From: "Maciej W. Rozycki" <macro@linux-mips.org>
To: Damien Le Moal <Damien.LeMoal@wdc.com>
Cc: "palmerdabbelt@google.com" <palmerdabbelt@google.com>,
"anup@brainfault.org" <anup@brainfault.org>,
Anup Patel <Anup.Patel@wdc.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Atish Patra <Atish.Patra@wdc.com>,
"aou@eecs.berkeley.edu" <aou@eecs.berkeley.edu>,
"palmer@dabbelt.com" <palmer@dabbelt.com>,
"paul.walmsley@sifive.com" <paul.walmsley@sifive.com>,
Alistair Francis <Alistair.Francis@wdc.com>,
"linux-riscv@lists.infradead.org"
<linux-riscv@lists.infradead.org>
Subject: Re: [PATCH] RISC-V: Check clint_time_val before use
Date: Sat, 26 Sep 2020 11:09:41 +0100 (BST) [thread overview]
Message-ID: <alpine.LFD.2.21.2009261054270.3561363@eddie.linux-mips.org> (raw)
In-Reply-To: <0e1990c99bf2a342cd2e78ec7ecfc2fdecaf67fb.camel@wdc.com>
On Sat, 26 Sep 2020, Damien Le Moal wrote:
> > > Applying this on top of rc6, I now get a hang on Kendryte boot...
> > > No problems without the patch on the other hand.
> >
> > Not sure about the issue with Kendryte but I get a crash on
> > QEMU virt machine without this patch.
>
> With this applied in addition to your patch, it works.
>
> diff --git a/drivers/clocksource/timer-clint.c b/drivers/clocksource/timer-
> clint.c
> index d17367dee02c..8dbec85979fd 100644
> --- a/drivers/clocksource/timer-clint.c
> +++ b/drivers/clocksource/timer-clint.c
> @@ -37,7 +37,7 @@ static unsigned long clint_timer_freq;
> static unsigned int clint_timer_irq;
>
> #ifdef CONFIG_RISCV_M_MODE
> -u64 __iomem *clint_time_val;
> +u64 __iomem *clint_time_val = NULL;
> #endif
Hmm, BSS initialisation issue?
Maciej
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next prev parent reply other threads:[~2020-09-26 10:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-26 7:27 [PATCH] RISC-V: Check clint_time_val before use Anup Patel
2020-09-26 9:25 ` Damien Le Moal
2020-09-26 9:31 ` Anup Patel
2020-09-26 9:46 ` Damien Le Moal
2020-09-26 9:57 ` Anup Patel
2020-09-26 10:01 ` Damien Le Moal
2020-09-26 10:09 ` Maciej W. Rozycki [this message]
2020-09-26 10:25 ` Damien Le Moal
2020-09-26 10:52 ` Maciej W. Rozycki
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