From: Christoph Hellwig <hch@infradead.org>
To: Qiu Wenbo <qiuwenbo@kylinos.com.cn>
Cc: Anup Patel <anup@brainfault.org>,
Christoph Hellwig <hch@infradead.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
linux-riscv <linux-riscv@lists.infradead.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [GIT PULL] RISC-V Fixes for 5.9-rc2
Date: Fri, 4 Sep 2020 14:00:44 +0100 [thread overview]
Message-ID: <20200904130044.GA7842@infradead.org> (raw)
In-Reply-To: <f1be6ee1-0802-82ca-ffdb-4c294925cd9a@kylinos.com.cn>
On Fri, Sep 04, 2020 at 08:58:25PM +0800, Qiu Wenbo wrote:
> I can confirm this patch also breaks K210 support. It seems that
> csr_read(CSR_TIME) will trigger an illegal instruction exception on K210.
CSR_TIME is trapped by just about every implementation I know (which is
explicitly allowed by the spec). That is why we should never use it
from common M-mode code.
next prev parent reply other threads:[~2020-09-04 13:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-21 18:26 [GIT PULL] RISC-V Fixes for 5.9-rc2 Palmer Dabbelt
2020-08-21 19:35 ` Linus Torvalds
2020-09-04 8:31 ` Christoph Hellwig
2020-09-04 9:42 ` Anup Patel
2020-09-04 9:46 ` Christoph Hellwig
2020-09-04 10:04 ` Anup Patel
[not found] ` <f1be6ee1-0802-82ca-ffdb-4c294925cd9a@kylinos.com.cn>
2020-09-04 13:00 ` Christoph Hellwig [this message]
2020-09-04 13:56 ` Anup Patel
2020-09-04 16:03 ` Christoph Hellwig
2020-09-04 16:14 ` Anup Patel
2020-08-21 22:05 ` pr-tracker-bot
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