Re: [PATCH mm-unstable 0/2] mseal system mappings fix + s390 enablement

[Heiko Carstens]

On Tue, Mar 11, 2025 at 01:02:47PM +0000, Lorenzo Stoakes wrote:
> On Tue, Mar 11, 2025 at 01:33:24PM +0100, Heiko Carstens wrote:
> > When rebasing the mseal series on top of the generic vdso data storage
> > the VM_SEALED_SYSMAP vm flag for the vvar mapping got lost. Add that again.
> 
> I'm confused by this? Some merge patch resolution thing?

See my other mail.

> > Also add s390 support for MSEAL_SYSTEM_MAPPINGS.
> 
> 'Also' = the whole thing this series does?
> 
> Can you confirm that s390 absolutely does not rely upon
> moving/manipulating/etc. the VDSO, VVAR, etc. mappings?
> 
> You should say that here.

Just like for arm64, and x86_64 the s390 part is just adding the new
vm flag to the _install_mappings() call in vdso code. Otherwise there
is nothing to be considered.