[PATCH v6 10/14] efi: only print saved efi runtime maps instead of all memmap ranges for kexec

Dave Young
2013-12-16T09:30:31Z

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.

changelog:
Matt: use efi_setup instead of esdata
share function print_efi_memmap for both normal and kexec boot.

Signed-off-by: Dave Young <dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
arch/x86/platform/efi/efi.c | 24 +++++++++++++++++-------
1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index e8739aa..62bfb57 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -403,19 +403,16 @@ int __init efi_memblock_x86_reserve_range(void)
return 0;
}

-static void __init print_efi_memmap(void)
+static void __init print_efi_memmap(void *map, int nr_map, int md_size)
{
#ifdef EFI_DEBUG
efi_memory_desc_t *md;
void *p;
int i;

- for (p = memmap.map, i = 0;
- p < memmap.map_end;
- p += memmap.desc_size, i++) {
+ for (p = map, i = 0; i < nr_map; p += md_size, i++) {
md = p;
- pr_info("mem%02u: type=%u, attr=0x%llx, "
- "range=[0x%016llx-0x%016llx) (%lluMB)\n",
+ 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)));
@@ -799,7 +796,20 @@ void __init efi_init(void)
x86_platform.set_wallclock = efi_set_rtc_mmss;
}
#endif
- print_efi_memmap();
+ if (efi_setup) {
+ int s;
+ struct efi_setup_data *data;
+
+ s = sizeof(*data) + nr_efi_runtime_map * sizeof(data->map[0]);
+ data = early_memremap(efi_setup, s);
+ if (!data)
+ return;
+ print_efi_memmap(data->map, nr_efi_runtime_map,
+ sizeof(data->map[0]));
+ early_memunmap(data, s);
+ } else {
+ print_efi_memmap(memmap.map, memmap.nr_map, memmap.desc_size);
+ }
}

void __init efi_late_init(void)
--
1.8.3.1