summaryrefslogtreecommitdiffstats
path: root/arch/s390/mm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/mm')
-rw-r--r--arch/s390/mm/dump_pagetables.c18
-rw-r--r--arch/s390/mm/fault.c4
-rw-r--r--arch/s390/mm/gup.c6
-rw-r--r--arch/s390/mm/hugetlbpage.c124
-rw-r--r--arch/s390/mm/init.c1
-rw-r--r--arch/s390/mm/pageattr.c2
-rw-r--r--arch/s390/mm/pgtable.c87
-rw-r--r--arch/s390/mm/vmem.c15
8 files changed, 182 insertions, 75 deletions
diff --git a/arch/s390/mm/dump_pagetables.c b/arch/s390/mm/dump_pagetables.c
index 3ad65b04ac1..46d517c3c76 100644
--- a/arch/s390/mm/dump_pagetables.c
+++ b/arch/s390/mm/dump_pagetables.c
@@ -53,7 +53,7 @@ static void print_prot(struct seq_file *m, unsigned int pr, int level)
seq_printf(m, "I\n");
return;
}
- seq_printf(m, "%s", pr & _PAGE_RO ? "RO " : "RW ");
+ seq_printf(m, "%s", pr & _PAGE_PROTECT ? "RO " : "RW ");
seq_printf(m, "%s", pr & _PAGE_CO ? "CO " : " ");
seq_putc(m, '\n');
}
@@ -105,12 +105,12 @@ static void note_page(struct seq_file *m, struct pg_state *st,
}
/*
- * The actual page table walker functions. In order to keep the implementation
- * of print_prot() short, we only check and pass _PAGE_INVALID and _PAGE_RO
- * flags to note_page() if a region, segment or page table entry is invalid or
- * read-only.
- * After all it's just a hint that the current level being walked contains an
- * invalid or read-only entry.
+ * The actual page table walker functions. In order to keep the
+ * implementation of print_prot() short, we only check and pass
+ * _PAGE_INVALID and _PAGE_PROTECT flags to note_page() if a region,
+ * segment or page table entry is invalid or read-only.
+ * After all it's just a hint that the current level being walked
+ * contains an invalid or read-only entry.
*/
static void walk_pte_level(struct seq_file *m, struct pg_state *st,
pmd_t *pmd, unsigned long addr)
@@ -122,14 +122,14 @@ static void walk_pte_level(struct seq_file *m, struct pg_state *st,
for (i = 0; i < PTRS_PER_PTE && addr < max_addr; i++) {
st->current_address = addr;
pte = pte_offset_kernel(pmd, addr);
- prot = pte_val(*pte) & (_PAGE_RO | _PAGE_INVALID);
+ prot = pte_val(*pte) & (_PAGE_PROTECT | _PAGE_INVALID);
note_page(m, st, prot, 4);
addr += PAGE_SIZE;
}
}
#ifdef CONFIG_64BIT
-#define _PMD_PROT_MASK (_SEGMENT_ENTRY_RO | _SEGMENT_ENTRY_CO)
+#define _PMD_PROT_MASK (_SEGMENT_ENTRY_PROTECT | _SEGMENT_ENTRY_CO)
#else
#define _PMD_PROT_MASK 0
#endif
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 047c3e4c59a..f00aefb66a4 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -639,8 +639,8 @@ out:
put_task_struct(tsk);
}
-static int __cpuinit pfault_cpu_notify(struct notifier_block *self,
- unsigned long action, void *hcpu)
+static int pfault_cpu_notify(struct notifier_block *self, unsigned long action,
+ void *hcpu)
{
struct thread_struct *thread, *next;
struct task_struct *tsk;
diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c
index 1f5315d1215..5d758db27bd 100644
--- a/arch/s390/mm/gup.c
+++ b/arch/s390/mm/gup.c
@@ -24,7 +24,7 @@ static inline int gup_pte_range(pmd_t *pmdp, pmd_t pmd, unsigned long addr,
pte_t *ptep, pte;
struct page *page;
- mask = (write ? _PAGE_RO : 0) | _PAGE_INVALID | _PAGE_SPECIAL;
+ mask = (write ? _PAGE_PROTECT : 0) | _PAGE_INVALID | _PAGE_SPECIAL;
ptep = ((pte_t *) pmd_deref(pmd)) + pte_index(addr);
do {
@@ -55,8 +55,8 @@ static inline int gup_huge_pmd(pmd_t *pmdp, pmd_t pmd, unsigned long addr,
struct page *head, *page, *tail;
int refs;
- result = write ? 0 : _SEGMENT_ENTRY_RO;
- mask = result | _SEGMENT_ENTRY_INV;
+ result = write ? 0 : _SEGMENT_ENTRY_PROTECT;
+ mask = result | _SEGMENT_ENTRY_INVALID;
if ((pmd_val(pmd) & mask) != result)
return 0;
VM_BUG_ON(!pfn_valid(pmd_val(pmd) >> PAGE_SHIFT));
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index 121089d5780..248445f9260 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -8,21 +8,127 @@
#include <linux/mm.h>
#include <linux/hugetlb.h>
+static inline pmd_t __pte_to_pmd(pte_t pte)
+{
+ int none, young, prot;
+ pmd_t pmd;
+
+ /*
+ * Convert encoding pte bits pmd bits
+ * .IR...wrdytp ..R...I...y.
