[patch 113/192] x86/sgx: use vma_lookup() in sgx_encl_find()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Liam Howlett <liam.howlett@xxxxxxxxxx>
Subject: x86/sgx: use vma_lookup() in sgx_encl_find()

Use vma_lookup() to find the VMA at a specific address.  As vma_lookup()
will return NULL if the address is not within any VMA, the start address
no longer needs to be validated.

Link: https://lkml.kernel.org/r/20210521174745.2219620-10-Liam.Howlett@xxxxxxxxxx
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Reviewed-by: Laurent Dufour <ldufour@xxxxxxxxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Acked-by: Davidlohr Bueso <dbueso@xxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 arch/x86/kernel/cpu/sgx/encl.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/kernel/cpu/sgx/encl.h~x86-sgx-use-vma_lookup-in-sgx_encl_find
+++ a/arch/x86/kernel/cpu/sgx/encl.h
@@ -91,8 +91,8 @@ static inline int sgx_encl_find(struct m
 {
 	struct vm_area_struct *result;
 
-	result = find_vma(mm, addr);
-	if (!result || result->vm_ops != &sgx_vm_ops || addr < result->vm_start)
+	result = vma_lookup(mm, addr);
+	if (!result || result->vm_ops != &sgx_vm_ops)
 		return -EINVAL;
 
 	*vma = result;
_



[Index of Archives]     [Kernel Archive]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]

  Powered by Linux