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arm64/sve: Remove bitrotted comment about syscall behaviour

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When we documented that we always clear state not shared with FPSIMD we
didn't catch all of the places that mentioned that state might not be
cleared, remove a lingering reference.

Reported-by: Edmund Grimley-Evans <edmund.grimley-evans@arm.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240124-arm64-sve-sme-doc-v2-1-fe3964fb3c19@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2024-01-24 18:12:35 +00:00 • committed by Catalin Marinas
parent 54be6c6c5a
commit b4725d3e46
1 changed files with 0 additions and 5 deletions
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5
Documentation/arch/arm64/sve.rst
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@ -117,11 +117,6 @@ the SVE instruction set architecture.
* The SVE registers are not used to pass arguments to or receive results from
any syscall.
* In practice the affected registers/bits will be preserved or will be replaced
with zeros on return from a syscall, but userspace should not make
assumptions about this. The kernel behaviour may vary on a case-by-case
basis.
* All other SVE state of a thread, including the currently configured vector
length, the state of the PR_SVE_VL_INHERIT flag, and the deferred vector
length (if any), is preserved across all syscalls, subject to the specific