AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

[ARM] 5389/1: Make sure the pmd entries are visible by the secondary CPU

Browse Source 
The __cpu_up() function in arch/arm/kernel/smp.c sets the pmd entries
without flushing or cleaning them.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Catalin Marinas 2009-02-11 13:14:57 +01:00 committed by Russell King
parent 7279dc3e91
commit e9fc78230c
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/kernel/smp.c
View File

@ -93,6 +93,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
pmd = pmd_offset(pgd + pgd_index(PHYS_OFFSET), PHYS_OFFSET);
*pmd = __pmd((PHYS_OFFSET & PGDIR_MASK) |
PMD_TYPE_SECT | PMD_SECT_AP_WRITE);
flush_pmd_entry(pmd);
/*
* We need to tell the secondary core where to find
@ -130,6 +131,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
secondary_data.pgdir = 0;
*pmd = __pmd(0);
clean_pmd_entry(pmd);
pgd_free(&init_mm, pgd);
if (ret) {