linux-kernel - Re: [PATCH 1/1] RISC-V: load initrd wherever it fits into memory

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Date:   Wed, 21 Jul 2021 23:09:04 -0700 (PDT)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     xypron.glpk@....de
CC:     ardb@...nel.org, schwab@...ux-m68k.org,
        Paul Walmsley <paul.walmsley@...ive.com>,
        aou@...s.berkeley.edu, Atish Patra <Atish.Patra@....com>,
        linux-efi@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, xypron.glpk@....de
Subject:     Re: [PATCH 1/1] RISC-V: load initrd wherever it fits into memory

On Tue, 29 Jun 2021 06:40:18 PDT (-0700), xypron.glpk@....de wrote:
> Requiring that initrd is loaded below RAM start + 256 MiB led to failure
> to boot SUSE Linux with GRUB on QEMU, cf.
> https://lists.gnu.org/archive/html/grub-devel/2021-06/msg00037.html
>
> Remove the constraint.
>
> Reported-by: Andreas Schwab <schwab@...ux-m68k.org>
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>
> ---
>  arch/riscv/include/asm/efi.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/include/asm/efi.h b/arch/riscv/include/asm/efi.h
> index 7542282f1141..649ab513dc99 100644
> --- a/arch/riscv/include/asm/efi.h
> +++ b/arch/riscv/include/asm/efi.h
> @@ -33,10 +33,10 @@ static inline unsigned long efi_get_max_fdt_addr(unsigned long image_addr)
>
>  #define ARCH_EFI_IRQ_FLAGS_MASK (SR_IE | SR_SPIE)
>
> -/* Load initrd at enough distance from DRAM start */
> +/* Load initrd anywhere in system RAM */
>  static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
>  {
> -	return image_addr + SZ_256M;
> +	return ULONG_MAX;
>  }
>
>  #define alloc_screen_info(x...)		(&screen_info)

Thanks, this is on fixes.