Commit b4725d3e authored by Mark Brown's avatar Mark Brown Committed by Catalin Marinas
Browse files

arm64/sve: Remove bitrotted comment about syscall behaviour 



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: default avatarEdmund Grimley-Evans <edmund.grimley-evans@arm.com>
Reviewed-by: default avatarDave Martin <Dave.Martin@arm.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240124-arm64-sve-sme-doc-v2-1-fe3964fb3c19@kernel.org


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 54be6c6c

Documentation/arch/arm64/sve.rst

+0 −5
Original line number Diff line number Diff line
@@ -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