x86/sgx: use VM_ACCESS_FLAGS

Simplify VM_READ|VM_WRITE|VM_EXEC with VM_ACCESS_FLAGS.

Link: https://lkml.kernel.org/r/20221019034945.93081-3-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/arch/x86/kernel/cpu/sgx/encl.c b/arch/x86/kernel/cpu/sgx/encl.c
index 1ec2080..6225c52 100644 (file)
--- 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;