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[3/3] mm/s390: Define private VM_FAULT_* reasons from top bits

Message ID 20230205231704.909536-4-peterx@redhat.com (mailing list archive)
State New
Headers show
Series mm/arch: Fix a few collide definition on private use of VM_FAULT_* | expand

Commit Message

Peter Xu Feb. 5, 2023, 11:17 p.m. UTC 
The current definition already collapse with the generic definition of
vm_fault_reason.  Move the private definitions to allocate bits from the
top of uint so they won't collapse anymore.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 arch/s390/mm/fault.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

Comments

Heiko Carstens Feb. 9, 2023, 8:10 p.m. UTC | #1 
On Sun, Feb 05, 2023 at 06:17:04PM -0500, Peter Xu wrote:
> The current definition already collapse with the generic definition of
> vm_fault_reason.  Move the private definitions to allocate bits from the
> top of uint so they won't collapse anymore.
> 
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
>  arch/s390/mm/fault.c | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)

Thanks a lot!

Applied.
diff mbox series

Patch

diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 9649d9382e0a..cebfbd6dcbaf 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -46,11 +46,15 @@ 
 #define __SUBCODE_MASK 0x0600
 #define __PF_RES_FIELD 0x8000000000000000ULL
 
-#define VM_FAULT_BADCONTEXT	((__force vm_fault_t) 0x010000)
-#define VM_FAULT_BADMAP		((__force vm_fault_t) 0x020000)
-#define VM_FAULT_BADACCESS	((__force vm_fault_t) 0x040000)
-#define VM_FAULT_SIGNAL		((__force vm_fault_t) 0x080000)
-#define VM_FAULT_PFAULT		((__force vm_fault_t) 0x100000)
+/*
+ * Allocate private vm_fault_reason from top.  Please make sure it won't
+ * collide with vm_fault_reason.
+ */
+#define VM_FAULT_BADCONTEXT	((__force vm_fault_t) 0x80000000)
+#define VM_FAULT_BADMAP		((__force vm_fault_t) 0x40000000)
+#define VM_FAULT_BADACCESS	((__force vm_fault_t) 0x20000000)
+#define VM_FAULT_SIGNAL		((__force vm_fault_t) 0x10000000)
+#define VM_FAULT_PFAULT		((__force vm_fault_t) 0x8000000)
 
 enum fault_type {
 	KERNEL_FAULT,