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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 18/30] KVM: arm64: reduce scope of __guest_exit to only depend on kvm_cpu_context
Date: Fri, 24 Sep 2021 13:53:47 +0100	[thread overview]
Message-ID: <20210924125359.2587041-19-tabba@google.com> (raw)
In-Reply-To: <20210924125359.2587041-1-tabba@google.com>

__guest_exit only needs kvm_cpu_context (via the offset
VCPU_CONTEXT). Only pass that to it, and fix it to ensure that it
only refers to kvm_cpu_context rather than vcpu.

Signed-off-by: Fuad Tabba <tabba@google.com>
---
 arch/arm64/kvm/hyp/entry.S     | 7 ++-----
 arch/arm64/kvm/hyp/hyp-entry.S | 8 ++++----
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/kvm/hyp/entry.S b/arch/arm64/kvm/hyp/entry.S
index e831d3dfd50d..996bdc9555da 100644
--- a/arch/arm64/kvm/hyp/entry.S
+++ b/arch/arm64/kvm/hyp/entry.S
@@ -99,15 +99,12 @@ SYM_INNER_LABEL(__guest_exit_panic, SYM_L_GLOBAL)
 	adr_l	x1, hyp_panic
 	str	x1, [x0, #CPU_XREG_OFFSET(30)]
 
-	get_vcpu_ptr	x1, x0
+	get_vcpu_ctxt_ptr	x1, x0
 
 SYM_INNER_LABEL(__guest_exit, SYM_L_GLOBAL)
 	// x0: return code
-	// x1: vcpu
+	// x1: ctxt
 	// x2-x29,lr: vcpu regs
-	// vcpu x0-x1 on the stack
-
-	add	x1, x1, #VCPU_CONTEXT
 
 	ALTERNATIVE(nop, SET_PSTATE_PAN(1), ARM64_HAS_PAN, CONFIG_ARM64_PAN)
 
diff --git a/arch/arm64/kvm/hyp/hyp-entry.S b/arch/arm64/kvm/hyp/hyp-entry.S
index 5f49df4ffdd8..704b3388c86a 100644
--- a/arch/arm64/kvm/hyp/hyp-entry.S
+++ b/arch/arm64/kvm/hyp/hyp-entry.S
@@ -71,17 +71,17 @@ wa_epilogue:
 	sb
 
 el1_trap:
-	get_vcpu_ptr	x1, x0
+	get_vcpu_ctxt_ptr	x1, x0
 	mov	x0, #ARM_EXCEPTION_TRAP
 	b	__guest_exit
 
 el1_irq:
-	get_vcpu_ptr	x1, x0
+	get_vcpu_ctxt_ptr	x1, x0
 	mov	x0, #ARM_EXCEPTION_IRQ
 	b	__guest_exit
 
 el1_error:
-	get_vcpu_ptr	x1, x0
+	get_vcpu_ctxt_ptr	x1, x0
 	mov	x0, #ARM_EXCEPTION_EL1_SERROR
 	b	__guest_exit
 
@@ -100,7 +100,7 @@ el2_sync:
 
 1:
 	/* Let's attempt a recovery from the illegal exception return */
-	get_vcpu_ptr	x1, x0
+	get_vcpu_ctxt_ptr	x1, x0
 	mov	x0, #ARM_EXCEPTION_IL
 	b	__guest_exit
 
-- 
2.33.0.685.g46640cef36-goog


  parent reply	other threads:[~2021-09-24 13:24 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 ` [RFC PATCH v1 14/30] KVM: arm64: reduce scope of vgic v2 Fuad Tabba
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 ` Fuad Tabba [this message]
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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