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| author | Catalin Marinas <catalin.marinas@arm.com> | 2016-07-01 18:22:39 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2016-11-21 18:48:54 +0000 |
| commit | 786889636ad75296c213547d1ca656af4c59f390 (patch) | |
| tree | e8b249f00fbaf7a75dd05fa9d318d9a8f9c02f2c /arch/arm64/xen | |
| parent | 39bc88e5e38e9b213bd7d833ce0df6ec029761ad (diff) | |
| download | linux-786889636ad75296c213547d1ca656af4c59f390.tar.gz linux-786889636ad75296c213547d1ca656af4c59f390.tar.bz2 linux-786889636ad75296c213547d1ca656af4c59f390.zip | |
arm64: Handle faults caused by inadvertent user access with PAN enabled
When TTBR0_EL1 is set to the reserved page, an erroneous kernel access
to user space would generate a translation fault. This patch adds the
checks for the software-set PSR_PAN_BIT to emulate a permission fault
and report it accordingly.
Cc: Will Deacon <will.deacon@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/xen')
0 files changed, 0 insertions, 0 deletions