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authorLinus Torvalds <torvalds@linux-foundation.org>2020-04-04 19:45:50 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-04 19:45:50 +0300
commitad0bf4eb91c2f9b93479b679e5472094ddb76da8 (patch)
tree4025ab22e3ea949259a5078d06cf7a75afbb8ed3 /arch/s390/mm/fault.c
parent5364abc57993b3bf60c41923cb98a8f1a594e749 (diff)
parent1058c163dc31b3335c9cf7c4fa42ccf87be73017 (diff)
downloadlinux-ad0bf4eb91c2f9b93479b679e5472094ddb76da8.tar.xz
Merge tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik: - Update maintainers. Niklas Schnelle takes over zpci and Vineeth Vijayan common io code. - Extend cpuinfo to include topology information. - Add new extended counters for IBM z15 and sampling buffer allocation rework in perf code. - Add control over zeroing out memory during system restart. - CCA protected key block version 2 support and other fixes/improvements in crypto code. - Convert to new fallthrough; annotations. - Replace zero-length arrays with flexible-arrays. - QDIO debugfs and other small improvements. - Drop 2-level paging support optimization for compat tasks. Varios mm cleanups. - Remove broken and unused hibernate / power management support. - Remove fake numa support which does not bring any benefits. - Exclude offline CPUs from CPU topology masks to be more consistent with other architectures. - Prevent last branching instruction address leaking to userspace. - Other small various fixes and improvements all over the code. * tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (57 commits) s390/mm: cleanup init_new_context() callback s390/mm: cleanup virtual memory constants usage s390/mm: remove page table downgrade support s390/qdio: set qdio_irq->cdev at allocation time s390/qdio: remove unused function declarations s390/ccwgroup: remove pm support s390/ap: remove power management code from ap bus and drivers s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc s390/mm: cleanup arch_get_unmapped_area() and friends s390/ism: remove pm support s390/cio: use fallthrough; s390/vfio: use fallthrough; s390/zcrypt: use fallthrough; s390: use fallthrough; s390/cpum_sf: Fix wrong page count in error message s390/diag: fix display of diagnose call statistics s390/ap: Remove ap device suspend and resume callbacks s390/pci: Improve handling of unset UID s390/pci: Fix zpci_alloc_domain() over allocation s390/qdio: pass ISC as parameter to chsc_sadc() ...
Diffstat (limited to 'arch/s390/mm/fault.c')
-rw-r--r--arch/s390/mm/fault.c21
1 files changed, 10 insertions, 11 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 09bf7f2121ac..d56f67745e3e 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -45,11 +45,11 @@
#define __SUBCODE_MASK 0x0600
#define __PF_RES_FIELD 0x8000000000000000ULL
-#define VM_FAULT_BADCONTEXT 0x010000
-#define VM_FAULT_BADMAP 0x020000
-#define VM_FAULT_BADACCESS 0x040000
-#define VM_FAULT_SIGNAL 0x080000
-#define VM_FAULT_PFAULT 0x100000
+#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)
enum fault_type {
KERNEL_FAULT,
@@ -123,7 +123,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address)
if (*table & _REGION_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
- /* fallthrough */
+ fallthrough;
case _ASCE_TYPE_REGION2:
table += (address & _REGION2_INDEX) >> _REGION2_SHIFT;
if (bad_address(table))
@@ -132,7 +132,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address)
if (*table & _REGION_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
- /* fallthrough */
+ fallthrough;
case _ASCE_TYPE_REGION3:
table += (address & _REGION3_INDEX) >> _REGION3_SHIFT;
if (bad_address(table))
@@ -141,7 +141,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address)
if (*table & (_REGION_ENTRY_INVALID | _REGION3_ENTRY_LARGE))
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
- /* fallthrough */
+ fallthrough;
case _ASCE_TYPE_SEGMENT:
table += (address & _SEGMENT_INDEX) >> _SEGMENT_SHIFT;
if (bad_address(table))
@@ -328,7 +328,7 @@ static noinline void do_fault_error(struct pt_regs *regs, int access,
case VM_FAULT_BADACCESS:
if (access == VM_EXEC && signal_return(regs) == 0)
break;
- /* fallthrough */
+ fallthrough;
case VM_FAULT_BADMAP:
/* Bad memory access. Check if it is kernel or user space. */
if (user_mode(regs)) {
@@ -338,9 +338,8 @@ static noinline void do_fault_error(struct pt_regs *regs, int access,
do_sigsegv(regs, si_code);
break;
}
- /* fallthrough */
+ fallthrough;
case VM_FAULT_BADCONTEXT:
- /* fallthrough */
case VM_FAULT_PFAULT:
do_no_context(regs);
break;