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| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2020-11-27 10:14:17 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-12-04 01:01:26 +1100 |
| commit | 4d6c551e9f548f7675a01eff229d09ab41162a25 (patch) | |
| tree | 401c9a20fe6ea4335b9c9dfbecd2faf12dc3b838 /tools/perf/scripts/python | |
| parent | powerpc/book3s64/pkeys: Don't update SPRN_AMR when in kernel mode. (diff) | |
| download | linux-4d6c551e9f548f7675a01eff229d09ab41162a25.tar.gz linux-4d6c551e9f548f7675a01eff229d09ab41162a25.zip | |
powerpc/book3s64/kuap: Restrict access to userspace based on userspace AMR
If an application has configured address protection such that read/write is
denied using pkey even the kernel should receive a FAULT on accessing the same.
This patch use user AMR value stored in pt_regs.amr to achieve the same.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201127044424.40686-16-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions