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SubjectRe: commit f8f559422b (KVM: MMU: fast invalidate all mmio sptes) causes hang
On 2013.07.18 at 01:25 +0800, Xiao Guangrong wrote:
> Hi Markus,
>
> Thanks for your report! I am downloading the ubuntu iso and will try to reproducible it.
>
> Could you please enable these tracepoints:
> kvmmmu/check_mmio_spte
> kvmmmu/handle_mmio_page_fault
> kvmmmu/kvm_mmu_invalidate_zap_all_pages
> kvmmmu/mark_mmio_spte
> kvm/kvm_mmio
> kvm/vcpu_match_mmio
>
> and post the output?
>
First line repeated ad nauseam.
...
10346367 qemu-system-x86-1403 [001] 1451.422225: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346368 qemu-system-x86-1403 [001] 1451.422226: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346369 qemu-system-x86-1403 [001] 1451.422227: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346370 qemu-system-x86-1403 [001] 1451.422228: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346371 qemu-system-x86-1403 [001] 1451.422229: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346372 qemu-system-x86-1404 [002] 1451.422229: kvm_mmio: mmio write len 4 gpa 0xfee000b0 val 0x0
10346373 qemu-system-x86-1403 [001] 1451.422230: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346374 qemu-system-x86-1403 [001] 1451.422231: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346375 qemu-system-x86-1403 [001] 1451.422232: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346376 qemu-system-x86-1403 [001] 1451.422233: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346377 qemu-system-x86-1403 [001] 1451.422234: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346378 qemu-system-x86-1403 [001] 1451.422235: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346379 qemu-system-x86-1404 [002] 1451.422236: kvm_mmio: mmio write len 4 gpa 0xfee00380 val 0x3c7b0
10346380 qemu-system-x86-1403 [001] 1451.422237: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346381 qemu-system-x86-1403 [001] 1451.422238: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346382 qemu-system-x86-1403 [001] 1451.422239: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346383 qemu-system-x86-1403 [001] 1451.422240: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346384 qemu-system-x86-1403 [001] 1451.422241: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346385 qemu-system-x86-1403 [001] 1451.422242: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346386 qemu-system-x86-1403 [001] 1451.422243: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346387 qemu-system-x86-1403 [001] 1451.422244: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
10346403 qemu-system-x86-1403 [001] 1451.422260: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
...
Last line repeated ad nauseam.

Whole output is over 1.3G of size.

--
Markus


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