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    Subject[PATCH v4 08/12] efi: only print saved efi runtime maps instead of all memmap ranges for kexec
    Date
    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@redhat.com>
    ---
    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


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