Tina Zhang 9a12fa5213 KVM: SVM: Disable AVIC IPI virtualization on Hygon Family 18h (erratum #1235) ... Hygon Family 18h CPUs are derived from AMD Family 17h (Zen1) silicon and share the same erratum #1235: hardware may read a stale IsRunning=1 bit during ICR write emulation and silently fail to generate an AVIC_IPI_FAILURE_TARGET_NOT_RUNNING VM-Exit on the sending vCPU. The absence of the VM-Exit causes KVM to miss the required wakeup of blocking target vCPUs, leading to hung vCPUs and unbounded delays in guest execution. Extend the existing AMD Family 17h erratum #1235 workaround to also cover Hygon Family 18h. With IPI virtualization disabled, KVM never sets IsRunning=1 in the Physical ID table, so every non-self IPI generates a VM-Exit and is correctly emulated. Fixes: 8de4a1c816 ("KVM: SVM: Disable (x2)AVIC IPI virtualization if CPU has erratum #1235") Cc: <stable@vger.kernel.org> Signed-off-by: Tina Zhang <zhang_wei@open-hieco.net> Message-ID: <20260522040014.3380201-1-zhang_wei@open-hieco.net>		2026-05-23 10:09:04 +02:00
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avic.c	KVM: SVM: Disable AVIC IPI virtualization on Hygon Family 18h (erratum #1235)	2026-05-23 10:09:04 +02:00
hyperv.c	KVM: SVM: Assert that Hyper-V's HV_SVM_EXITCODE_ENL == SVM_EXIT_SW	2026-01-13 17:37:03 -08:00
hyperv.h	KVM: nSVM: Always intercept VMMCALL when L2 is active	2026-03-04 16:08:56 -08:00
nested.c	KVM: nSVM: Never use L0's PAUSE loop exiting while L2 is running	2026-05-12 22:17:28 +02:00
pmu.c	KVM: x86/pmu: Load/put mediated PMU context when entering/exiting guest	2026-01-08 11:52:11 -08:00
sev.c	KVM SVM changes for 7.1	2026-04-13 19:00:43 +02:00
svm_onhyperv.c	KVM: SVM: Make svm_x86_ops globally visible, clean up on-HyperV usage	2025-09-23 08:56:44 -07:00
svm_onhyperv.h	KVM: SVM: Make svm_x86_ops globally visible, clean up on-HyperV usage	2025-09-23 08:56:44 -07:00
svm_ops.h	work around gcc bugs with 'asm goto' with outputs	2024-02-09 15:57:48 -08:00
svm.c	KVM: nSVM: Never use L0's PAUSE loop exiting while L2 is running	2026-05-12 22:17:28 +02:00
svm.h	KVM: x86: use inlines instead of macros for is_sev_*guest	2026-04-13 19:00:47 +02:00
vmenter.S	KVM: x86: Move "kvm_rebooting" to kernel as "virt_rebooting"	2026-03-04 08:52:31 -08:00