From d0506a2395eb07bef248de95016d9a8cf8a465ea Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 1 Apr 2016 14:47:36 +0100 Subject: ARM: kexec: remove 512MB restriction on kexec crashdump The real limit is the top of the visible physical address space with the MMU turned off. Hence, we need to limit the crash kernel allocation running-view physical address of the top of the boot-view physical address space. Reviewed-by: Pratyush Anand Signed-off-by: Russell King --- arch/arm/kernel/setup.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'arch/arm/kernel/setup.c') diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 77b54c461c52..d9317eec1eba 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -943,7 +943,6 @@ late_initcall(init_machine_late); * zImage relocating below the reserved region. */ #define CRASH_ALIGN (128 << 20) -#define CRASH_ADDR_MAX (PHYS_OFFSET + (512 << 20)) static inline unsigned long long get_total_mem(void) { @@ -973,9 +972,7 @@ static void __init reserve_crashkernel(void) return; if (crash_base <= 0) { - unsigned long long crash_max = CRASH_ADDR_MAX; - if (crash_max > (u32)~0) - crash_max = (u32)~0; + unsigned long long crash_max = idmap_to_phys((u32)~0); crash_base = memblock_find_in_range(CRASH_ALIGN, crash_max, crash_size, CRASH_ALIGN); if (!crash_base) { -- cgit v1.2.3