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From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
	Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
	Maxim Levitsky <mlevitsk@redhat.com>,
	Li RongQing <lirongqing@baidu.com>
Subject: [PATCH 05/19] KVM: SVM: Compute dest based on sender's x2APIC status for AVIC kick
Date: Wed, 31 Aug 2022 00:34:52 +0000	[thread overview]
Message-ID: <20220831003506.4117148-6-seanjc@google.com> (raw)
In-Reply-To: <20220831003506.4117148-1-seanjc@google.com>

Compute the destination from ICRH using the sender's x2APIC status, not
each (potential) target's x2APIC status.

Fixes: c514d3a348ac ("KVM: SVM: Update avic_kick_target_vcpus to support 32-bit APIC ID")
Cc: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/svm/avic.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c
index b59f8ee2671f..3ace0f2f52f0 100644
--- a/arch/x86/kvm/svm/avic.c
+++ b/arch/x86/kvm/svm/avic.c
@@ -441,6 +441,7 @@ static int avic_kick_target_vcpus_fast(struct kvm *kvm, struct kvm_lapic *source
 static void avic_kick_target_vcpus(struct kvm *kvm, struct kvm_lapic *source,
 				   u32 icrl, u32 icrh, u32 index)
 {
+	u32 dest = apic_x2apic_mode(source) ? icrh : GET_XAPIC_DEST_FIELD(icrh);
 	unsigned long i;
 	struct kvm_vcpu *vcpu;
 
@@ -456,13 +457,6 @@ static void avic_kick_target_vcpus(struct kvm *kvm, struct kvm_lapic *source,
 	 * since entered the guest will have processed pending IRQs at VMRUN.
 	 */
 	kvm_for_each_vcpu(i, vcpu, kvm) {
-		u32 dest;
-
-		if (apic_x2apic_mode(vcpu->arch.apic))
-			dest = icrh;
-		else
-			dest = GET_XAPIC_DEST_FIELD(icrh);
-
 		if (kvm_apic_match_dest(vcpu, source, icrl & APIC_SHORT_MASK,
 					dest, icrl & APIC_DEST_MASK)) {
 			vcpu->arch.apic->irr_pending = true;
-- 
2.37.2.672.g94769d06f0-goog


