Re: [PATCH v4 07/12] efi: passing kexec necessary efi data via setup_data

Dave Young
2013-12-05T01:56:15Z

On 12/04/13 at 09:43am, Toshi Kani wrote:
> On Wed, 2013-12-04 at 10:46 +0800, Dave Young wrote:
> > Hi, Toshi
> >
> > > Oh, I think I now understand what the issue was. The z420 firmware
> > > updates the SMBIOS table address in the EFI system table to a virtual
> > > address after calling EFI SetVirtualAddressMap. So, you are passing the
> > > original physical address of the SMBIOS table from the 1st kernel to the
> > > 2nd kernel to put it back to physical. Is that right?
> >
> > Right.
>
> Hi Dave,
>
> The z420 firmware is based on some UEFI core that may be used by other
> vendors as well. Since this handling is totally harmless (just
> redundant), I'd suggest not to have a platform check on this handling.

I have same worry as well, so I agree with you.

Thanks
Dave