+ * empty .10...000000 -> ..0...1...0.
+ * prot-none, clean, old .11...000001 -> ..0...1...1.
+ * prot-none, clean, young .11...000101 -> ..1...1...1.
+ * prot-none, dirty, old .10...001001 -> ..0...1...1.
+ * prot-none, dirty, young .10...001101 -> ..1...1...1.
+ * read-only, clean, old .11...010001 -> ..1...1...0.
+ * read-only, clean, young .01...010101 -> ..1...0...1.
+ * read-only, dirty, old .11...011001 -> ..1...1...0.
+ * read-only, dirty, young .01...011101 -> ..1...0...1.
+ * read-write, clean, old .11...110001 -> ..0...1...0.
+ * read-write, clean, young .01...110101 -> ..0...0...1.
+ * read-write, dirty, old .10...111001 -> ..0...1...0.
+ * read-write, dirty, young .00...111101 -> ..0...0...1.
+ * Huge ptes are dirty by definition, a clean pte is made dirty
+ * by the conversion.
+ */
+ if (pte_present(pte)) {
+ pmd_val(pmd) = pte_val(pte) & PAGE_MASK;
+ if (pte_val(pte) & _PAGE_INVALID)
+ pmd_val(pmd) |= _SEGMENT_ENTRY_INVALID;
+ none = (pte_val(pte) & _PAGE_PRESENT) &&
+ !(pte_val(pte) & _PAGE_READ) &&
+ !(pte_val(pte) & _PAGE_WRITE);
+ prot = (pte_val(pte) & _PAGE_PROTECT) &&
+ !(pte_val(pte) & _PAGE_WRITE);
+ young = pte_val(pte) & _PAGE_YOUNG;
+ if (none || young)
+ pmd_val(pmd) |= _SEGMENT_ENTRY_YOUNG;
+ if (prot || (none && young))
+ pmd_val(pmd) |= _SEGMENT_ENTRY_PROTECT;
+ } else
+ pmd_val(pmd) = _SEGMENT_ENTRY_INVALID;
+ return pmd;
+}
+
+static inline pte_t __pmd_to_pte(pmd_t pmd)
+{
+ pte_t pte;
+
+ /*
+ * Convert encoding pmd bits pte bits
+ * ..R...I...y. .IR...wrdytp
+ * empty ..0...1...0. -> .10...000000
+ * prot-none, old ..0...1...1. -> .10...001001
+ * prot-none, young ..1...1...1. -> .10...001101
+ * read-only, old ..1...1...0. -> .11...011001
+ * read-only, young ..1...0...1. -> .01...011101
+ * read-write, old ..0...1...0. -> .10...111001
+ * read-write, young ..0...0...1. -> .00...111101
+ * Huge ptes are dirty by definition
+ */
+ if (pmd_present(pmd)) {
+ pte_val(pte) = _PAGE_PRESENT | _PAGE_LARGE | _PAGE_DIRTY |
+ (pmd_val(pmd) & PAGE_MASK);
+ if (pmd_val(pmd) & _SEGMENT_ENTRY_INVALID)
+ pte_val(pte) |= _PAGE_INVALID;
+ if (pmd_prot_none(pmd)) {
+ if (pmd_val(pmd) & _SEGMENT_ENTRY_PROTECT)
+ pte_val(pte) |= _PAGE_YOUNG;
+ } else {
+ pte_val(pte) |= _PAGE_READ;
+ if (pmd_val(pmd) & _SEGMENT_ENTRY_PROTECT)
+ pte_val(pte) |= _PAGE_PROTECT;
+ else
+ pte_val(pte) |= _PAGE_WRITE;
+ if (pmd_val(pmd) & _SEGMENT_ENTRY_YOUNG)
+ pte_val(pte) |= _PAGE_YOUNG;
+ }
+ } else
+ pte_val(pte) = _PAGE_INVALID;
+ return pte;
+}
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
- pte_t *pteptr, pte_t pteval)
+ pte_t *ptep, pte_t pte)
{
- pmd_t *pmdp = (pmd_t *) pteptr;
- unsigned long mask;
+ pmd_t pmd;
+ pmd = __pte_to_pmd(pte);
if (!MACHINE_HAS_HPAGE) {
- pteptr = (pte_t *) pte_page(pteval)[1].index;
- mask = pte_val(pteval) &
- (_SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO);
- pte_val(pteval) = (_SEGMENT_ENTRY + __pa(pteptr)) | mask;
+ pmd_val(pmd) &= ~_SEGMENT_ENTRY_ORIGIN;
