Re: [PATCH 05/30] x86, kaiser: prepare assembly for entry/exit CR3 switching

[Borislav Petkov]

On Wed, Nov 08, 2017 at 11:46:54AM -0800, Dave Hansen wrote:
> From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
> 
> This is largely code from Andy Lutomirski.  I fixed a few bugs
> in it, and added a few SWITCH_TO_* spots.

...

> Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
> Cc: Moritz Lipp <moritz.lipp@xxxxxxxxxxxxxx>
> Cc: Daniel Gruss <daniel.gruss@xxxxxxxxxxxxxx>
> Cc: Michael Schwarz <michael.schwarz@xxxxxxxxxxxxxx>
> Cc: Richard Fellner <richard.fellner@xxxxxxxxxxxxxxxxx>
> Cc: Andy Lutomirski <luto@xxxxxxxxxx>
> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> Cc: Kees Cook <keescook@xxxxxxxxxx>
> Cc: Hugh Dickins <hughd@xxxxxxxxxx>
> Cc: x86@xxxxxxxxxx
> ---
> 
>  b/arch/x86/entry/calling.h         |   65 +++++++++++++++++++++++++++++++++++++
>  b/arch/x86/entry/entry_64.S        |   30 ++++++++++++++---
>  b/arch/x86/entry/entry_64_compat.S |    8 ++++
>  3 files changed, 98 insertions(+), 5 deletions(-)

What branch is that one against?

It doesn't apply cleanly against tip:x86/asm from today:

patching file arch/x86/entry/calling.h
Hunk #1 succeeded at 2 with fuzz 1 (offset 1 line).
Hunk #2 succeeded at 188 (offset 1 line).
patching file arch/x86/entry/entry_64_compat.S
Hunk #1 succeeded at 92 (offset 1 line).
Hunk #2 succeeded at 218 (offset 1 line).
Hunk #3 succeeded at 246 (offset 1 line).
Hunk #4 FAILED at 330.
1 out of 4 hunks FAILED -- saving rejects to file arch/x86/entry/entry_64_compat.S.rej
patching file arch/x86/entry/entry_64.S
Hunk #1 succeeded at 148 (offset 1 line).
Hunk #2 succeeded at 168 (offset 1 line).
Hunk #3 succeeded at 508 with fuzz 2 (offset 163 lines).
Hunk #4 FAILED at 685.
Hunk #5 succeeded at 1119 (offset -54 lines).
Hunk #6 succeeded at 1145 (offset -54 lines).
Hunk #7 succeeded at 1174 (offset -54 lines).
Hunk #8 succeeded at 1223 (offset -54 lines).
Hunk #9 succeeded at 1350 (offset -54 lines).
Hunk #10 succeeded at 1575 (offset -54 lines).
1 out of 10 hunks FAILED -- saving rejects to file arch/x86/entry/entry_64.S.rej

-- 
Regards/Gruss,
    Boris.

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