swh:1:snp:49cd9498d6cccc5e78252c27dcb645bcf7bf0c91
Revision 8e620b0476696e9428442d3551f3dad47df0e28f authored by Catalin Marinas on 15 November 2012, 17:21:16 UTC, committed by Catalin Marinas on 16 November 2012, 15:50:25 UTC
On AArch64, the meaning of the XN bit has changed to UXN (user). The PXN
(privileged) bit must be set to prevent kernel execution. Without the
PXN bit set, the CPU may speculatively access device memory. This patch
ensures that all the mappings that the kernel must not execute from
(including user mappings) have the PXN bit set.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
1 parent 77b6706
History
Tip revision: 644e9524388a5dbc6d4f58c492ee9ef7bd4ddf4d authored by Linus Torvalds on 26 November 2022, 02:02:49 UTC
Merge tag 'for-v6.1-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Tip revision: 644e952
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.gitignore -rw-r--r-- 1.1 KB
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