+ pmd_val(pmd) |= pte_page(pte)[1].index;
+ } else
+ pmd_val(pmd) |= _SEGMENT_ENTRY_LARGE | _SEGMENT_ENTRY_CO;
+ *(pmd_t *) ptep = pmd;
+}
+
+pte_t huge_ptep_get(pte_t *ptep)
+{
+ unsigned long origin;
+ pmd_t pmd;
+
+ pmd = *(pmd_t *) ptep;
+ if (!MACHINE_HAS_HPAGE && pmd_present(pmd)) {
+ origin = pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN;
+ pmd_val(pmd) &= ~_SEGMENT_ENTRY_ORIGIN;
+ pmd_val(pmd) |= *(unsigned long *) origin;
}
+ return __pmd_to_pte(pmd);
+}
- pmd_val(*pmdp) = pte_val(pteval);
+pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep)
+{
+ pmd_t *pmdp = (pmd_t *) ptep;
+ pte_t pte = huge_ptep_get(ptep);
+
+ if (MACHINE_HAS_IDTE)
+ __pmd_idte(addr, pmdp);
+ else
+ __pmd_csp(pmdp);
+ pmd_val(*pmdp) = _SEGMENT_ENTRY_EMPTY;
+ return pte;
}
int arch_prepare_hugepage(struct page *page)
@@ -58,7 +164,7 @@ void arch_release_hugepage(struct page *page)
ptep = (pte_t *) page[1].index;
if (!ptep)
return;
- clear_table((unsigned long *) ptep, _PAGE_TYPE_EMPTY,
+ clear_table((unsigned long *) ptep, _PAGE_INVALID,
PTRS_PER_PTE * sizeof(pte_t));
page_table_free(&init_mm, (unsigned long *) ptep);
page[1].index = 0;
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index ce36ea80e4f..ad446b0c55b 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -69,6 +69,7 @@ static void __init setup_zero_pages(void)
order = 2;
break;
case 0x2827: /* zEC12 */
+ case 0x2828: /* zEC12 */
default:
order = 5;
break;
diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c
index 80adfbf7506..990397420e6 100644
--- a/arch/s390/mm/pageattr.c
+++ b/arch/s390/mm/pageattr.c
@@ -118,7 +118,7 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
pte = pte_offset_kernel(pmd, address);
if (!enable) {
__ptep_ipte(address, pte);
- pte_val(*pte) = _PAGE_TYPE_EMPTY;
+ pte_val(*pte) = _PAGE_INVALID;
continue;
}
pte_val(*pte) = __pa(address);
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 967d0bf1c05..bf7c0dc64a7 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -161,7 +161,7 @@ static int gmap_unlink_segment(struct gmap *gmap, unsigned long *table)
struct gmap_rmap *rmap;
struct page *page;
- if (*table & _SEGMENT_ENTRY_INV)
+ if (*table & _SEGMENT_ENTRY_INVALID)
return 0;
page = pfn_to_page(*table >> PAGE_SHIFT);
mp = (struct gmap_pgtable *) page->index;
@@ -172,7 +172,7 @@ static int gmap_unlink_segment(struct gmap *gmap, unsigned long *table)
kfree(rmap);
break;
}
- *table = _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO | mp->vmaddr;
+ *table = mp->vmaddr | _SEGMENT_ENTRY_INVALID | _SEGMENT_ENTRY_PROTECT;
return 1;
}
@@ -258,7 +258,7 @@ static int gmap_alloc_table(struct gmap *gmap,
return -ENOMEM;
new = (unsigned long *) page_to_phys(page);
crst_table_init(new, init);
- if (*table & _REGION_ENTRY_INV) {
+ if (*table & _REGION_ENTRY_INVALID) {
list_add(&page->lru, &gmap->crst_list);
*table = (unsigned long) new | _REGION_ENTRY_LENGTH |
(*table & _REGION_ENTRY_TYPE_MASK);
