diff options
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/fault.c | 4 | ||||
| -rw-r--r-- | arch/s390/mm/init.c | 9 | ||||
| -rw-r--r-- | arch/s390/mm/pgalloc.c | 16 |
3 files changed, 21 insertions, 8 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index d56f67745e3e..dedc28be27ab 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -580,7 +580,7 @@ void do_dat_exception(struct pt_regs *regs) int access; vm_fault_t fault; - access = VM_READ | VM_EXEC | VM_WRITE; + access = VM_ACCESS_FLAGS; fault = do_exception(regs, access); if (unlikely(fault)) do_fault_error(regs, access, fault); @@ -852,9 +852,7 @@ void do_secure_storage_access(struct pt_regs *regs) BUG(); break; case VDSO_FAULT: - /* fallthrough */ case GMAP_FAULT: - /* fallthrough */ default: do_fault_error(regs, VM_READ | VM_WRITE, VM_FAULT_BADMAP); WARN_ON_ONCE(1); diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index ac44bd76db4b..87b2d024e75a 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -268,20 +268,23 @@ device_initcall(s390_cma_mem_init); #endif /* CONFIG_CMA */ int arch_add_memory(int nid, u64 start, u64 size, - struct mhp_restrictions *restrictions) + struct mhp_params *params) { unsigned long start_pfn = PFN_DOWN(start); unsigned long size_pages = PFN_DOWN(size); int rc; - if (WARN_ON_ONCE(restrictions->altmap)) + if (WARN_ON_ONCE(params->altmap)) + return -EINVAL; + + if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot)) return -EINVAL; rc = vmem_add_mapping(start, size); if (rc) return rc; - rc = __add_pages(nid, start_pfn, size_pages, restrictions); + rc = __add_pages(nid, start_pfn, size_pages, params); if (rc) vmem_remove_mapping(start, size); return rc; diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c index 498c98a312f4..fff169d64711 100644 --- a/arch/s390/mm/pgalloc.c +++ b/arch/s390/mm/pgalloc.c @@ -70,8 +70,20 @@ static void __crst_table_upgrade(void *arg) { struct mm_struct *mm = arg; - if (current->active_mm == mm) - set_user_asce(mm); + /* we must change all active ASCEs to avoid the creation of new TLBs */ + if (current->active_mm == mm) { + S390_lowcore.user_asce = mm->context.asce; + if (current->thread.mm_segment == USER_DS) { + __ctl_load(S390_lowcore.user_asce, 1, 1); + /* Mark user-ASCE present in CR1 */ + clear_cpu_flag(CIF_ASCE_PRIMARY); + } + if (current->thread.mm_segment == USER_DS_SACF) { + __ctl_load(S390_lowcore.user_asce, 7, 7); + /* enable_sacf_uaccess does all or nothing */ + WARN_ON(!test_cpu_flag(CIF_ASCE_SECONDARY)); + } + } __tlb_flush_local(); } |