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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-07-26 17:00:22 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-07-25 07:55:33 +0300 |
| commit | 28c807e5132ecc9f1607461eabfa1fc67b21e163 (patch) | |
| tree | 43efe509f54607e0dcee7d00a7c143607f3848bc /arch/s390/mm/pgtable.c | |
| parent | 118bd31bea2cdb7f1dbf22dd9a58e818b5313156 (diff) | |
| download | linux-28c807e5132ecc9f1607461eabfa1fc67b21e163.tar.xz | |
s390/mm: add guest ASCE TLB flush optimization
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/pgtable.c')
| -rw-r--r-- | arch/s390/mm/pgtable.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 9696bf89f03a..3f1abc7b5fd2 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -35,9 +35,13 @@ static inline void ptep_ipte_local(struct mm_struct *mm, unsigned long addr, asce = READ_ONCE(mm->context.gmap_asce); if (asce == 0UL) opt |= IPTE_NODAT; - __ptep_ipte(addr, ptep, opt, IPTE_LOCAL); + if (asce != -1UL) { + asce = asce ? : mm->context.asce; + opt |= IPTE_GUEST_ASCE; + } + __ptep_ipte(addr, ptep, opt, asce, IPTE_LOCAL); } else { - __ptep_ipte(addr, ptep, 0, IPTE_LOCAL); + __ptep_ipte(addr, ptep, 0, 0, IPTE_LOCAL); } } @@ -51,9 +55,13 @@ static inline void ptep_ipte_global(struct mm_struct *mm, unsigned long addr, asce = READ_ONCE(mm->context.gmap_asce); if (asce == 0UL) opt |= IPTE_NODAT; - __ptep_ipte(addr, ptep, opt, IPTE_GLOBAL); + if (asce != -1UL) { + asce = asce ? : mm->context.asce; + opt |= IPTE_GUEST_ASCE; + } + __ptep_ipte(addr, ptep, opt, asce, IPTE_GLOBAL); } else { - __ptep_ipte(addr, ptep, 0, IPTE_GLOBAL); + __ptep_ipte(addr, ptep, 0, 0, IPTE_GLOBAL); } } @@ -326,18 +334,20 @@ static inline void pmdp_idte_local(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp) { if (MACHINE_HAS_TLB_GUEST) - __pmdp_idte(addr, pmdp, IDTE_NODAT, IDTE_LOCAL); + __pmdp_idte(addr, pmdp, IDTE_NODAT | IDTE_GUEST_ASCE, + mm->context.asce, IDTE_LOCAL); else - __pmdp_idte(addr, pmdp, 0, IDTE_LOCAL); + __pmdp_idte(addr, pmdp, 0, 0, IDTE_LOCAL); } static inline void pmdp_idte_global(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp) { if (MACHINE_HAS_TLB_GUEST) - __pmdp_idte(addr, pmdp, IDTE_NODAT, IDTE_GLOBAL); + __pmdp_idte(addr, pmdp, IDTE_NODAT | IDTE_GUEST_ASCE, + mm->context.asce, IDTE_GLOBAL); else if (MACHINE_HAS_IDTE) - __pmdp_idte(addr, pmdp, 0, IDTE_GLOBAL); + __pmdp_idte(addr, pmdp, 0, 0, IDTE_GLOBAL); else __pmdp_csp(pmdp); } @@ -410,18 +420,20 @@ static inline void pudp_idte_local(struct mm_struct *mm, unsigned long addr, pud_t *pudp) { if (MACHINE_HAS_TLB_GUEST) - __pudp_idte(addr, pudp, IDTE_NODAT, IDTE_LOCAL); + __pudp_idte(addr, pudp, IDTE_NODAT | IDTE_GUEST_ASCE, + mm->context.asce, IDTE_LOCAL); else - __pudp_idte(addr, pudp, 0, IDTE_LOCAL); + __pudp_idte(addr, pudp, 0, 0, IDTE_LOCAL); } static inline void pudp_idte_global(struct mm_struct *mm, unsigned long addr, pud_t *pudp) { if (MACHINE_HAS_TLB_GUEST) - __pudp_idte(addr, pudp, IDTE_NODAT, IDTE_GLOBAL); + __pudp_idte(addr, pudp, IDTE_NODAT | IDTE_GUEST_ASCE, + mm->context.asce, IDTE_GLOBAL); else if (MACHINE_HAS_IDTE) - __pudp_idte(addr, pudp, 0, IDTE_GLOBAL); + __pudp_idte(addr, pudp, 0, 0, IDTE_GLOBAL); else /* * Invalid bit position is the same for pmd and pud, so we can |