From: Patrick Staehlin <me@packi.ch>
To: David Abdurachmanov <david.abdurachmanov@gmail.com>,
palmer@sifive.com, aou@eecs.berkeley.edu,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] riscv: add S and U modes to ISA string
Date: Sat, 10 Nov 2018 09:35:15 +0100 [thread overview]
Message-ID: <7958aa50-8808-e909-753c-e232b3d1f84e@packi.ch> (raw)
Message-ID: <20181110083515.a6WE9tGGAv8uCLUir7G3hPQZVG8AO29zC60tcaBUBgg@z> (raw)
In-Reply-To: <20181110064543.12411-1-david.abdurachmanov@gmail.com>
On 10.11.18 07:45, David Abdurachmanov wrote:
>
> The patch adds the missing S and U modes.
This is the same patch I submitted earlier (see v2 here [1], based on
Palmer's feedback). Palmer stated that the "S" extension should not be
exposed to usermode.
Since two people arrived at the same solution, I wonder if the
supervisor mode should really be hidden from userspace, as it's about
the CPU information, not about the environment the calling code is
running as.
[1] https://lkml.org/lkml/2018/11/10/96
Patrick
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next prev parent reply other threads:[~2018-11-10 8:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-10 6:45 [PATCH] riscv: add S and U modes to ISA string David Abdurachmanov
2018-11-10 6:45 ` David Abdurachmanov
2018-11-10 8:35 ` Patrick Staehlin [this message]
2018-11-10 8:35 ` Patrick Staehlin
2018-11-11 22:14 ` Palmer Dabbelt
2018-11-11 22:14 ` Palmer Dabbelt
2018-11-12 6:29 ` David Abdurachmanov
2018-11-12 6:29 ` David Abdurachmanov
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