linux-kernel - Re: [PATCH 6.6 000/122] 6.6.28-rc1 review

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Date: Tue, 16 Apr 2024 14:22:07 +0100
From: Marc Zyngier <maz@...nel.org>
To: Naresh Kamboju <naresh.kamboju@...aro.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Mark Brown <broonie@...nel.org>,
	stable@...r.kernel.org,
	patches@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org,
	linux@...ck-us.net,
	shuah@...nel.org,
	patches@...nelci.org,
	lkft-triage@...ts.linaro.org,
	pavel@...x.de,
	jonathanh@...dia.com,
	f.fainelli@...il.com,
	sudipm.mukherjee@...il.com,
	srw@...dewatkins.net,
	rwarsow@....de,
	conor@...nel.org,
	allen.lkml@...il.com,
	Yihuang Yu <yihyu@...hat.com>,
	Gavin Shan <gshan@...hat.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Ryan Roberts <ryan.roberts@....com>,
	Anshuman Khandual <anshuman.khandual@....com>,
	Shaoqin Huang <shahuang@...hat.com>,
	Will Deacon <will@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	Anders Roxell <anders.roxell@...aro.org>
Subject: Re: [PATCH 6.6 000/122] 6.6.28-rc1 review

On Tue, 16 Apr 2024 14:07:30 +0100,
Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
> 
> On Tue, 16 Apr 2024 at 16:04, Mark Brown <broonie@...nel.org> wrote:
> >
> > On Mon, Apr 15, 2024 at 04:19:25PM +0200, Greg Kroah-Hartman wrote:
> > > This is the start of the stable review cycle for the 6.6.28 release.
> > > There are 122 patches in this series, all will be posted as a response
> > > to this one.  If anyone has any issues with these being applied, please
> > > let me know.
> >
> > The bisect of the boot issue that's affecting the FVP in v6.6 (only)
> > landed on c9ad150ed8dd988 (arm64: tlb: Fix TLBI RANGE operand),
> > e3ba51ab24fdd in mainline, as being the first bad commit - it's also in
> > the -rc for v6.8 but that seems fine.  I've done no investigation beyond
> > the bisect and looking at the commit log to pull out people to CC and
> > note that the fix was explicitly targeted at v6.6.
> 
> Anders investigated this reported issues and bisected and also found
> the missing commit for stable-rc 6.6 is
> e2768b798a19 ("arm64/mm: Modify range-based tlbi to decrement scale")

Which is definitely *not* stable candidate. We need to understand why
the invalidation goes south when the scale go up instead of down.

	M.

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