diff mbox series

[4/4] arm64/sme: Fix some comments of ARM SME

Message ID 20230317124915.1263-5-sundongxu3@huawei.com
State New
Headers
Series arm64: Use specific checking for TPIDR2 and some comments update |

Commit Message

sundongxu (A) March 17, 2023, 12:49 p.m. UTC 
  When TIF_SME is clear, fpsimd_restore_current_state will disable
SME trap during ret_to_user, then SME access trap is impossible
in userspace, not SVE.

Besides, fix typo: alocated->allocated.

Signed-off-by: Dongxu Sun <sundongxu3@huawei.com>
---
 arch/arm64/kernel/fpsimd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Mark Brown March 17, 2023, 1:04 p.m. UTC | #1 
On Fri, Mar 17, 2023 at 08:49:15PM +0800, Dongxu Sun wrote:
> When TIF_SME is clear, fpsimd_restore_current_state will disable
> SME trap during ret_to_user, then SME access trap is impossible
> in userspace, not SVE.

Reviewed-by: Mark Brown <broonie@kernel.org>
diff mbox series

Patch

diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index 692dfefbe0ed..41b8f2052689 100644
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -299,7 +299,7 @@  void task_set_vl_onexec(struct task_struct *task, enum vec_type type,
 /*
  * TIF_SME controls whether a task can use SME without trapping while
  * in userspace, when TIF_SME is set then we must have storage
- * alocated in sve_state and sme_state to store the contents of both ZA
+ * allocated in sve_state and sme_state to store the contents of both ZA
  * and the SVE registers for both streaming and non-streaming modes.
  *
  * If both SVCR.ZA and SVCR.SM are disabled then at any point we
@@ -1477,7 +1477,7 @@  void do_sve_acc(unsigned long esr, struct pt_regs *regs)
  *
  * TIF_SME should be clear on entry: otherwise, fpsimd_restore_current_state()
  * would have disabled the SME access trap for userspace during
- * ret_to_user, making an SVE access trap impossible in that case.
+ * ret_to_user, making an SME access trap impossible in that case.
  */
 void do_sme_acc(unsigned long esr, struct pt_regs *regs)
 {