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ARM: 6052/1: kdump: make kexec work in interrupt context 

When crash happens in interrupt context there is no userspace context.
We always use current->active_mm in those cases.

Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Mika Westerberg 2010-04-13 07:01:46 +01:00 committed by Russell King
parent 82c6f5a5b3
commit 3f2d4f561f
1 changed files with 6 additions and 4 deletions
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10
arch/arm/mm/mmu.c
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@ -1054,10 +1054,12 @@ void setup_mm_for_reboot(char mode)
pgd_t *pgd;
int i;
if (current->mm && current->mm->pgd)
pgd = current->mm->pgd;
else
pgd = init_mm.pgd;
/*
* We need to access to user-mode page tables here. For kernel threads
* we don't have any user-mode mappings so we use the context that we
* "borrowed".
*/
pgd = current->active_mm->pgd;
base_pmdval = PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | PMD_TYPE_SECT;
if (cpu_architecture() <= CPU_ARCH_ARMv5TEJ && !cpu_is_xscale())