@@ -292,22 +292,22 @@ int gmap_unmap_segment(struct gmap *gmap, unsigned long to, unsigned long len)
for (off = 0; off < len; off += PMD_SIZE) {
/* Walk the guest addr space page table */
table = gmap->table + (((to + off) >> 53) & 0x7ff);
- if (*table & _REGION_ENTRY_INV)
+ if (*table & _REGION_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + (((to + off) >> 42) & 0x7ff);
- if (*table & _REGION_ENTRY_INV)
+ if (*table & _REGION_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + (((to + off) >> 31) & 0x7ff);
- if (*table & _REGION_ENTRY_INV)
+ if (*table & _REGION_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + (((to + off) >> 20) & 0x7ff);
/* Clear segment table entry in guest address space. */
flush |= gmap_unlink_segment(gmap, table);
- *table = _SEGMENT_ENTRY_INV;
+ *table = _SEGMENT_ENTRY_INVALID;
}
out:
spin_unlock(&gmap->mm->page_table_lock);
@@ -345,17 +345,17 @@ int gmap_map_segment(struct gmap *gmap, unsigned long from,
for (off = 0; off < len; off += PMD_SIZE) {
/* Walk the gmap address space page table */
table = gmap->table + (((to + off) >> 53) & 0x7ff);
- if ((*table & _REGION_ENTRY_INV) &&
+ if ((*table & _REGION_ENTRY_INVALID) &&
gmap_alloc_table(gmap, table, _REGION2_ENTRY_EMPTY))
goto out_unmap;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + (((to + off) >> 42) & 0x7ff);
- if ((*table & _REGION_ENTRY_INV) &&
+ if ((*table & _REGION_ENTRY_INVALID) &&
gmap_alloc_table(gmap, table, _REGION3_ENTRY_EMPTY))
goto out_unmap;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + (((to + off) >> 31) & 0x7ff);
- if ((*table & _REGION_ENTRY_INV) &&
+ if ((*table & _REGION_ENTRY_INVALID) &&
gmap_alloc_table(gmap, table, _SEGMENT_ENTRY_EMPTY))
goto out_unmap;
table = (unsigned long *) (*table & _REGION_ENTRY_ORIGIN);
@@ -363,7 +363,8 @@ int gmap_map_segment(struct gmap *gmap, unsigned long from,
/* Store 'from' address in an invalid segment table entry. */
flush |= gmap_unlink_segment(gmap, table);
- *table = _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO | (from + off);
+ *table = (from + off) | (_SEGMENT_ENTRY_INVALID |
+ _SEGMENT_ENTRY_PROTECT);
}
spin_unlock(&gmap->mm->page_table_lock);
up_read(&gmap->mm->mmap_sem);
@@ -384,15 +385,15 @@ static unsigned long *gmap_table_walk(unsigned long address, struct gmap *gmap)
unsigned long *table;
table = gmap->table + ((address >> 53) & 0x7ff);
- if (unlikely(*table & _REGION_ENTRY_INV))
+ if (unlikely(*table & _REGION_ENTRY_INVALID))
return ERR_PTR(-EFAULT);
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + ((address >> 42) & 0x7ff);
- if (unlikely(*table & _REGION_ENTRY_INV))
+ if (unlikely(*table & _REGION_ENTRY_INVALID))
return ERR_PTR(-EFAULT);
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + ((address >> 31) & 0x7ff);
- if (unlikely(*table & _REGION_ENTRY_INV))
+ if (unlikely(*table & _REGION_ENTRY_INVALID))
return ERR_PTR(-EFAULT);
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + ((address >> 20) & 0x7ff);
