fix softlockups in stage2_apply_range()
Get series with b4
b4 am [email protected]Versions newest first · linked by author and title
- v2 Latest2 patches 2 repliesIn review
- v12 patches 1 replySuperseded
Patches in v2 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | KVM: arm64: Work out supported block level at compile timearch/ | +13 | 0 replies | |
| 2/2 | KVM: arm64: Limit stage2_apply_range() batch size to largest blockarch/ arch/ | +8 | 0 replies |
Reviews trailers per patch
None of the 2 patches has a Reviewed-by or Acked-by of their own; the series has one for all of them.
| Patch | Marc Zyngier |
|---|---|
| Series | A-b |
| 1/2 | |
| 2/2 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 5.15.y v2 0/2] fix softlockups in stage2_apply_range()
Hi Stable Team,
In 5.15, unmapping large kvm vms on arm64 can generate softlockups. My team has been hitting this when tearing down VMs > 100Gb in size.
Oliver fixed this with the attached patches. They've been in mainline since 6.1.
I tested on 5.15.150 with these patches applied. When they're present, both the dirty_log_perf_test detailed in the second patch, and kvm_page_table_test no longer generate softlockups when unmapping VMs with large memory configurations.
Would you please consider these patches for inclusion in an upcoming 5.15 release?
Change in v2: I ran format-patch without the --from option which incorrectly generated the first series without leaving Oliver in place as the author. The v2 should retain the correct authorship. Apologies for the mistake.
-K
Oliver Upton (2):
KVM: arm64: Work out supported block level at compile time
KVM: arm64: Limit stage2_apply_range() batch size to largest block
arch/arm64/include/asm/kvm_pgtable.h | 18 +++++++++++++----- arch/arm64/include/asm/stage2_pgtable.h | 20 -------------------- arch/arm64/kvm/mmu.c | 9 ++++++++- 3 files changed, 21 insertions(+), 26 deletions(-)
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2.25.1