linux-kernel - [PATCH 2/5] x86/sgx: use VM_ACCESS

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Message-ID: <20221019034945.93081-3-wangkefeng.wang@huawei.com>
Date:   Wed, 19 Oct 2022 11:49:42 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
CC:     Dinh Nguyen <dinguyen@...nel.org>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        <linux-sgx@...r.kernel.org>, <amd-gfx@...ts.freedesktop.org>,
        <linux-mm@...ck.org>, Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH 2/5] x86/sgx: use VM_ACCESS_FLAGS

Simplify VM_READ|VM_WRITE|VM_EXEC with VM_ACCESS_FLAGS.

Cc: Jarkko Sakkinen <jarkko@...nel.org>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 arch/x86/kernel/cpu/sgx/encl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/sgx/encl.c b/arch/x86/kernel/cpu/sgx/encl.c
index 1ec20807de1e..6225c525372d 100644
--- a/arch/x86/kernel/cpu/sgx/encl.c
+++ b/arch/x86/kernel/cpu/sgx/encl.c
@@ -268,7 +268,7 @@ static struct sgx_encl_page *sgx_encl_load_page_in_vma(struct sgx_encl *encl,
 						       unsigned long addr,
 						       unsigned long vm_flags)
 {
-	unsigned long vm_prot_bits = vm_flags & (VM_READ | VM_WRITE | VM_EXEC);
+	unsigned long vm_prot_bits = vm_flags & VM_ACCESS_FLAGS;
 	struct sgx_encl_page *entry;
 
 	entry = xa_load(&encl->page_array, PFN_DOWN(addr));
@@ -502,7 +502,7 @@ static void sgx_vma_open(struct vm_area_struct *vma)
 int sgx_encl_may_map(struct sgx_encl *encl, unsigned long start,
 		     unsigned long end, unsigned long vm_flags)
 {
-	unsigned long vm_prot_bits = vm_flags & (VM_READ | VM_WRITE | VM_EXEC);
+	unsigned long vm_prot_bits = vm_flags & VM_ACCESS_FLAGS;
 	struct sgx_encl_page *page;
 	unsigned long count = 0;
 	int ret = 0;
-- 
2.35.3