@@ -422,11 +423,11 @@ unsigned long __gmap_translate(unsigned long address, struct gmap *gmap)
return PTR_ERR(segment_ptr);
/* Convert the gmap address to an mm address. */
segment = *segment_ptr;
- if (!(segment & _SEGMENT_ENTRY_INV)) {
+ if (!(segment & _SEGMENT_ENTRY_INVALID)) {
page = pfn_to_page(segment >> PAGE_SHIFT);
mp = (struct gmap_pgtable *) page->index;
return mp->vmaddr | (address & ~PMD_MASK);
- } else if (segment & _SEGMENT_ENTRY_RO) {
+ } else if (segment & _SEGMENT_ENTRY_PROTECT) {
vmaddr = segment & _SEGMENT_ENTRY_ORIGIN;
return vmaddr | (address & ~PMD_MASK);
}
@@ -517,8 +518,8 @@ static void gmap_disconnect_pgtable(struct mm_struct *mm, unsigned long *table)
page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
mp = (struct gmap_pgtable *) page->index;
list_for_each_entry_safe(rmap, next, &mp->mapper, list) {
- *rmap->entry =
- _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO | mp->vmaddr;
+ *rmap->entry = mp->vmaddr | (_SEGMENT_ENTRY_INVALID |
+ _SEGMENT_ENTRY_PROTECT);
list_del(&rmap->list);
kfree(rmap);
flush = 1;
@@ -545,13 +546,13 @@ unsigned long __gmap_fault(unsigned long address, struct gmap *gmap)
/* Convert the gmap address to an mm address. */
while (1) {
segment = *segment_ptr;
- if (!(segment & _SEGMENT_ENTRY_INV)) {
+ if (!(segment & _SEGMENT_ENTRY_INVALID)) {
/* Page table is present */
page = pfn_to_page(segment >> PAGE_SHIFT);
mp = (struct gmap_pgtable *) page->index;
return mp->vmaddr | (address & ~PMD_MASK);
}
- if (!(segment & _SEGMENT_ENTRY_RO))
+ if (!(segment & _SEGMENT_ENTRY_PROTECT))
/* Nothing mapped in the gmap address space. */
break;
rc = gmap_connect_pgtable(address, segment, segment_ptr, gmap);
@@ -586,25 +587,25 @@ void gmap_discard(unsigned long from, unsigned long to, struct gmap *gmap)
while (address < to) {
/* Walk the gmap address space page table */
table = gmap->table + ((address >> 53) & 0x7ff);
- if (unlikely(*table & _REGION_ENTRY_INV)) {
+ if (unlikely(*table & _REGION_ENTRY_INVALID)) {
address = (address + PMD_SIZE) & PMD_MASK;
continue;
}
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + ((address >> 42) & 0x7ff);
- if (unlikely(*table & _REGION_ENTRY_INV)) {
+ if (unlikely(*table & _REGION_ENTRY_INVALID)) {
address = (address + PMD_SIZE) & PMD_MASK;
continue;
}
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + ((address >> 31) & 0x7ff);
- if (unlikely(*table & _REGION_ENTRY_INV)) {
+ if (unlikely(*table & _REGION_ENTRY_INVALID)) {
address = (address + PMD_SIZE) & PMD_MASK;
continue;
}
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
table = table + ((address >> 20) & 0x7ff);
- if (unlikely(*table & _SEGMENT_ENTRY_INV)) {
+ if (unlikely(*table & _SEGMENT_ENTRY_INVALID)) {
address = (address + PMD_SIZE) & PMD_MASK;
continue;
}
@@ -687,7 +688,7 @@ int gmap_ipte_notify(struct gmap *gmap, unsigned long start, unsigned long len)
continue;
/* Set notification bit in the pgste of the pte */
