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authorStefan Kristiansson <stefan.kristiansson@saunalahti.fi>2014-01-11 00:17:38 +0200
committerStafford Horne <shorne@gmail.com>2016-12-12 23:09:06 +0900
commitf47706099bdb8c0e6300d6f5ba8e542861aa3ac5 (patch)
tree8c82c1c5e5b26690231eb1e48627403590825fbc /arch/openrisc/mm/init.c
parent69973b830859bc6529a7a0468ba0d80ee5117826 (diff)
downloadlinux-f47706099bdb8c0e6300d6f5ba8e542861aa3ac5.tar.gz
openrisc: fix PTRS_PER_PGD define
On OpenRISC, with its 8k pages, PAGE_SHIFT is defined to be 13. That makes the expression (1UL << (PAGE_SHIFT-2)) evaluate to 2048. The correct value for PTRS_PER_PGD should be 256. Correcting the PTRS_PER_PGD define unveiled a bug in map_ram(), where PTRS_PER_PGD was used when the intent was to iterate over a set of page table entries. This patch corrects that issue as well. Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Acked-by: Jonas Bonn <jonas@southpole.se> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Stafford Horne <shorne@gmail.com>
Diffstat (limited to 'arch/openrisc/mm/init.c')
-rw-r--r--arch/openrisc/mm/init.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
index 7f94652311d7..b782ce9ccad9 100644
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -110,7 +110,7 @@ static void __init map_ram(void)
set_pmd(pme, __pmd(_KERNPG_TABLE + __pa(pte)));
/* Fill the newly allocated page with PTE'S */
- for (j = 0; p < e && j < PTRS_PER_PGD;
+ for (j = 0; p < e && j < PTRS_PER_PTE;
v += PAGE_SIZE, p += PAGE_SIZE, j++, pte++) {
if (v >= (u32) _e_kernel_ro ||
v < (u32) _s_kernel_ro)