linux-kernel - [PATCH 1/4] arm64/signal: Use system_supports

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Date:   Fri, 17 Mar 2023 20:49:12 +0800
From:   Dongxu Sun <sundongxu3@...wei.com>
To:     <catalin.marinas@....com>, <will@...nel.org>, <broonie@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <wanghaibin.wang@...wei.com>,
        Dongxu Sun <sundongxu3@...wei.com>
Subject: [PATCH 1/4] arm64/signal: Use system_supports_tpidr2() to check TPIDR2

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@...wei.com>
---
 arch/arm64/kernel/signal.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

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);
-- 
2.33.0