diff options
author | David S. Miller <davem@davemloft.net> | 2011-11-21 13:50:33 -0500 |
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committer | David S. Miller <davem@davemloft.net> | 2011-11-21 13:50:33 -0500 |
commit | efd0bf97deeddd9ba53daabfc470a1399c6b0b2d (patch) | |
tree | eec56da5fbc796bac7c67f1990a18f5e0a304059 /arch/s390/include/asm/pgtable.h | |
parent | f8a15af093b19b86d56933c8757cee298d0f32a8 (diff) | |
parent | 6fe4c6d466e95d31164f14b1ac4aefb51f0f4f82 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The forcedeth changes had a conflict with the conversion over
to atomic u64 statistics in net-next.
The libertas cfg.c code had a conflict with the bss reference
counting fix by John Linville in net-next.
Conflicts:
drivers/net/ethernet/nvidia/forcedeth.c
drivers/net/wireless/libertas/cfg.c
Diffstat (limited to 'arch/s390/include/asm/pgtable.h')
-rw-r--r-- | arch/s390/include/asm/pgtable.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 34ede0ea85a9..524d23b8610c 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h | |||
@@ -593,6 +593,8 @@ static inline pgste_t pgste_update_all(pte_t *ptep, pgste_t pgste) | |||
593 | unsigned long address, bits; | 593 | unsigned long address, bits; |
594 | unsigned char skey; | 594 | unsigned char skey; |
595 | 595 | ||
596 | if (!pte_present(*ptep)) | ||
597 | return pgste; | ||
596 | address = pte_val(*ptep) & PAGE_MASK; | 598 | address = pte_val(*ptep) & PAGE_MASK; |
597 | skey = page_get_storage_key(address); | 599 | skey = page_get_storage_key(address); |
598 | bits = skey & (_PAGE_CHANGED | _PAGE_REFERENCED); | 600 | bits = skey & (_PAGE_CHANGED | _PAGE_REFERENCED); |
@@ -625,6 +627,8 @@ static inline pgste_t pgste_update_young(pte_t *ptep, pgste_t pgste) | |||
625 | #ifdef CONFIG_PGSTE | 627 | #ifdef CONFIG_PGSTE |
626 | int young; | 628 | int young; |
627 | 629 | ||
630 | if (!pte_present(*ptep)) | ||
631 | return pgste; | ||
628 | young = page_reset_referenced(pte_val(*ptep) & PAGE_MASK); | 632 | young = page_reset_referenced(pte_val(*ptep) & PAGE_MASK); |
629 | /* Transfer page referenced bit to pte software bit (host view) */ | 633 | /* Transfer page referenced bit to pte software bit (host view) */ |
630 | if (young || (pgste_val(pgste) & RCP_HR_BIT)) | 634 | if (young || (pgste_val(pgste) & RCP_HR_BIT)) |
@@ -638,13 +642,15 @@ static inline pgste_t pgste_update_young(pte_t *ptep, pgste_t pgste) | |||
638 | 642 | ||
639 | } | 643 | } |
640 | 644 | ||
641 | static inline void pgste_set_pte(pte_t *ptep, pgste_t pgste) | 645 | static inline void pgste_set_pte(pte_t *ptep, pgste_t pgste, pte_t entry) |
642 | { | 646 | { |
643 | #ifdef CONFIG_PGSTE | 647 | #ifdef CONFIG_PGSTE |
644 | unsigned long address; | 648 | unsigned long address; |
645 | unsigned long okey, nkey; | 649 | unsigned long okey, nkey; |
646 | 650 | ||
647 | address = pte_val(*ptep) & PAGE_MASK; | 651 | if (!pte_present(entry)) |
652 | return; | ||
653 | address = pte_val(entry) & PAGE_MASK; | ||
648 | okey = nkey = page_get_storage_key(address); | 654 | okey = nkey = page_get_storage_key(address); |
649 | nkey &= ~(_PAGE_ACC_BITS | _PAGE_FP_BIT); | 655 | nkey &= ~(_PAGE_ACC_BITS | _PAGE_FP_BIT); |
650 | /* Set page access key and fetch protection bit from pgste */ | 656 | /* Set page access key and fetch protection bit from pgste */ |
@@ -712,7 +718,7 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, | |||
712 | 718 | ||
713 | if (mm_has_pgste(mm)) { | 719 | if (mm_has_pgste(mm)) { |
714 | pgste = pgste_get_lock(ptep); | 720 | pgste = pgste_get_lock(ptep); |
715 | pgste_set_pte(ptep, pgste); | 721 | pgste_set_pte(ptep, pgste, entry); |
716 | *ptep = entry; | 722 | *ptep = entry; |
717 | pgste_set_unlock(ptep, pgste); | 723 | pgste_set_unlock(ptep, pgste); |
718 | } else | 724 | } else |