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powerpc: Update tlbie/tlbiel as per ISA doc
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Encode the actual page correctly in tlbie/tlbiel. This make sure we handle
multiple page size segment correctly.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Aneesh Kumar K.V authored and Benjamin Herrenschmidt committed Apr 30, 2013
1 parent 3dc4fec commit 1f6aaac
Showing 1 changed file with 30 additions and 2 deletions.
32 changes: 30 additions & 2 deletions arch/powerpc/mm/hash_native_64.c
Original file line number Diff line number Diff line change
Expand Up @@ -61,17 +61,31 @@ static inline void __tlbie(unsigned long vpn, int psize, int apsize, int ssize)

switch (psize) {
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);
va &= ~((1ul << mmu_psize_defs[apsize].shift) - 1);
va |= penc << 12;
va |= ssize << 8;
/* Add AVAL part */
if (psize != apsize) {
/*
* MPSS, 64K base page size and 16MB parge page size
* We don't need all the bits, but rest of the bits
* must be ignored by the processor.
* vpn cover upto 65 bits of va. (0...65) and we need
* 58..64 bits of va.
*/
va |= (vpn & 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)
Expand All @@ -96,16 +110,30 @@ static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize)

switch (psize) {
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);
va &= ~((1ul << mmu_psize_defs[apsize].shift) - 1);
va |= penc << 12;
va |= ssize << 8;
/* Add AVAL part */
if (psize != apsize) {
/*
* MPSS, 64K base page size and 16MB parge page size
* We don't need all the bits, but rest of the bits
* must be ignored by the processor.
* vpn cover upto 65 bits of va. (0...65) and we need
* 58..64 bits of va.
*/
va |= (vpn & 0xfe);
}
va |= 1; /* L */
asm volatile(".long 0x7c000224 | (%0 << 11) | (1 << 21)"
: : "r"(va) : "memory");
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