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Commit 3f2d4f56 authored by Mika Westerberg's avatar Mika Westerberg Committed by Russell King
Browse files

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: default avatarMika Westerberg <ext-mika.1.westerberg@nokia.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 82c6f5a5

arch/arm/mm/mmu.c

+6 −4
Original line number Diff line number Diff line
@@ -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())