From: "David S. Miller" <davem@redhat.com>
To: Arun Sharma <arun.sharma@intel.com>
Cc: linux-arch@vger.kernel.org
Subject: Re: SHMLBA and compat tasks
Date: Sun, 29 Feb 2004 21:57:52 -0800 [thread overview]
Message-ID: <20040229215752.3a6f0ce7.davem@redhat.com> (raw)
In-Reply-To: <20040229021105.GA6964@intel.com>
On Sat, 28 Feb 2004 18:11:06 -0800
Arun Sharma <arun.sharma@intel.com> wrote:
> I read that to mean that there is a correctness problem, apart from
> performance issues on some platforms.
>
> How about something like:
>
> else
> #ifndef ARCH_HAS_VCACHE
> if (addr & ~PAGE_MASK)
> #endif
> return -EINVAL;
>
> So that platforms with virtually indexed caches are not affected ?
By your own admittance this will break the conformance in question on
such architectures, and it's also bad to have different rules like
this in general.
Why don't we declare that SHM_LBA must be abided by on all platforms?
POSIX is not a high and mighty law which we must follow blindly, to me
this restriction is nonsensicle and supporting it fully will cause more
grief than just declaring that we don't support it.
next prev parent reply other threads:[~2004-03-01 5:57 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-28 1:41 SHMLBA and compat tasks Arun Sharma
2004-02-28 23:55 ` David S. Miller
2004-02-29 2:11 ` Arun Sharma
2004-03-01 5:57 ` David S. Miller [this message]
2004-03-01 19:33 ` Arun Sharma
2004-03-01 19:41 ` David Mosberger
2004-03-01 20:11 ` David S. Miller
2004-03-01 20:17 ` David Mosberger
2004-03-01 20:16 ` Arun Sharma
2004-03-01 20:55 ` Matthew Wilcox
2004-03-02 19:43 ` Arun Sharma
2004-03-06 2:37 ` Arun Sharma
2004-03-06 7:39 ` David S. Miller
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