entry = *ptep;
- if ((pte_val(entry) & (_PAGE_INVALID | _PAGE_RO)) == 0) {
+ if ((pte_val(entry) & (_PAGE_INVALID | _PAGE_PROTECT)) == 0) {
pgste = pgste_get_lock(ptep);
pgste_val(pgste) |= PGSTE_IN_BIT;
pgste_set_unlock(ptep, pgste);
@@ -757,8 +758,9 @@ static inline unsigned long *page_table_alloc_pgste(struct mm_struct *mm,
page->index = (unsigned long) mp;
atomic_set(&page->_mapcount, 0);
table = (unsigned long *) page_to_phys(page);
- clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE/2);
- clear_table(table + PTRS_PER_PTE, 0, PAGE_SIZE/2);
+ clear_table(table, _PAGE_INVALID, PAGE_SIZE/2);
+ clear_table(table + PTRS_PER_PTE, PGSTE_HR_BIT | PGSTE_HC_BIT,
+ PAGE_SIZE/2);
return table;
}
@@ -796,26 +798,21 @@ int set_guest_storage_key(struct mm_struct *mm, unsigned long addr,
pgste_val(new) |= (key & (_PAGE_CHANGED | _PAGE_REFERENCED)) << 48;
pgste_val(new) |= (key & (_PAGE_ACC_BITS | _PAGE_FP_BIT)) << 56;
if (!(pte_val(*ptep) & _PAGE_INVALID)) {
- unsigned long address, bits;
- unsigned char skey;
+ unsigned long address, bits, skey;
address = pte_val(*ptep) & PAGE_MASK;
- skey = page_get_storage_key(address);
+ skey = (unsigned long) page_get_storage_key(address);
bits = skey & (_PAGE_CHANGED | _PAGE_REFERENCED);
+ skey = key & (_PAGE_ACC_BITS | _PAGE_FP_BIT);
/* Set storage key ACC and FP */
- page_set_storage_key(address,
- (key & (_PAGE_ACC_BITS | _PAGE_FP_BIT)),
- !nq);
-
+ page_set_storage_key(address, skey, !nq);
/* Merge host changed & referenced into pgste */
pgste_val(new) |= bits << 52;
- /* Transfer skey changed & referenced bit to kvm user bits */
- pgste_val(new) |= bits << 45; /* PGSTE_UR_BIT & PGSTE_UC_BIT */
}
/* changing the guest storage key is considered a change of the page */
if ((pgste_val(new) ^ pgste_val(old)) &
(PGSTE_ACC_BITS | PGSTE_FP_BIT | PGSTE_GR_BIT | PGSTE_GC_BIT))
- pgste_val(new) |= PGSTE_UC_BIT;
+ pgste_val(new) |= PGSTE_HC_BIT;
pgste_set_unlock(ptep, new);
pte_unmap_unlock(*ptep, ptl);
@@ -888,7 +885,7 @@ unsigned long *page_table_alloc(struct mm_struct *mm, unsigned long vmaddr)
pgtable_page_ctor(page);
atomic_set(&page->_mapcount, 1);
table = (unsigned long *) page_to_phys(page);
- clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE);
+ clear_table(table, _PAGE_INVALID, PAGE_SIZE);
spin_lock_bh(&mm->context.list_lock);
list_add(&page->lru, &mm->context.pgtable_list);
} else {
@@ -1017,7 +1014,6 @@ void tlb_table_flush(struct mmu_gather *tlb)
struct mmu_table_batch **batch = &tlb->batch;
if (*batch) {
- __tlb_flush_mm(tlb->mm);
call_rcu_sched(&(*batch)->rcu, tlb_remove_table_rcu);
*batch = NULL;
}
@@ -1027,11 +1023,12 @@ void tlb_remove_table(struct mmu_gather *tlb, void *table)
{
struct mmu_table_batch **batch = &tlb->batch;
+ tlb->mm->context.flush_mm = 1;
if (*batch == NULL) {
*batch = (struct mmu_table_batch *)
__get_free_page(GFP_NOWAIT | __GFP_NOWARN);
if (*batch == NULL) {
- __tlb_flush_mm(tlb->mm);
+ __tlb_flush_mm_lazy(tlb->mm);
