diff mbox series

[1/4] arm64/signal: Use system_supports_tpidr2() to check TPIDR2

Message ID 20230317124915.1263-2-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 
  Since commit a9d6915859501("arm64/sme: Implement support
for TPIDR2"), We introduced system_supports_tpidr2() for
TPIDR2 handling. Let's use the specific check instead.

No functional changes.

Signed-off-by: Dongxu Sun <sundongxu3@huawei.com>
---
 arch/arm64/kernel/signal.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Mark Brown March 17, 2023, 12:53 p.m. UTC | #1 
On Fri, Mar 17, 2023 at 08:49:12PM +0800, Dongxu Sun wrote:
> Since commit a9d6915859501("arm64/sme: Implement support
> for TPIDR2"), We introduced system_supports_tpidr2() for
> TPIDR2 handling. Let's use the specific check instead.

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

Patch

diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index 06a02707f488..032e97f8cae0 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -651,7 +651,7 @@  static int parse_user_sigframe(struct user_ctxs *user,
 			break;
 
 		case TPIDR2_MAGIC:
-			if (!system_supports_sme())
+			if (!system_supports_tpidr2())
 				goto invalid;
 
 			if (user->tpidr2)
@@ -802,7 +802,7 @@  static int restore_sigframe(struct pt_regs *regs,
 			err = restore_fpsimd_context(&user);
 	}
 
-	if (err == 0 && system_supports_sme() && user.tpidr2)
+	if (err == 0 && system_supports_tpidr2() && user.tpidr2)
 		err = restore_tpidr2_context(&user);
 
 	if (err == 0 && system_supports_sme() && user.za)
@@ -974,7 +974,7 @@  static int setup_sigframe(struct rt_sigframe_user_layout *user,
 	}
 
 	/* TPIDR2 if supported */
-	if (system_supports_sme() && err == 0) {
+	if (system_supports_tpidr2() && err == 0) {
 		struct tpidr2_context __user *tpidr2_ctx =
 			apply_user_offset(user, user->tpidr2_offset);
 		err |= preserve_tpidr2_context(tpidr2_ctx);