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From: Atish Patra <atish.patra@wdc.com>
To: Christoph Hellwig <hch@lst.de>, Palmer Dabbelt <palmer@sifive.com>
Cc: "linux-riscv@lists.infradead.org" <linux-riscv@lists.infradead.org>
Subject: Re: [PATCH 6/9] riscv: also clear all pending interrupts when booting
Date: Thu, 11 Apr 2019 11:52:55 -0700	[thread overview]
Message-ID: <c0ec1014-e2fb-0524-d60c-5baa29566750@wdc.com> (raw)
In-Reply-To: <20190411115623.5749-7-hch@lst.de>

On 4/11/19 4:57 AM, Christoph Hellwig wrote:
> Just in case an old interrupt is pending make sure we clear everything
> asserted before this kernel started.  Based on similar M-mode code in
> opensbi.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>   arch/riscv/kernel/head.S | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S
> index 9344d9ceda24..62d2c9c85433 100644
> --- a/arch/riscv/kernel/head.S
> +++ b/arch/riscv/kernel/head.S
> @@ -22,8 +22,9 @@
>   
>   __INIT
>   ENTRY(_start)
> -	/* Mask all interrupts */
> +	/* Mask and clear all interrupts */
>   	csrw sie, zero
> +	csrw sip, zero
>   
>   	/* Load the global pointer */
>   .option push
> 

Reviewed-by: Atish Patra <atish.patra@wdc.com>

Regards,
Atish

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  parent reply	other threads:[~2019-04-11 18:53 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-11 11:56 misc cleanups Christoph Hellwig
2019-04-11 11:56 ` [PATCH 1/9] riscv: use asm-generic/extable.h Christoph Hellwig
2019-04-25 19:00   ` Paul Walmsley
2019-04-11 11:56 ` [PATCH 2/9] riscv: remove dead big endian code Christoph Hellwig
2019-04-11 15:40   ` Nick Kossifidis
2019-04-11 15:47     ` Christoph Hellwig
2019-04-11 16:08       ` Nick Kossifidis
2019-04-11 16:31         ` Christoph Hellwig
2019-04-11 16:47           ` Nick Kossifidis
2019-04-12  6:07             ` Christoph Hellwig
2019-04-11 11:56 ` [PATCH 3/9] riscv: remove CONFIG_RISCV_ISA_A Christoph Hellwig
2019-04-11 12:21   ` Andreas Schwab
2019-04-12  1:23     ` Palmer Dabbelt
2019-04-12  5:51       ` Christoph Hellwig
2019-04-11 11:56 ` [PATCH 4/9] riscv: turn mm_segment_t into a struct Christoph Hellwig
2019-04-11 11:56 ` [PATCH 5/9] riscv: simplify stack pointer setup in head.S Christoph Hellwig
2019-04-11 20:54   ` Atish Patra
2019-04-11 11:56 ` [PATCH 6/9] riscv: also clear all pending interrupts when booting Christoph Hellwig
2019-04-11 15:43   ` Nick Kossifidis
2019-04-11 18:52   ` Atish Patra [this message]
2019-04-11 11:56 ` [PATCH 7/9] riscv: remove duplicate macros from ptrace.h Christoph Hellwig
2019-04-11 15:46   ` Nick Kossifidis
2019-04-11 15:55     ` Nick Kossifidis
2019-04-11 16:03       ` Nick Kossifidis
2019-04-11 16:17         ` Christoph Hellwig
2019-04-11 16:38           ` Nick Kossifidis
2019-04-11 16:06       ` Christoph Hellwig
2019-04-25 19:13   ` Paul Walmsley
2019-04-25 19:13     ` Paul Walmsley
2019-04-25 19:54     ` Christoph Hellwig
2019-04-25 19:54       ` Christoph Hellwig
2019-04-25 20:05       ` Paul Walmsley
2019-04-25 20:05         ` Paul Walmsley
2019-04-11 11:56 ` [PATCH 8/9] riscv: print the unexpected interrupt cause Christoph Hellwig
2019-04-11 15:52   ` Nick Kossifidis
2019-04-11 15:54     ` Christoph Hellwig
2019-04-25 18:59   ` Paul Walmsley
2019-04-11 11:56 ` [PATCH 9/9] riscv: call pm_power_off from machine_halt / machine_power_off Christoph Hellwig
2019-04-11 18:53   ` Atish Patra
2019-04-25 19:57   ` Paul Walmsley
2019-04-25 19:57     ` Paul Walmsley
2019-05-21 10:33   ` Andreas Schwab

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