> -----Original Message-----
> From: Greg Kroah-Hartman [mailto:[email protected]]
> Sent: Sunday, December 10, 2017 4:27 PM
> To: Ben Hutchings <[email protected]>; Ghannam, Yazen
> <[email protected]>
> Cc: [email protected]; [email protected]; Matt Fleming
> <[email protected]>; Borislav Petkov <[email protected]>; Andrew
> Morton <[email protected]>; Andy Lutomirski
> <[email protected]>; Andy Lutomirski <[email protected]>; Ard Biesheuvel
> <[email protected]>; Borislav Petkov <[email protected]>; Brian Gerst
> <[email protected]>; Dave Jones <[email protected]>; Denys
> Vlasenko <[email protected]>; H. Peter Anvin <[email protected]>; Linus
> Torvalds <[email protected]>; Peter Zijlstra
> <[email protected]>; Sai Praneeth Prakhya
> <[email protected]>; Stephen Smalley <[email protected]>;
> Thomas Gleixner <[email protected]>; Toshi Kani <[email protected]>;
> [email protected]; Ingo Molnar <[email protected]>; Ghannam,
> Yazen <[email protected]>; Alex Thorlton <[email protected]>
> Subject: Re: [PATCH 4.4 05/27] x86/efi: Build our own page table structures
> 
> On Thu, Dec 07, 2017 at 10:43:49PM +0000, Ben Hutchings wrote:
> > On Mon, 2017-12-04 at 16:59 +0100, Greg Kroah-Hartman wrote:
> > > 4.4-stable review patch.  If anyone has any objections, please let me
> know.
> > >
> > > ------------------
> > >
> > > From: Matt Fleming <[email protected]>
> > >
> > > commit 67a9108ed4313b85a9c53406d80dc1ae3f8c3e36 upstream.
> > [...]
> >
> > It looks like this will cause regressions unless you also apply:
> >
> > 21cdb6b56843 x86/mm: Page align the '_end' symbol to avoid pfn
> conversion bugs
> > b61a76f8850d x86/efi: Map RAM into the identity page table for mixed
> mode
> > 753b11ef8e92 x86/efi: Setup separate EFI page tables in kexec paths
> >
> > and possibly also:
> >
> > 08914f436bdd x86/platform/UV: Bring back the call to map_low_mmrs in
> uv_system_init
> > 683ad8092cd2 x86/efi: Fix 7-parameter efi_call()s
> > 80e75596079f efi: Convert efi_call_virt() to efi_call_virt_pointer()
> > d1be84a232e3 x86/uv: Update uv_bios_call() to use efi_call_virt_pointer()
> 
> Ugh, that's a mess.  Yazen is the one who reported this patch, and 2
> others, were needed to resolve an issue on their hardware.
> 
> Yazen, any thoughts here?  Should I just revert the 3 patches, or do you
> also feel I need all 7 of these to ensure everything works properly?
> 

I think it's okay to revert the 3 patches.

Thanks,
Yazen

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