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| author | Steven Price <steven.price@arm.com> | 2021-06-21 12:17:16 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-06-22 14:08:07 +0100 |
| commit | 04c02c201d7e8149ae336ead69fb64e4e6f94bc9 (patch) | |
| tree | 9698793cc6672d5a424a06bd84b3dc71731438a2 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | f0376edb1ddcab19a473b4bf1fbd5b6bbed3705b (diff) | |
| download | lwn-04c02c201d7e8149ae336ead69fb64e4e6f94bc9.tar.gz lwn-04c02c201d7e8149ae336ead69fb64e4e6f94bc9.zip | |
KVM: arm64: Document MTE capability and ioctl
A new capability (KVM_CAP_ARM_MTE) identifies that the kernel supports
granting a guest access to the tags, and provides a mechanism for the
VMM to enable it.
A new ioctl (KVM_ARM_MTE_COPY_TAGS) provides a simple way for a VMM to
access the tags of a guest without having to maintain a PROT_MTE mapping
in userspace. The above capability gates access to the ioctl.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210621111716.37157-7-steven.price@arm.com
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
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