[PATCH v4 08/12] efi: only print saved efi runtime maps instead of all memmap ranges for kexec

Dave Young
2013-11-26T05:57:53Z

For kexec/kdump kernel efi runtime mappings are saved, printing original whole
memmap ranges does not make sense anymore. So introduce a new function to only
print runtime maps in case kexec/kdump kernel is used.

Signed-off-by: Dave Young <dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
arch/x86/platform/efi/efi.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index fafeb40..c65b0b8 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -430,6 +430,24 @@ int __init efi_memblock_x86_reserve_range(void)
return 0;
}

+/* for kexec kernel runtime maps are passed in setup_data */
+static void __init print_saved_runtime_map(void)
+{
+#ifdef EFI_DEBUG
+ int i;
+ efi_memory_desc_t *md;
+
+ for (i = 0; i < nr_efi_runtime_map; i++) {
+ md = esdata->map + i;
+ pr_info("mem%02u: type=%u, attr=0x%llx, "
+ "range=[0x%016llx-0x%016llx) (%lluMB)\n",
+ i, md->type, md->attribute, md->phys_addr,
+ md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT),
+ (md->num_pages >> (20 - EFI_PAGE_SHIFT)));
+ }
+#endif /* EFI_DEBUG */
+}
+
static void __init print_efi_memmap(void)
{
#ifdef EFI_DEBUG
@@ -782,7 +800,10 @@ void __init efi_init(void)
x86_platform.set_wallclock = efi_set_rtc_mmss;
}
#endif
- print_efi_memmap();
+ if (esdata)
+ print_saved_runtime_map();
+ else
+ print_efi_memmap();
}

void __init efi_late_init(void)
--
1.8.3.1