diff options
| author | Laurent Dufour <ldufour@linux.vnet.ibm.com> | 2018-08-20 16:29:35 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-09-17 21:17:25 +1000 |
| commit | 0effa488dc1ad082ceed44b5d38c29fd8b3f259e (patch) | |
| tree | 0d8125fc13d34f98d494e0e1da9c41e5c56b6200 /arch/powerpc/platforms/pseries/lpar.c | |
| parent | 5600fbe340331e2a25d1b277f9c190f5c9948038 (diff) | |
powerpc/pseries/mm: factorize PTE slot computation
This part of code will be called also when dealing with H_BLOCK_REMOVE.
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/pseries/lpar.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/lpar.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index d3992ced0782..ebc852e3607d 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -546,6 +546,24 @@ static int pSeries_lpar_hpte_removebolted(unsigned long ea, return 0; } + +static inline unsigned long compute_slot(real_pte_t pte, + unsigned long vpn, + unsigned long index, + unsigned long shift, + int ssize) +{ + unsigned long slot, hash, hidx; + + hash = hpt_hash(vpn, shift, ssize); + hidx = __rpte_to_hidx(pte, index); + if (hidx & _PTEIDX_SECONDARY) + hash = ~hash; + slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; + slot += hidx & _PTEIDX_GROUP_IX; + return slot; +} + /* * Take a spinlock around flushes to avoid bouncing the hypervisor tlbie * lock. @@ -558,7 +576,7 @@ static void pSeries_lpar_flush_hash_range(unsigned long number, int local) struct ppc64_tlb_batch *batch = this_cpu_ptr(&ppc64_tlb_batch); int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE); unsigned long param[PLPAR_HCALL9_BUFSIZE]; - unsigned long hash, index, shift, hidx, slot; + unsigned long index, shift, slot; real_pte_t pte; int psize, ssize; @@ -572,12 +590,7 @@ static void pSeries_lpar_flush_hash_range(unsigned long number, int local) vpn = batch->vpn[i]; pte = batch->pte[i]; pte_iterate_hashed_subpages(pte, psize, vpn, index, shift) { - hash = hpt_hash(vpn, shift, ssize); - hidx = __rpte_to_hidx(pte, index); - if (hidx & _PTEIDX_SECONDARY) - hash = ~hash; - slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; - slot += hidx & _PTEIDX_GROUP_IX; + slot = compute_slot(pte, vpn, index, shift, ssize); if (!firmware_has_feature(FW_FEATURE_BULK_REMOVE)) { /* * lpar doesn't use the passed actual page size |