[PATCH v3 0/4] x86: Always try to fill acpi_rsdp_addr in boot params

Simon Horman horms at verge.net.au
Fri May 31 02:27:44 PDT 2019


On Fri, May 24, 2019 at 02:23:17PM +0800, Kairui Song wrote:
> This patch sync the behavior of user space kexec and kexec_file_load,
> they will both fill the boot_params.acpi_rsdp_addr with a valid RSDP
> value, to make sure second kernel can always get the RSDP consistently.
> 
> This will make it effortless to boot newer version of kernel (5.0+)
> without specifying acpi_rsdp= cmdline on EFI system even with EFI
> service disabled. Should not change any behavior with older kernels.
> 
> Update from V2:
>   - Drop unneeded 'packed' attribute for boot parameters structure
>   - Don't trust kernel cmdline as a reliable acpi rsdp source
> 
> Update from V1:
>   - Split into multiple patches for a cleaner structure, content is not
>     changed.

Thanks Kairui,

applied.



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