From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH 06/16] powerpc/mm: Switch flush_hash_range to not use slot
Date: Fri, 27 Oct 2017 09:38:23 +0530 [thread overview]
Message-ID: <20171027040833.3644-7-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <20171027040833.3644-1-aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
arch/powerpc/mm/hash_native_64.c | 28 ++++++++--------------------
arch/powerpc/platforms/pseries/lpar.c | 17 ++++++++---------
2 files changed, 16 insertions(+), 29 deletions(-)
diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c
index f473a78baab7..8e2e6b92aa27 100644
--- a/arch/powerpc/mm/hash_native_64.c
+++ b/arch/powerpc/mm/hash_native_64.c
@@ -707,10 +707,8 @@ static void native_hpte_clear(void)
static void native_flush_hash_range(unsigned long number, int local)
{
unsigned long vpn;
- unsigned long hash, index, hidx, shift, slot;
+ unsigned long hash, index, shift;
struct hash_pte *hptep;
- unsigned long hpte_v;
- unsigned long want_v;
unsigned long flags;
real_pte_t pte;
struct ppc64_tlb_batch *batch = this_cpu_ptr(&ppc64_tlb_batch);
@@ -730,23 +728,13 @@ static void native_flush_hash_range(unsigned long number, int local)
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;
- hptep = htab_address + slot;
- want_v = hpte_encode_avpn(vpn, psize, ssize);
- native_lock_hpte(hptep);
- hpte_v = be64_to_cpu(hptep->v);
- if (cpu_has_feature(CPU_FTR_ARCH_300))
- hpte_v = hpte_new_to_old_v(hpte_v,
- be64_to_cpu(hptep->r));
- if (!HPTE_V_COMPARE(hpte_v, want_v) ||
- !(hpte_v & HPTE_V_VALID))
- native_unlock_hpte(hptep);
- else
- hptep->v = 0;
+ hptep = native_hpte_find(hash, vpn, psize, ssize);
+ if (!hptep)
+ continue;
+ /*
+ * Invalidate the hpte. NOTE: this also unlocks it
+ */
+ hptep->v = 0;
} pte_iterate_hashed_end();
}
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index e366252e0e93..d32469e40bbc 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -580,14 +580,14 @@ static int pSeries_lpar_hpte_removebolted(unsigned long ea,
static void pSeries_lpar_flush_hash_range(unsigned long number, int local)
{
unsigned long vpn;
- unsigned long i, pix, rc;
+ unsigned long i, rc;
unsigned long flags = 0;
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;
real_pte_t pte;
- int psize, ssize;
+ int psize, ssize, pix;
if (lock_tlbie)
spin_lock_irqsave(&pSeries_lpar_tlbie_lock, flags);
@@ -599,12 +599,11 @@ 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;
+ long slot;
+
+ slot = pSeries_lpar_hpte_find(vpn, psize, ssize);
+ if (slot < 0)
+ continue;
if (!firmware_has_feature(FW_FEATURE_BULK_REMOVE)) {
/*
* lpar doesn't use the passed actual page size
--
2.13.6
next prev parent reply other threads:[~2017-10-27 4:09 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-27 4:08 [PATCH 00/16] Remove hash page table slot tracking from linux PTE Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 01/16] powerpc/mm/hash: Remove the superfluous bitwise operation when find hpte group Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 02/16] powerpc/mm: Update native_hpte_find to return hash pte Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 03/16] powerpc/pseries: Update hpte find helper to take hash value Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 04/16] powerpc/mm: Add hash invalidate callback Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 05/16] powerpc/mm: use hash_invalidate for __kernel_map_pages() Aneesh Kumar K.V
2017-10-27 4:08 ` Aneesh Kumar K.V [this message]
2017-10-27 4:08 ` [PATCH 07/16] powerpc/mm: Add hash updatepp callback Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 08/16] powerpc/mm/hash: Don't track hash pte slot number in linux page table Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 09/16] powerpc/mm: Add new firmware feature HASH API Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 10/16] powerpc/kvm/hash: Implement HASH_REMOVE hcall Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 11/16] powerpc/kvm/hash: Implement HASH_PROTECT hcall Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 12/16] powerpc/kvm/hash: Implement HASH_BULK_REMOVE hcall Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 13/16] powerpc/mm/pseries: Use HASH_PROTECT hcall in guest Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 14/16] powerpc/mm/pseries: Use HASH_REMOVE " Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 15/16] powerpc/mm/pseries: Move slot based bulk remove to helper Aneesh Kumar K.V
2017-10-27 4:08 ` [PATCH 16/16] powerpc/mm/pseries: Use HASH_BULK_REMOVE hcall in guest Aneesh Kumar K.V
2017-10-27 4:34 ` [PATCH 00/16] Remove hash page table slot tracking from linux PTE Paul Mackerras
2017-10-27 5:27 ` Aneesh Kumar K.V
2017-10-27 5:41 ` Paul Mackerras
2017-10-30 7:57 ` Aneesh Kumar K.V
2017-10-30 11:49 ` Aneesh Kumar K.V
2017-10-30 13:14 ` Aneesh Kumar K.V
2017-10-30 13:49 ` Aneesh Kumar K.V
2017-11-21 8:41 ` Aneesh Kumar K.V
2017-10-28 22:35 ` Ram Pai
2017-10-29 14:05 ` Aneesh Kumar K.V
2017-10-29 22:04 ` Paul Mackerras
2017-10-30 0:51 ` Ram Pai
2017-11-01 4:46 ` Michael Ellerman
2017-11-01 11:02 ` Paul Mackerras
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