linux-kernel - Re: [PATCH 6/8] modules: switch to execmem API for remapping as RW and restoring ROX

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Message-ID: <Z3iX2mNtqSYrvYPT@bombadil.infradead.org>
Date: Fri, 3 Jan 2025 18:07:22 -0800
From: Luis Chamberlain <mcgrof@...nel.org>
To: Jürgen Groß <jgross@...e.com>,
	Marek Maślanka <mmaslanka@...gle.com>,
	Adam Williamson <awilliam@...hat.com>
Cc: Andrew Cooper <andrew.cooper3@...rix.com>, lorenzo.stoakes@...cle.com,
	akpm@...ux-foundation.org, anton.ivanov@...bridgegreys.com,
	bp@...en8.de, brendan.higgins@...ux.dev, da.gomez@...sung.com,
	danielt@...nel.org, dave.hansen@...ux.intel.com,
	davidgow@...gle.com, dianders@...omium.org, hpa@...or.com,
	jason.wessel@...driver.com, jikos@...nel.org,
	joe.lawrence@...hat.com, johannes@...solutions.net,
	jpoimboe@...nel.org, kgdb-bugreport@...ts.sourceforge.net,
	kirill.shutemov@...ux.intel.com, kunit-dev@...glegroups.com,
	linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
	linux-mm@...ck.org, linux-modules@...r.kernel.org,
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	rostedt@...dmis.org, rppt@...nel.org, samitolvanen@...gle.com,
	shuah@...nel.org, song@...nel.org, tglx@...utronix.de,
	x86@...nel.org,
	Marek Marczykowski-Górecki <marmarek@...isiblethingslab.com>
Subject: Re: [PATCH 6/8] modules: switch to execmem API for remapping as RW
 and restoring ROX

On Fri, Jan 03, 2025 at 07:58:13AM +0100, Jürgen Groß wrote:
> On 03.01.25 03:06, Andrew Cooper wrote:
> > > Hi Mike,
> > > 
> > > This commit is making my intel box not boot in mm-unstable :>) I bisected it to
> > > this commit.
> > 
> > For what it's worth, we've found the same under Xen too.
> > 
> > There's one concrete bug in the series, failing to cope with the absence
> > of superpages (fix in
> > https://lore.kernel.org/xen-devel/6bb03333-74ca-4c2c-85a8-72549b85a5b4@suse.com/
> > but not formally posted yet AFAICT).
> 
> Now sent out:
> 
> https://lore.kernel.org/lkml/20250103065631.26459-1-jgross@suse.com/T/#u

Thanks, 

Marek, Adam, can you try this patch? Although the reply here is for
another future series being worked on the fix is for commit
2e45474ab14f ("execmem: add support for cache of large ROX pages").

  Luis