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

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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>
This commit is contained in:
Aneesh Kumar K.V
2013-04-28 09:37:35 +00:00
committed by Benjamin Herrenschmidt
parent 74f227b228
commit b1022fbd29
10 changed files with 235 additions and 119 deletions
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3
arch/powerpc/include/asm/machdep.h
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@@ -50,7 +50,8 @@ struct machdep_calls {
unsigned long prpn,
unsigned long rflags,
unsigned long vflags,
int psize, int ssize);
int psize, int apsize,
int ssize);
long (*hpte_remove)(unsigned long hpte_group);
void (*hpte_removebolted)(unsigned long ea,
int psize, int ssize);