  parent reply	other threads:[~2022-08-31  0:37 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-31  0:34 [PATCH 00/19] KVM: x86: AVIC and local APIC fixes+cleanups Sean Christopherson
2022-08-31  0:34 ` [PATCH 01/19] KVM: SVM: Process ICR on AVIC IPI delivery failure due to invalid target Sean Christopherson
2022-08-31  9:18   ` Maxim Levitsky
2022-08-31  0:34 ` [PATCH 02/19] KVM: SVM: Don't put/load AVIC when setting virtual APIC mode Sean Christopherson
2022-08-31  9:24   ` Maxim Levitsky
2022-08-31 16:33     ` Sean Christopherson
2022-08-31  0:34 ` [PATCH 03/19] Revert "KVM: SVM: Introduce hybrid-AVIC mode" Sean Christopherson
2022-08-31  5:59   ` Maxim Levitsky
2022-08-31  6:45     ` Maxim Levitsky
2022-08-31 16:29       ` Sean Christopherson
2022-08-31 17:46         ` Maxim Levitsky
2022-08-31 17:58           ` Jim Mattson
2022-08-31 18:01             ` Maxim Levitsky
2022-08-31 19:12           ` Sean Christopherson
2022-09-01 10:25             ` Maxim Levitsky
2022-09-01 11:47               ` Jim Mattson
2022-09-01 13:29               ` Sean Christopherson
2022-09-01 13:53               ` Sean Christopherson
2022-09-01 15:08               ` Sean Christopherson
2022-08-31 16:19     ` Sean Christopherson
2022-08-31 17:47       ` Maxim Levitsky
2022-08-31  0:34 ` [PATCH 04/19] KVM: SVM: Replace "avic_mode" enum with "x2avic_enabled" boolean Sean Christopherson
2022-08-31  9:36   ` Maxim Levitsky
2022-08-31  0:34 ` Sean Christopherson [this message]
2022-08-31  9:38   ` [PATCH 05/19] KVM: SVM: Compute dest based on sender's x2APIC status for AVIC kick Maxim Levitsky
2022-09-01  2:56   ` Li,Rongqing
2022-08-31  0:34 ` [PATCH 06/19] KVM: SVM: Get x2APIC logical dest bitmap from ICRH[15:0], not ICHR[31:16] Sean Christopherson
2022-08-31  6:09   ` Maxim Levitsky
2022-08-31  9:43     ` Maxim Levitsky
2022-08-31 16:35       ` Sean Christopherson
2022-08-31 18:18         ` Maxim Levitsky
2022-08-31  0:34 ` [PATCH 07/19] KVM: SVM: Drop buggy and redundant AVIC "single logical dest" check Sean Christopherson
2022-08-31  6:19   ` Maxim Levitsky
2022-08-31 16:37     ` Sean Christopherson
2022-08-31 18:10       ` Maxim Levitsky
2022-08-31  0:34 ` [PATCH 08/19] KVM: SVM: Remove redundant cluster calculation that also creates a shadow Sean Christopherson
2022-08-31 10:19   ` Maxim Levitsky
2022-09-01 20:02     ` Sean Christopherson
2022-08-31  0:34 ` [PATCH 09/19] KVM: SVM: Drop duplicate calcuation of AVIC/x2AVIC "logical index" Sean Christopherson
2022-08-31  0:34 ` [PATCH 10/19] KVM: SVM: Document that vCPU ID == APIC ID in AVIC kick fastpatch Sean Christopherson
2022-08-31 10:22   ` Maxim Levitsky
2022-08-31 16:16     ` Sean Christopherson
2022-08-31 17:49       ` Maxim Levitsky
2022-08-31  0:34 ` [PATCH 11/19] KVM: SVM: Add helper to perform final AVIC "kick" of single vCPU Sean Christopherson
2022-08-31 10:25   ` Maxim Levitsky
2022-08-31 15:08     ` Sean Christopherson
2022-08-31 18:12       ` Maxim Levitsky
2022-08-31  0:34 ` [PATCH 12/19] KVM: x86: Disable APIC logical map if logical ID covers multiple MDAs Sean Christopherson
2022-08-31 13:23   ` Maxim Levitsky
2022-08-31  0:35 ` [PATCH 13/19] KVM: x86: Disable APIC logical map if vCPUs are aliased in logical mode Sean Christopherson
2022-08-31 13:24   ` Maxim Levitsky
2022-08-31  0:35 ` [PATCH 14/19] KVM: x86: Honor architectural behavior for aliased 8-bit APIC IDs Sean Christopherson
2022-08-31 13:37   ` Maxim Levitsky
2022-08-31 16:41     ` Sean Christopherson
2022-08-31 17:51       ` Maxim Levitsky
2022-08-31  0:35 ` [PATCH 15/19] KVM: x86: Explicitly skip optimized logical map setup if vCPU's LDR==0 Sean Christopherson
2022-08-31 13:41   ` Maxim Levitsky
2022-08-31 16:47     ` Sean Christopherson
2022-08-31  0:35 ` [PATCH 16/19] KVM: x86: Explicitly track all possibilities for APIC map's logical modes Sean Christopherson
2022-08-31 13:43   ` Maxim Levitsky
2022-08-31 16:56     ` Sean Christopherson
2022-08-31 17:53       ` Maxim Levitsky
2022-09-16 18:58         ` Sean Christopherson
2022-08-31 18:42   ` Maxim Levitsky
2022-08-31 19:17     ` Sean Christopherson
2022-08-31  0:35 ` [PATCH 17/19] KVM: SVM: Handle multiple logical targets in AVIC kick fastpath Sean Christopherson
2022-08-31 13:57   ` Maxim Levitsky
2022-08-31 18:19     ` Sean Christopherson
2022-08-31 18:25       ` Maxim Levitsky
2022-08-31  0:35 ` [PATCH 18/19] KVM: SVM: Ignore writes to Remote Read Data on AVIC write traps Sean Christopherson
2022-08-31 10:40   ` Maxim Levitsky
2022-08-31  0:35 ` [PATCH 19/19] Revert "KVM: SVM: Do not throw warning when calling avic_vcpu_load on a running vcpu" Sean Christopherson
2022-08-31  6:07   ` Maxim Levitsky
2022-08-31  7:03     ` Maxim Levitsky

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