arm64/fpsimd: Update documentation of do_sve_acc

Julien Grall · willdeacon · commit f186a84d8abe · 2020-09-21T18:06:32.000+01:00
fpsimd_restore_current_state() enables and disables the SVE access trap based on TIF_SVE, not task_fpsimd_load(). Update the documentation of do_sve_acc to reflect this behavior. Signed-off-by: Julien Grall <julien.grall@arm.com> Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Dave Martin <Dave.Martin@arm.com> Link: https://lore.kernel.org/r/20200828181155.17745-2-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org>
diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
@@ -928,7 +928,7 @@ void fpsimd_release_task(struct task_struct *dead_task)
  * the SVE access trap will be disabled the next time this task
  * reaches ret_to_user.
  *
- * TIF_SVE should be clear on entry: otherwise, task_fpsimd_load()
+ * TIF_SVE should be clear on entry: otherwise, fpsimd_restore_current_state()
  * would have disabled the SVE access trap for userspace during
  * ret_to_user, making an SVE access trap impossible in that case.
  */

Original file line number	Diff line number	Diff line change
`@@ -928,7 +928,7 @@ void fpsimd_release_task(struct task_struct *dead_task)`
`928`	`928`	`* the SVE access trap will be disabled the next time this task`
`929`	`929`	`* reaches ret_to_user.`
`930`	`930`	`*`
`931`		`- * TIF_SVE should be clear on entry: otherwise, task_fpsimd_load()`
	`931`	`+ * TIF_SVE should be clear on entry: otherwise, fpsimd_restore_current_state()`
`932`	`932`	`* would have disabled the SVE access trap for userspace during`
`933`	`933`	`* ret_to_user, making an SVE access trap impossible in that case.`
`934`	`934`	`*/`