From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
Anton Blanchard <anton@ozlabs.org>
Cc: linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [RFC PATCH 17/17] powerpc/mm/pseries: Use HASH_BULK_REMOVE hcall in guest
Date: Wed, 2 Aug 2017 11:10:16 +0530 [thread overview]
Message-ID: <20170802054016.8927-18-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <20170802054016.8927-1-aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
arch/powerpc/platforms/pseries/lpar.c | 35 ++++++++++++++++++++++++++++++-----
1 file changed, 30 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 436ec1e725d3..0275b357dca0 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -672,7 +672,7 @@ 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 index, shift, slot;
+ unsigned long index, shift;
int psize, ssize, pix;
if (lock_tlbie)
@@ -684,15 +684,40 @@ static void pSeries_lpar_flush_hash_range(unsigned long number, int local)
for (i = 0; i < number; i++) {
vpn = batch->vpn[i];
pte_iterate_hashed_subpages(vpn, psize, index, shift) {
- slot = pSeries_lpar_hpte_find(vpn, psize, ssize);
- pix = plpar_bluk_remove(param, pix, slot, vpn,
- psize, ssize, local);
+ if (!firmware_has_feature(FW_FEATURE_HASH_API)) {
+ unsigned long slot;
+ slot = pSeries_lpar_hpte_find(vpn, psize, ssize);
+ pix = plpar_bluk_remove(param, pix, slot, vpn,
+ psize, ssize, local);
+ } else {
+ unsigned long hash;
+ hash = hpt_hash(vpn, mmu_psize_defs[psize].shift, ssize);
+ /* trim the top bits, we overload them below */
+ hash &= MAX_HTAB_MASK;
+ param[pix] = HBR_REQUEST | HBR_AVPN | hash;
+ param[pix+1] = hpte_encode_avpn(vpn, psize, ssize);
+ pix += 2;
+ if (pix == 8) {
+ rc = plpar_hcall9(H_HASH_BULK_REMOVE, param,
+ param[0], param[1], param[2],
+ param[3], param[4], param[5],
+ param[6], param[7]);
+ BUG_ON(rc != H_SUCCESS);
+ pix = 0;
+ }
+ }
} pte_iterate_hashed_end();
}
if (pix) {
+ unsigned long hcall;
+
/* We have a flush pending */
param[pix] = HBR_END;
- rc = plpar_hcall9(H_BULK_REMOVE, param, param[0], param[1],
+ if (!firmware_has_feature(FW_FEATURE_HASH_API))
+ hcall = H_BULK_REMOVE;
+ else
+ hcall = H_HASH_BULK_REMOVE;
+ rc = plpar_hcall9(hcall, param, param[0], param[1],
param[2], param[3], param[4], param[5],
param[6], param[7]);
BUG_ON(rc != H_SUCCESS);
--
2.13.3
prev parent reply other threads:[~2017-08-02 5:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-02 5:39 [RFC PATCH 00/17] Remove slot tracking from linux page table Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 01/17] powerpc/mm: Update native_hpte_find to return hash pte Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 02/17] powerpc/pseries: Update hpte find helper to take hash value Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 03/17] powerpc/ps3/mm: Add helper for finding hash pte slot using " Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 04/17] powerpc/mm: Add hash invalidate callback Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 05/17] powerpc/mm: use hash_invalidate for __kernel_map_pages() Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 06/17] powerpc/mm: Switch flush_hash_range to not use slot Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 07/17] powerpc/mm: Add hash updatepp callback Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 08/17] powerpc/mm/hash: Don't track hash pte slot number in linux page table Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 09/17] powerpc/mm: Remove unused flag arg in global_invalidates Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 10/17] powerpc/mm: Add new firmware feature HASH API Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 11/17] powerpc/kvm/hash: Implement HASH_REMOVE hcall Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 12/17] powerpc/kvm/hash: Implement HASH_PROTECT hcall Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 13/17] powerpc/kvm/hash: Implement HASH_BULK_REMOVE hcall Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 14/17] powerpc/mm/pseries: Use HASH_PROTECT hcall in guest Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 15/17] powerpc/mm/pseries: Use HASH_REMOVE " Aneesh Kumar K.V
2017-08-02 5:40 ` [RFC PATCH 16/17] powerpc/mm/pseries: Move slot based bulk remove to helper Aneesh Kumar K.V
2017-08-02 12:50 ` Segher Boessenkool
2017-08-02 5:40 ` Aneesh Kumar K.V [this message]
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