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authorMarc Zyngier <maz@kernel.org>2022-06-30 19:04:58 +0300
committerWill Deacon <will@kernel.org>2022-07-01 17:22:52 +0300
commitb3000e2133d878e586416e440642ca82d234c6fb (patch)
treebb778e096fe862d356c0df3c5ce27933098e4913 /Documentation/admin-guide
parent6ab7661e1d3930edc8462099f047ca2cfdbd343a (diff)
downloadlinux-b3000e2133d878e586416e440642ca82d234c6fb.tar.xz
arm64: Add the arm64.nosme command line option
In order to be able to completely disable SME even if the HW seems to support it (most likely because the FW is broken), move the SME setup into the EL2 finalisation block, and use a new idreg override to deal with it. Note that we also nuke id_aa64smfr0_el1 as a byproduct. Signed-off-by: Marc Zyngier <maz@kernel.org> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20220630160500.1536744-8-maz@kernel.org Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'Documentation/admin-guide')
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 2522b11e593f..301d2d0fee80 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -400,6 +400,9 @@
arm64.nomte [ARM64] Unconditionally disable Memory Tagging Extension
support
+ arm64.nosme [ARM64] Unconditionally disable Scalable Matrix
+ Extension support
+
ataflop= [HW,M68k]
atarimouse= [HW,MOUSE] Atari Mouse