From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
This make sure we handle Multiple page size segment correctly.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
---
arch/powerpc/mm/hash_native_64.c | 52 +++++++++++++++++++++++++++++---------
1 file changed, 40 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c
index 3d30b23..3bc57e2 100644
--- a/arch/powerpc/mm/hash_native_64.c
+++ b/arch/powerpc/mm/hash_native_64.c
@@ -39,7 +39,7 @@
DEFINE_RAW_SPINLOCK(native_tlbie_lock);
-static inline void __tlbie(unsigned long vpn, int psize, int apsize, int ssize)
+static inline void __tlbie(unsigned long vpn, int bpsize, int apsize, int ssize)
{
unsigned long va;
unsigned int penc;
@@ -59,19 +59,33 @@ static inline void __tlbie(unsigned long vpn, int psize, int apsize, int ssize)
*/
va &= ~(0xffffULL << 48);
- switch (psize) {
+ switch (bpsize) {
case MMU_PAGE_4K:
+ /* clear out bits after (52) [0....52.....63] */
+ va &= ~((1ul << (64 - 52)) - 1);
va |= ssize << 8;
+ va |= mmu_psize_defs[apsize].sllp << 6;
asm volatile(ASM_FTR_IFCLR("tlbie %0,0", PPC_TLBIE(%1,%0), %2)
: : "r" (va), "r"(0), "i" (CPU_FTR_ARCH_206)
: "memory");
break;
default:
/* We need 14 to 14 + i bits of va */
- penc = mmu_psize_defs[psize].penc[apsize];
- va &= ~((1ul << mmu_psize_defs[psize].shift) - 1);
+ penc = mmu_psize_defs[bpsize].penc[apsize];
+ /* clear out bits after (44) [0....44.....63] */
+ va &= ~((1ul << (64 - 44)) - 1);
va |= penc << 12;
va |= ssize << 8;
+ /* Add AVAL part */
+ if (bpsize != apsize) {
+ /*
+ * MPSS, 64K base page size and 16MB parge page size
+ * We don't need all the bits, but this seems to work.
+ * vpn cover upto 65 bits of va. (0...65) and we need
+ * 56..62 bits of va.
+ */
+ va |= ((vpn >> 2) & 0xfe);
+ }
va |= 1; /* L */
asm volatile(ASM_FTR_IFCLR("tlbie %0,1", PPC_TLBIE(%1,%0), %2)
: : "r" (va), "r"(0), "i" (CPU_FTR_ARCH_206)
@@ -80,7 +94,7 @@ static inline void __tlbie(unsigned long vpn, int psize, int apsize, int ssize)
}
}
-static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize)
+static inline void __tlbiel(unsigned long vpn, int bpsize, int apsize, int ssize)
{
unsigned long va;
unsigned int penc;
@@ -94,18 +108,32 @@ static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize)
*/
va &= ~(0xffffULL << 48);
- switch (psize) {
+ switch (bpsize) {
case MMU_PAGE_4K:
+ /* clear out bits after(52) [0....52.....63] */
+ va &= ~((1ul << (64 - 52)) - 1);
va |= ssize << 8;
+ va |= mmu_psize_defs[apsize].sllp << 6;
asm volatile(".long 0x7c000224 | (%0 << 11) | (0 << 21)"
: : "r"(va) : "memory");
break;
default:
/* We need 14 to 14 + i bits of va */
- penc = mmu_psize_defs[psize].penc[apsize];
- va &= ~((1ul << mmu_psize_defs[psize].shift) - 1);
+ penc = mmu_psize_defs[bpsize].penc[apsize];
+ /* clear out bits after(44) [0....44.....63] */
+ va &= ~((1ul << (64 - 44)) - 1);
va |= penc << 12;
va |= ssize << 8;
+ /* Add AVAL part */
+ if (bpsize != apsize) {
+ /*
+ * MPSS, 64K base page size and 16MB parge page size
+ * We don't need all the bits, but this seems to work.
+ * vpn cover upto 65 bits of va. (0...65) and we need
+ * 56..62 bits of va.
+ */
+ va |= ((vpn >> 2) & 0xfe);
+ }
va |= 1; /* L */
asm volatile(".long 0x7c000224 | (%0 << 11) | (1 << 21)"
: : "r"(va) : "memory");
@@ -114,22 +142,22 @@ static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize)
}
-static inline void tlbie(unsigned long vpn, int psize, int apsize,
+static inline void tlbie(unsigned long vpn, int bpsize, int apsize,
int ssize, int local)
{
unsigned int use_local = local && mmu_has_feature(MMU_FTR_TLBIEL);
int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
if (use_local)
- use_local = mmu_psize_defs[psize].tlbiel;
+ use_local = mmu_psize_defs[bpsize].tlbiel;
if (lock_tlbie && !use_local)
raw_spin_lock(&native_tlbie_lock);
asm volatile("ptesync": : :"memory");
if (use_local) {
- __tlbiel(vpn, psize, apsize, ssize);
+ __tlbiel(vpn, bpsize, apsize, ssize);
asm volatile("ptesync": : :"memory");
} else {
- __tlbie(vpn, psize, apsize, ssize);
+ __tlbie(vpn, bpsize, apsize, ssize);
asm volatile("eieio; tlbsync; ptesync": : :"memory");
}
if (lock_tlbie && !use_local)
--
1.7.10
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>