s390/mm: add no-dat TLB flush optimization
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 57057fb..c927138 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -952,15 +952,27 @@ static inline pte_t pte_mkhuge(pte_t pte)
#define IPTE_GLOBAL 0
#define IPTE_LOCAL 1
-static inline void __ptep_ipte(unsigned long address, pte_t *ptep, int local)
+#define IPTE_NODAT 0x400
+
+static inline void __ptep_ipte(unsigned long address, pte_t *ptep,
+ unsigned long opt, int local)
{
unsigned long pto = (unsigned long) ptep;
- /* Invalidation + TLB flush for the pte */
+ if (__builtin_constant_p(opt) && opt == 0) {
+ /* Invalidation + TLB flush for the pte */
+ asm volatile(
+ " .insn rrf,0xb2210000,%[r1],%[r2],0,%[m4]"
+ : "+m" (*ptep) : [r1] "a" (pto), [r2] "a" (address),
+ [m4] "i" (local));
+ return;
+ }
+
+ /* Invalidate ptes with options + TLB flush of the ptes */
asm volatile(
- " .insn rrf,0xb2210000,%[r1],%[r2],0,%[m4]"
- : "+m" (*ptep) : [r1] "a" (pto), [r2] "a" (address),
- [m4] "i" (local));
+ " .insn rrf,0xb2210000,%[r1],%[r2],%[r3],%[m4]"
+ : [r2] "+a" (address), [r3] "+a" (opt)
+ : [r1] "a" (pto), [m4] "i" (local) : "memory");
}
static inline void __ptep_ipte_range(unsigned long address, int nr,
@@ -1341,31 +1353,36 @@ static inline void __pmdp_csp(pmd_t *pmdp)
#define IDTE_GLOBAL 0
#define IDTE_LOCAL 1
-static inline void __pmdp_idte(unsigned long address, pmd_t *pmdp, int local)
+#define IDTE_PTOA 0x0800
+#define IDTE_NODAT 0x1000
+
+static inline void __pmdp_idte(unsigned long addr, pmd_t *pmdp,
+ unsigned long opt, int local)
{
unsigned long sto;
- sto = (unsigned long) pmdp - pmd_index(address) * sizeof(pmd_t);
+ sto = (unsigned long) pmdp - pmd_index(addr) * sizeof(pmd_t);
asm volatile(
" .insn rrf,0xb98e0000,%[r1],%[r2],0,%[m4]"
: "+m" (*pmdp)
- : [r1] "a" (sto), [r2] "a" ((address & HPAGE_MASK)),
+ : [r1] "a" (sto), [r2] "a" ((addr & HPAGE_MASK) | opt),
[m4] "i" (local)
: "cc" );
}
-static inline void __pudp_idte(unsigned long address, pud_t *pudp, int local)
+static inline void __pudp_idte(unsigned long addr, pud_t *pudp,
+ unsigned long opt, int local)
{
unsigned long r3o;
- r3o = (unsigned long) pudp - pud_index(address) * sizeof(pud_t);
+ r3o = (unsigned long) pudp - pud_index(addr) * sizeof(pud_t);
r3o |= _ASCE_TYPE_REGION3;
asm volatile(
" .insn rrf,0xb98e0000,%[r1],%[r2],0,%[m4]"
: "+m" (*pudp)
- : [r1] "a" (r3o), [r2] "a" ((address & PUD_MASK)),
+ : [r1] "a" (r3o), [r2] "a" ((addr & PUD_MASK) | opt),
[m4] "i" (local)
- : "cc");
+ : "cc" );
}
pmd_t pmdp_xchg_direct(struct mm_struct *, unsigned long, pmd_t *, pmd_t);