powerpc: Decode the pte-lp-encoding bits correctly.

We look at both the segment base page size and actual page size and store
the pte-lp-encodings in an array per base page size.

We also update all relevant functions to take actual page size argument
so that we can use the correct PTE LP encoding in HPTE. This should also
get the basic Multiple Page Size per Segment (MPSS) support. This is needed
to enable THP on ppc64.

[Fixed PR KVM build --BenH]

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

3 files changed, 14 insertions, 14 deletions

diff --git a/arch/powerpc/platforms/cell/beat_htab.c b/arch/powerpc/platforms/cell/beat_htab.c
index 472f9a7609c..246e1d8b3af 100644
--- a/arch/powerpc/platforms/cell/beat_htab.c
+++ b/arch/powerpc/platforms/cell/beat_htab.c
@@ -90,7 +90,7 @@ static inline unsigned int beat_read_mask(unsigned hpte_group)
 static long beat_lpar_hpte_insert(unsigned long hpte_group,
 				  unsigned long vpn, unsigned long pa,
 				  unsigned long rflags, unsigned long vflags,
-				  int psize, int ssize)
+				  int psize, int apsize, int ssize)
 {
 	unsigned long lpar_rc;
 	u64 hpte_v, hpte_r, slot;
@@ -103,9 +103,9 @@ static long beat_lpar_hpte_insert(unsigned long hpte_group,
 			"rflags=%lx, vflags=%lx, psize=%d)\n",
 		hpte_group, va, pa, rflags, vflags, psize);
 
-	hpte_v = hpte_encode_v(vpn, psize, MMU_SEGSIZE_256M) |
+	hpte_v = hpte_encode_v(vpn, psize, apsize, MMU_SEGSIZE_256M) |
 		vflags | HPTE_V_VALID;
-	hpte_r = hpte_encode_r(pa, psize) | rflags;
+	hpte_r = hpte_encode_r(pa, psize, apsize) | rflags;
 
 	if (!(vflags & HPTE_V_BOLTED))
 		DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r);
@@ -314,7 +314,7 @@ void __init hpte_init_beat(void)
 static long beat_lpar_hpte_insert_v3(unsigned long hpte_group,
 				  unsigned long vpn, unsigned long pa,
 				  unsigned long rflags, unsigned long vflags,
-				  int psize, int ssize)
+				  int psize, int apsize, int ssize)
 {
 	unsigned long lpar_rc;
 	u64 hpte_v, hpte_r, slot;
@@ -327,9 +327,9 @@ static long beat_lpar_hpte_insert_v3(unsigned long hpte_group,
 			"rflags=%lx, vflags=%lx, psize=%d)\n",
 		hpte_group, vpn, pa, rflags, vflags, psize);
 
-	hpte_v = hpte_encode_v(vpn, psize, MMU_SEGSIZE_256M) |
+	hpte_v = hpte_encode_v(vpn, psize, apsize, MMU_SEGSIZE_256M) |
 		vflags | HPTE_V_VALID;
-	hpte_r = hpte_encode_r(pa, psize) | rflags;
+	hpte_r = hpte_encode_r(pa, psize, apsize) | rflags;
 
 	if (!(vflags & HPTE_V_BOLTED))
 		DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r);
@@ -373,7 +373,7 @@ static long beat_lpar_hpte_updatepp_v3(unsigned long slot,
 	unsigned long pss;
 
 	want_v = hpte_encode_avpn(vpn, psize, MMU_SEGSIZE_256M);
-	pss = (psize == MMU_PAGE_4K) ? -1UL : mmu_psize_defs[psize].penc;
+	pss = (psize == MMU_PAGE_4K) ? -1UL : mmu_psize_defs[psize].penc[psize];
 
 	DBG_LOW("    update: "
 		"avpnv=%016lx, slot=%016lx, psize: %d, newpp %016lx ... ",
@@ -403,7 +403,7 @@ static void beat_lpar_hpte_invalidate_v3(unsigned long slot, unsigned long vpn,
 	DBG_LOW("    inval : slot=%lx, vpn=%016lx, psize: %d, local: %d\n",
 		slot, vpn, psize, local);
 	want_v = hpte_encode_avpn(vpn, psize, MMU_SEGSIZE_256M);
-	pss = (psize == MMU_PAGE_4K) ? -1UL : mmu_psize_defs[psize].penc;
+	pss = (psize == MMU_PAGE_4K) ? -1UL : mmu_psize_defs[psize].penc[psize];
 
 	lpar_rc = beat_invalidate_htab_entry3(0, slot, want_v, pss);
 
diff --git a/arch/powerpc/platforms/ps3/htab.c b/arch/powerpc/platforms/ps3/htab.c
index cd8f2fbb6d1..177a2f70700 100644
--- a/arch/powerpc/platforms/ps3/htab.c
+++ b/arch/powerpc/platforms/ps3/htab.c
@@ -46,7 +46,7 @@ static DEFINE_SPINLOCK(ps3_htab_lock);
 
 static long ps3_hpte_insert(unsigned long hpte_group, unsigned long vpn,
 	unsigned long pa, unsigned long rflags, unsigned long vflags,
-	int psize, int ssize)
+	int psize, int apsize, int ssize)
 {
 	int result;
 	u64 hpte_v, hpte_r;
@@ -62,8 +62,8 @@ static long ps3_hpte_insert(unsigned long hpte_group, unsigned long vpn,
 	 */
 	vflags &= ~HPTE_V_SECONDARY;
 
-	hpte_v = hpte_encode_v(vpn, psize, ssize) | vflags | HPTE_V_VALID;
-	hpte_r = hpte_encode_r(ps3_mm_phys_to_lpar(pa), psize) | rflags;
+	hpte_v = hpte_encode_v(vpn, psize, apsize, ssize) | vflags | HPTE_V_VALID;
+	hpte_r = hpte_encode_r(ps3_mm_phys_to_lpar(pa), psize, apsize) | rflags;
 
 	spin_lock_irqsave(&ps3_htab_lock, flags);
 
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 9b02ab14a5c..6d62072a7d5 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -109,7 +109,7 @@ void vpa_init(int cpu)
 static long pSeries_lpar_hpte_insert(unsigned long hpte_group,
 				     unsigned long vpn, unsigned long pa,
 				     unsigned long rflags, unsigned long vflags,
-				     int psize, int ssize)
+				     int psize, int apsize, int ssize)
 {
 	unsigned long lpar_rc;
 	unsigned long flags;
@@ -121,8 +121,8 @@ static long pSeries_lpar_hpte_insert(unsigned long hpte_group,
 			 "pa=%016lx, rflags=%lx, vflags=%lx, psize=%d)\n",
 			 hpte_group, vpn,  pa, rflags, vflags, psize);
 
-	hpte_v = hpte_encode_v(vpn, psize, ssize) | vflags | HPTE_V_VALID;
-	hpte_r = hpte_encode_r(pa, psize) | rflags;
+	hpte_v = hpte_encode_v(vpn, psize, apsize, ssize) | vflags | HPTE_V_VALID;
+	hpte_r = hpte_encode_r(pa, psize, apsize) | rflags;
 
 	if (!(vflags & HPTE_V_BOLTED))
 		pr_devel(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r);