lkml.org 
[lkml]   [2019]   [Aug]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/3] powerpc/mm: Initialize the HPTE encoding values
Date
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
\
 
 \ /
  Last update: 2019-08-30 14:07    [W:0.150 / U:2.460 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site