linux-kernel - Re: [PATCH 1/3] arc: vdk: Disable halt on reset

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Date:   Wed, 1 Feb 2017 08:52:49 -0800
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        <linux-snps-arc@...ts.infradead.org>
CC:     Ruud Derwig <Ruud.Derwig@...opsys.com>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] arc: vdk: Disable halt on reset

On 02/01/2017 08:42 AM, Alexey Brodkin wrote:
> In recent VDKs ARC cores are configured as "run on reset"
> which made existing kernel configuration outdated to effect that
> slave cores never start execution of the code keeping only master
> online.
> 
> With that fix we're again in sync with VDK platform.
> 
> And while at it we regenerate defconfig via savedefconfig so default
> options are now excluded.
> 
> Signed-off-by: Alexey Brodkin <abrodkin@...opsys.com>
> ---
>  arch/arc/configs/vdk_hs38_smp_defconfig | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/arch/arc/configs/vdk_hs38_smp_defconfig b/arch/arc/configs/vdk_hs38_smp_defconfig
> index 573028f19de7..f6361de41eec 100644
> --- a/arch/arc/configs/vdk_hs38_smp_defconfig
> +++ b/arch/arc/configs/vdk_hs38_smp_defconfig
> @@ -15,7 +15,7 @@ CONFIG_ARC_PLAT_AXS10X=y
>  CONFIG_AXS103=y
>  CONFIG_ISA_ARCV2=y
>  CONFIG_SMP=y
> -# CONFIG_ARC_TIMERS_64BIT is not set

Are you sure abut this part. Ater the timers driver rework, this would enable GFRC
for SMP builds and AFAIKR there were some issues with time with GFRC + nSIM etc..

> +# CONFIG_ARC_SMP_HALT_ON_RESET is not set
>  CONFIG_ARC_UBOOT_SUPPORT=y
>  CONFIG_ARC_BUILTIN_DTB_NAME="vdk_hs38_smp"
>  CONFIG_PREEMPT=y
> @@ -56,7 +56,6 @@ CONFIG_NATIONAL_PHY=y
>  CONFIG_MOUSE_PS2_TOUCHKIT=y
>  CONFIG_SERIO_ARC_PS2=y
>  # CONFIG_LEGACY_PTYS is not set
> -# CONFIG_DEVKMEM is not set
>  CONFIG_SERIAL_8250=y
>  CONFIG_SERIAL_8250_CONSOLE=y
>  CONFIG_SERIAL_8250_DW=y
> @@ -80,7 +79,6 @@ CONFIG_USB_STORAGE=y
>  CONFIG_USB_SERIAL=y
>  # CONFIG_IOMMU_SUPPORT is not set
>  CONFIG_EXT3_FS=y
> -CONFIG_EXT4_FS=y
>  CONFIG_MSDOS_FS=y
>  CONFIG_VFAT_FS=y
>  CONFIG_NTFS_FS=y
>