvm_vcpu *vcpu)
* the guest, false when we should restore the host state and return to the
* main run loop.
*/
-static inline bool fixup_guest_exit(struct kvm_vcpu *vcpu, u64 *exit_code)
+static inline bool fixup_guest_exit(struct kvm_vcpu *vcpu, struct vgic_dist *vgic, u64 *exit_code)
{
struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu);
struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu);
@@ -486,7 +486,7 @@ static inline bool fixup_guest_exit(struct kvm_vcpu *vcpu, u64 *exit_code)
!kvm_vcpu_abt_iss1tw(vcpu);
if (valid) {
- int ret = __vgic_v2_perform_cpuif_access(vcpu);
+ int ret = __vgic_v2_perform_cpuif_access(vgic, vcpu_ctxt, vcpu_hyps);
if (ret == 1)
goto guest;
diff --git a/arch/arm64/kvm/hyp/nvhe/switch.c b/arch/arm64/kvm/hyp/nvhe/switch.c
index eadbf2ccaf68..164b0f899f7b 100644
--- a/arch/arm64/kvm/hyp/nvhe/switch.c
+++ b/arch/arm64/kvm/hyp/nvhe/switch.c
@@ -172,6 +172,8 @@ int __kvm_vcpu_run(struct kvm_vcpu *vcpu)
{
struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu);
struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu);
+ struct kvm *kvm = kern_hyp_va(vcpu->kvm);
+ struct vgic_dist *vgic = &kvm->arch.vgic;
struct kvm_cpu_context *host_ctxt;
struct kvm_cpu_context *guest_ctxt;
bool pmu_switch_needed;
@@ -230,7 +232,7 @@ int __kvm_vcpu_run(struct kvm_vcpu *vcpu)
exit_code = __guest_enter(vcpu);
/* And we're baaack! */
- } while (fixup_guest_exit(vcpu, &exit_code));
+ } while (fixup_guest_exit(vcpu, vgic, &exit_code));
__sysreg_save_state_nvhe(guest_ctxt);
__sysreg32_save_state(vcpu);
diff --git a/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c b/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c
index acd0d21394e3..787f973af43a 100644
--- a/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c
+++ b/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c
@@ -34,19 +34,15 @@ static bool __is_be(struct kvm_cpu_context *vcpu_ctxt)
* 0: Not a GICV access
* -1: Illegal GICV access successfully performed
*/
-int __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu)
+int __vgic_v2_perform_cpuif_access(struct vgic_dist *vgic, struct kvm_cpu_context *vcpu_ctxt, struct vcpu_hyp_state *vcpu_hyps)
{
- struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu);
- struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu);
- struct kvm *kvm = kern_hyp_va(vcpu->kvm);
- struct vgic_dist *vgic = &kvm->arch.vgic;
phys_addr_t fault_ipa;
void __iomem *addr;
int rd;
/* Build the full address */
- fault_ipa = kvm_vcpu_get_fault_ipa(vcpu);
- fault_ipa |= kvm_vcpu_get_hfar(vcpu) & GENMASK(11, 0);
+ fault_ipa = kvm_hyp_state_get_fault_ipa(vcpu_hyps);
+ fault_ipa |= kvm_hyp_state_get_hfar(vcpu_hyps) & GENMASK(11, 0);
/* If not for GICV, move on */
if (fault_ipa < vgic->vgic_cpu_base ||
@@ -54,7 +50,7 @@ int __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu)
return 0;
/* Reject anything but a 32bit access */
- if (kvm_vcpu_dabt_get_as(vcpu) != sizeof(u32)) {
+ if (kvm_hyp_state_dabt_get_as(vcpu_hyps) != sizeof(u32)) {
__kvm_skip_instr(vcpu_ctxt, vcpu_hyps);
return -1;
}
@@ -65,11 +61,11 @@ int __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu)
return -1;
}
- rd = kvm_vcpu_dabt_get_rd(vcpu);
+ rd = kvm_hyp_state_dabt_get_rd(vcpu_hyps);
addr = kvm_vgic_global_state.vcpu_hyp_va;
addr += fault_ipa - vgic->vgic_cpu_base;
- if (kvm_vcpu_dabt_iswrite(vcpu)) {
+ if (kvm_hyp_state_dabt_iswrite(vcpu_hyps)) {
u32 data = ctxt_get_reg(vcpu_ctxt, rd);
if (__is_be(vcpu_ctxt)) {
/* guest pre-swabbed data, undo this for writel() */
diff --git a/arch/arm64/kvm/hyp/vhe/switch.c b/arch/arm64/kvm/hyp/vhe/switch.c
index 395274532c20..f315058a50ca 100644
--- a/arch/arm64/kvm/hyp/vhe/switch.c
+++ b/arch/arm64/kvm/hyp/vhe/switch.c
@@ -111,6 +111,7 @@ static int __kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu)
{
struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu);
struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu);
+ struct vgic_dist *vgic = &vcpu->kvm->arch.vgic;
struct kvm_cpu_context *host_ctxt;
struct kvm_cpu_context *guest_ctxt;
u64 exit_code;
@@ -145,7 +146,7 @@ static int __kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu)
exit_code = __guest_enter(vcpu);
/* And we're baaack! */
- } while (fixup_guest_exit(vcpu, &exit_code));
+ } while (fixup_guest_exit(vcpu, vgic, &exit_code));
sysreg_save_guest_state_vhe(guest_ctxt);
--
2.33.0.685.g46640cef36-goog
next prev parent reply other threads:[~2021-09-24 13:23 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-24 12:53 [RFC PATCH v1 00/30] Reduce scope of vcpu state at hyp by refactoring out state hyp needs Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 01/30] KVM: arm64: placeholder to check if VM is protected Fuad Tabba
2021-09-27 15:50 ` Quentin Perret
2021-09-24 12:53 ` [RFC PATCH v1 02/30] [DONOTMERGE] Temporarily disable unused variable warning Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 03/30] [DONOTMERGE] Coccinelle scripts for refactoring Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 04/30] KVM: arm64: remove unused parameters and asm offsets Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 05/30] KVM: arm64: add accessors for kvm_cpu_context Fuad Tabba
2021-09-27 15:57 ` Quentin Perret
2021-09-24 12:53 ` [RFC PATCH v1 06/30] KVM: arm64: COCCI: use_ctxt_access.cocci: use kvm_cpu_context accessors Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 07/30] KVM: arm64: COCCI: add_ctxt.cocci use_ctxt.cocci: reduce scope of functions to kvm_cpu_ctxt Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 08/30] KVM: arm64: add hypervisor state accessors Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 09/30] KVM: arm64: COCCI: vcpu_hyp_accessors.cocci: use accessors for hypervisor state vcpu variables Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 10/30] KVM: arm64: Add accessors for hypervisor state in kvm_vcpu_arch Fuad Tabba
2021-09-27 16:10 ` Quentin Perret
2021-09-24 12:53 ` [RFC PATCH v1 11/30] KVM: arm64: create and use a new vcpu_hyp_state struct Fuad Tabba
2021-09-27 16:32 ` Quentin Perret
2021-09-24 12:53 ` [RFC PATCH v1 12/30] KVM: arm64: COCCI: add_hypstate.cocci use_hypstate.cocci: Reduce scope of functions to hyp_state Fuad Tabba
2021-09-27 16:40 ` Quentin Perret
2021-09-24 12:53 ` [RFC PATCH v1 13/30] KVM: arm64: change function parameters to use kvm_cpu_ctxt and hyp_state Fuad Tabba
2021-09-24 12:53 ` Fuad Tabba [this message]
2021-09-24 12:53 ` [RFC PATCH v1 15/30] KVM: arm64: COCCI: vgic3_cpu.cocci: reduce scope of vgic v3 Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 16/30] KVM: arm64: reduce scope of vgic_v3 access parameters Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 17/30] KVM: arm64: access __hyp_running_vcpu via accessors only Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 18/30] KVM: arm64: reduce scope of __guest_exit to only depend on kvm_cpu_context Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 19/30] KVM: arm64: change calls of get_loaded_vcpu to get_loaded_vcpu_ctxt Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 20/30] KVM: arm64: add __hyp_running_ctxt and __hyp_running_hyps Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 21/30] KVM: arm64: transition code to " Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 22/30] KVM: arm64: reduce scope of __guest_enter to depend only on kvm_cpu_ctxt Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 23/30] KVM: arm64: COCCI: remove_unused.cocci: remove unused ctxt and hypstate variables Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 24/30] KVM: arm64: remove unused functions Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 25/30] KVM: arm64: separate kvm_run() for protected VMs Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 26/30] KVM: arm64: pVM activate_traps to use vcpu_ctxt and vcpu_hyp_state Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 27/30] KVM: arm64: remove unsupported pVM features Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 28/30] KVM: arm64: reduce scope of pVM fixup_guest_exit to hyp_state and kvm_cpu_ctxt Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 29/30] [DONOTMERGE] Remove Coccinelle scripts added for refactoring Fuad Tabba
2021-09-24 12:53 ` [RFC PATCH v1 30/30] [DONOTMERGE] Re-enable warnings Fuad Tabba
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