Re: [PATCH v6 14/14] x86: kdebugfs do not use __va for gettingsetup_data virt addr

[Matt Fleming]

On Mon, 16 Dec, at 05:30:35PM, Dave Young wrote:
> kdump kernel will use memmap=exactmap kernel cmdline, but __va does not
> work in case memmap=exactmap, so let's always use ioremap_cache.
> 
> Signed-off-by: Dave Young <dyoung@xxxxxxxxxx>
> ---
>  arch/x86/kernel/kdebugfs.c | 35 +++++++++++------------------------
>  1 file changed, 11 insertions(+), 24 deletions(-)

Dave, I've no idea why this change is necessary from the commit log. Is
it required for kexec to function on EFI? Why does __va() not work in
the memmap=exactmap case?

-- 
Matt Fleming, Intel Open Source Technology Center
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