From:   Dongxu Sun <sundongxu3@huawei.com>
To:     <catalin.marinas@arm.com>, <will@kernel.org>, <broonie@kernel.org>
CC:     <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <wanghaibin.wang@huawei.com>,
        Dongxu Sun <sundongxu3@huawei.com>
Subject: [PATCH 4/4] arm64/sme: Fix some comments of ARM SME
Date:   Fri, 17 Mar 2023 20:49:15 +0800
Message-ID: <20230317124915.1263-5-sundongxu3@huawei.com>
In-Reply-To: <20230317124915.1263-1-sundongxu3@huawei.com>
References: <20230317124915.1263-1-sundongxu3@huawei.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7BIT
Content-Type:   text/plain; charset=US-ASCII
Precedence: bulk

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(-)

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)
 {
-- 
2.33.0