After recent patches* is_kdump_kernel() should return 1 in the
case where code is executing in a crashkernel and 0 otherwise.
It is save to use outside of CONFIG_KDUMP.
* http://lkml.org/lkml/2008/7/28/445
Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
Index: linux-2.6/arch/ia64/hp/common/sba_iommu.c
===================================================================
--- linux-2.6.orig/arch/ia64/hp/common/sba_iommu.c 2008-07-29 10:57:17.000000000 +1000
+++ linux-2.6/arch/ia64/hp/common/sba_iommu.c 2008-07-29 10:57:51.000000000 +1000
@@ -2070,14 +2070,13 @@ sba_init(void)
if (!ia64_platform_is("hpzx1") && !ia64_platform_is("hpzx1_swiotlb"))
return 0;
-#if defined(CONFIG_IA64_GENERIC) && defined(CONFIG_CRASH_DUMP) && \
- defined(CONFIG_PROC_FS)
+#if defined(CONFIG_IA64_GENERIC)
/* If we are booting a kdump kernel, the sba_iommu will
* cause devices that were not shutdown properly to MCA
* as soon as they are turned back on. Our only option for
* a successful kdump kernel boot is to use the swiotlb.
*/
- if (elfcorehdr_addr < ELFCORE_ADDR_MAX) {
+ if (is_kdump_kernel()) {
if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
panic("Unable to initialize software I/O TLB:"
" Try machvec=dig boot option");
--
--
Horms
--
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