Re: [PATCH 5.15.y v2 0/2] fix softlockups in stage2_apply_range()

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On Wed, 06 Mar 2024 00:49:34 +0000,
Krister Johansen <kjlx@xxxxxxxxxxxxxxxxxx> wrote:
> 
> 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.

Thanks for this.

FWIW,

Acked-by: Marc Zyngier <maz@xxxxxxxxxx>

	M.

-- 
Without deviation from the norm, progress is not possible.




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