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 16/16] powerpc/mm/pseries: Use HASH_BULK_REMOVE hcall in guest
Date: Fri, 27 Oct 2017 09:38:33 +0530 [thread overview]
Message-ID: <20171027040833.3644-17-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/platforms/pseries/lpar.c | 40 ++++++++++++++++++++++++++++-------
1 file changed, 32 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 4ea9224cbeb6..6dffdf654a28 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -684,19 +684,43 @@ 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) {
- long slot;
-
- slot = pSeries_lpar_hpte_find(vpn, psize, ssize);
- if (slot < 0)
- continue;
- pix = plpar_bluk_remove(param, pix, slot, vpn,
- psize, ssize, local);
+ if (!firmware_has_feature(FW_FEATURE_HASH_API)) {
+ long slot;
+
+ slot = pSeries_lpar_hpte_find(vpn, psize, ssize);
+ if (slot < 0)
+ continue;
+ 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);
--
2.13.6
next prev parent reply other threads:[~2017-10-27 4:10 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 ` [PATCH 06/16] powerpc/mm: Switch flush_hash_range to not use slot Aneesh Kumar K.V
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 ` Aneesh Kumar K.V [this message]
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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