From: Laurent Dufour <ldufour@linux.ibm.com>
To: mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org,
aneesh.kumar@linux.ibm.com, npiggin@gmail.com
Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] powerpc/mm: Initialize the HPTE encoding values
Date: Fri, 30 Aug 2019 14:07:10 +0200 [thread overview]
Message-ID: <20190830120712.22971-2-ldufour@linux.ibm.com> (raw)
In-Reply-To: <20190830120712.22971-1-ldufour@linux.ibm.com>
Before reading the HPTE encoding values we initialize all of them to -1 (an
invalid value) to later being able to detect the initialized ones.
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
---
arch/powerpc/mm/book3s64/hash_utils.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index c3bfef08dcf8..2039bc315459 100644
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -408,7 +408,7 @@ static int __init htab_dt_scan_page_sizes(unsigned long node,
{
const char *type = of_get_flat_dt_prop(node, "device_type", NULL);
const __be32 *prop;
- int size = 0;
+ int size = 0, idx, base_idx;
/* We are scanning "cpu" nodes only */
if (type == NULL || strcmp(type, "cpu") != 0)
@@ -418,6 +418,11 @@ static int __init htab_dt_scan_page_sizes(unsigned long node,
if (!prop)
return 0;
+ /* Set all the penc values to invalid */
+ for (base_idx = 0; base_idx < MMU_PAGE_COUNT; base_idx++)
+ for (idx = 0; idx < MMU_PAGE_COUNT; idx++)
+ mmu_psize_defs[base_idx].penc[idx] = -1;
+
pr_info("Page sizes from device-tree:\n");
size /= 4;
cur_cpu_spec->mmu_features &= ~(MMU_FTR_16M_PAGE);
@@ -426,7 +431,6 @@ static int __init htab_dt_scan_page_sizes(unsigned long node,
unsigned int slbenc = be32_to_cpu(prop[1]);
unsigned int lpnum = be32_to_cpu(prop[2]);
struct mmu_psize_def *def;
- int idx, base_idx;
size -= 3; prop += 3;
base_idx = get_idx_from_shift(base_shift);
--
2.23.0
next prev parent reply other threads:[~2019-08-30 12:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-30 12:07 [PATCH 0/3] powerpc/mm: Conditionally call H_BLOCK_REMOVE Laurent Dufour
2019-08-30 12:07 ` Laurent Dufour [this message]
2019-09-12 13:32 ` [PATCH 1/3] powerpc/mm: Initialize the HPTE encoding values Aneesh Kumar K.V
2019-09-12 13:37 ` Aneesh Kumar K.V
2019-09-13 10:56 ` Laurent Dufour
2019-08-30 12:07 ` [PATCH 2/3] powperc/mm: read TLB Block Invalidate Characteristics Laurent Dufour
2019-09-12 14:16 ` Aneesh Kumar K.V
2019-09-13 13:55 ` Laurent Dufour
2019-09-12 14:44 ` Aneesh Kumar K.V
2019-09-12 19:26 ` Laurent Dufour
2019-09-13 2:00 ` Aneesh Kumar K.V
2019-09-13 9:10 ` Laurent Dufour
2019-08-30 12:07 ` [PATCH 3/3] powerpc/mm: call H_BLOCK_REMOVE when supported Laurent Dufour
2019-09-12 14:20 ` Aneesh Kumar K.V
2019-09-13 13:16 ` Laurent Dufour
2019-09-12 13:44 ` [PATCH 0/3] powerpc/mm: Conditionally call H_BLOCK_REMOVE Aneesh Kumar K.V
2019-09-13 11:09 ` Laurent Dufour
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