Hi, v1: https://lore.kernel.org/xen-devel/[email protected] pipeline (in progress): https://gitlab.com/xen-project/people/agvallejo/xen/-/pipelines/2276726870
Original cover letter: Bus Locks are very costly and a VM left unchecked spamming instructions that lock the memory bus (e.g: unaligned atomic CAS) makes system perf take a nosedive. This patch is similar to BLD of VMX, but for SVM. It configures all VMRUNs so they automatically exit at the first encounter of a buslock event, effectively rate-limiting them. Cheers, Alejandro Alejandro Vallejo (3): x86/svm: Add infrastructure for Bus Lock Threshold x86/svm: Intercept Bus Locks for HVM guests CHANGELOG: Note the new SVM bus-lock intercept CHANGELOG.md | 3 +++ xen/arch/x86/hvm/svm/svm.c | 6 ++++++ xen/arch/x86/hvm/svm/vmcb.c | 3 +++ xen/arch/x86/hvm/svm/vmcb.h | 15 +++++++++++++-- xen/arch/x86/include/asm/hvm/svm.h | 2 ++ xen/arch/x86/include/asm/perfc_defn.h | 2 +- 6 files changed, 28 insertions(+), 3 deletions(-) base-commit: 61204ed24ba4537d6eff56594faa5d23cacb8310 -- 2.43.0