tlb_remove_table_one(table);
return;
}
@@ -1039,7 +1036,7 @@ void tlb_remove_table(struct mmu_gather *tlb, void *table)
}
(*batch)->tables[(*batch)->nr++] = table;
if ((*batch)->nr == MAX_TABLE_BATCH)
- tlb_table_flush(tlb);
+ tlb_flush_mmu(tlb);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -1171,9 +1168,9 @@ int s390_enable_sie(void)
thp_split_mm(mm);
/* Reallocate the page tables with pgstes */
mm->context.has_pgste = 1;
- tlb_gather_mmu(&tlb, mm, 0);
+ tlb_gather_mmu(&tlb, mm, 0, TASK_SIZE);
page_table_realloc(&tlb, mm, 0, TASK_SIZE);
- tlb_finish_mmu(&tlb, 0, -1);
+ tlb_finish_mmu(&tlb, 0, TASK_SIZE);
up_write(&mm->mmap_sem);
return mm->context.has_pgste ? 0 : -ENOMEM;
}
@@ -1251,9 +1248,9 @@ pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)
list_del(lh);
}
ptep = (pte_t *) pgtable;
- pte_val(*ptep) = _PAGE_TYPE_EMPTY;
+ pte_val(*ptep) = _PAGE_INVALID;
ptep++;
- pte_val(*ptep) = _PAGE_TYPE_EMPTY;
+ pte_val(*ptep) = _PAGE_INVALID;
return pgtable;
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 8b268fcc461..bcfb70b60be 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -69,7 +69,7 @@ static pte_t __ref *vmem_pte_alloc(unsigned long address)
pte = alloc_bootmem(PTRS_PER_PTE * sizeof(pte_t));
if (!pte)
return NULL;
- clear_table((unsigned long *) pte, _PAGE_TYPE_EMPTY,
+ clear_table((unsigned long *) pte, _PAGE_INVALID,
PTRS_PER_PTE * sizeof(pte_t));
return pte;
}
@@ -101,7 +101,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
!(address & ~PUD_MASK) && (address + PUD_SIZE <= end)) {
pud_val(*pu_dir) = __pa(address) |
_REGION_ENTRY_TYPE_R3 | _REGION3_ENTRY_LARGE |
- (ro ? _REGION_ENTRY_RO : 0);
+ (ro ? _REGION_ENTRY_PROTECT : 0);
address += PUD_SIZE;
continue;
}
@@ -118,7 +118,8 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
!(address & ~PMD_MASK) && (address + PMD_SIZE <= end)) {
pmd_val(*pm_dir) = __pa(address) |
_SEGMENT_ENTRY | _SEGMENT_ENTRY_LARGE |
- (ro ? _SEGMENT_ENTRY_RO : 0);
+ _SEGMENT_ENTRY_YOUNG |
+ (ro ? _SEGMENT_ENTRY_PROTECT : 0);
address += PMD_SIZE;
continue;
}
@@ -131,7 +132,8 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
}
pt_dir = pte_offset_kernel(pm_dir, address);
- pte_val(*pt_dir) = __pa(address) | (ro ? _PAGE_RO : 0);
+ pte_val(*pt_dir) = __pa(address) |
+ pgprot_val(ro ? PAGE_KERNEL_RO : PAGE_KERNEL);
address += PAGE_SIZE;
}
ret = 0;
@@ -154,7 +156,7 @@ static void vmem_remove_range(unsigned long start, unsigned long size)
pte_t *pt_dir;
pte_t pte;
- pte_val(pte) = _PAGE_TYPE_EMPTY;
+ pte_val(pte) = _PAGE_INVALID;
while (address < end) {
pg_dir = pgd_offset_k(address);
if (pgd_none(*pg_dir)) {
@@ -255,7 +257,8 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node)
new_page =__pa(vmem_alloc_pages(0));
if (!new_page)
goto out;
- pte_val(*pt_dir) = __pa(new_page);
+ pte_val(*pt_dir) =
+ __pa(new_page) | pgprot_val(PAGE_KERNEL);
}
address += PAGE_SIZE;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-28 01:40:32 +0000