Re: [Xen-devel] [edk2] [PATCH RFC 03/14] OvmfPkg/XenOvmf.dsc: Introduce XenResetVector

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Wed, Jan 04, 2017 at 08:49:15PM +0100, Laszlo Ersek wrote:
> > diff --git a/OvmfPkg/XenResetVector/Ia32/PageTables64.asm 
> > b/OvmfPkg/XenResetVector/Ia32/PageTables64.asm
> > new file mode 100644
> > index 0000000..b5a4cf8
> > --- /dev/null
> > +++ b/OvmfPkg/XenResetVector/Ia32/PageTables64.asm
> > @@ -0,0 +1,93 @@
> > +;------------------------------------------------------------------------------
> > +; @file
> > +; Sets the CR3 register for 64-bit paging
> > +;
> > +; Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
> > +; This program and the accompanying materials
> > +; are licensed and made available under the terms and conditions of the 
> > BSD License
> > +; which accompanies this distribution.  The full text of the license may 
> > be found at
> > +; http://opensource.org/licenses/bsd-license.php
> > +;
> > +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> > +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
> > IMPLIED.
> > +;
> > +;------------------------------------------------------------------------------
> > +
> > +BITS    32
> > +
> > +%define PAGE_PRESENT            0x01
> > +%define PAGE_READ_WRITE         0x02
> > +%define PAGE_USER_SUPERVISOR    0x04
> > +%define PAGE_WRITE_THROUGH      0x08
> > +%define PAGE_CACHE_DISABLE     0x010
> > +%define PAGE_ACCESSED          0x020
> > +%define PAGE_DIRTY             0x040
> > +%define PAGE_PAT               0x080
> > +%define PAGE_GLOBAL           0x0100
> > +%define PAGE_2M_MBO            0x080
> > +%define PAGE_2M_PAT          0x01000
> > +
> > +%define PAGE_2M_PDE_ATTR (PAGE_2M_MBO + \
> > +                          PAGE_ACCESSED + \
> > +                          PAGE_DIRTY + \
> > +                          PAGE_READ_WRITE + \
> > +                          PAGE_PRESENT)
> > +
> > +%define PAGE_PDP_ATTR (PAGE_ACCESSED + \
> > +                       PAGE_READ_WRITE + \
> > +                       PAGE_PRESENT)
> > +
> > +
> > +;
> > +; Modified:  EAX, ECX
> > +;
> > +SetCr3ForPageTables64:
> > +
> > +    ;
> > +    ; For OVMF, build some initial page tables at 0x800000-0x806000.
> 
> (6) Are you intentionally undoing, in the copy, commit 73d66c5871cc? If
> so, why?

No, I just need to use --find-copies-harder to find out about recent
changes.

> For now I suspect that you originally created this patch before commit
> 73d66c5871cc came into existence. If that's the case, then please rebase
> (re-copy and customize) this patch to the most recent ResetVector state,
> including commit 73d66c5871cc.

I don't think I've customize this file, this could be a link, or I could
try to have the build system use the original file from
OvmfPkg/ResetVector.

Thanks,

-- 
Anthony PERARD

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