-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
powerpc: Add framework for Kernel Userspace Protection
This patch adds a skeleton for Kernel Userspace Protection functionnalities like Kernel Userspace Access Protection and Kernel Userspace Execution Prevention The subsequent implementation of KUAP for radix makes use of a MMU feature in order to patch out assembly when KUAP is disabled or unsupported. This won't work unless there's an entry point for KUP support before the feature magic happens, so for PPC64 setup_kup() is called early in setup. On PPC32, feature_fixup() is done too early to allow the same. Suggested-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
- Loading branch information
Christophe Leroy
authored and
Michael Ellerman
committed
Apr 21, 2019
1 parent
53a712b
commit 69795ca
Showing
4 changed files
with
26 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,11 @@ | ||
/* SPDX-License-Identifier: GPL-2.0 */ | ||
#ifndef _ASM_POWERPC_KUP_H_ | ||
#define _ASM_POWERPC_KUP_H_ | ||
|
||
#ifndef __ASSEMBLY__ | ||
|
||
void setup_kup(void); | ||
|
||
#endif /* !__ASSEMBLY__ */ | ||
|
||
#endif /* _ASM_POWERPC_KUP_H_ */ |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters