From: "H. Peter Anvin" <hpa@zytor.com>
To: William Breathitt Gray <vilhelm.gray@gmail.com>,
tglx@linutronix.de, mingo@redhat.com
Cc: gregkh@linuxfoundation.org, x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] base: isa: Remove X86_32 dependency
Date: Thu, 21 Jan 2016 11:40:11 -0800 [thread overview]
Message-ID: <56A1341B.3010702@zytor.com> (raw)
In-Reply-To: <20160121155617.GA20054@sophia>
On 01/21/16 07:56, William Breathitt Gray wrote:
> Many motherboards utilize a LPC to ISA bridge in order to decode
> ISA-style port-mapped I/O addresses. This is particularly true for
> embedded motherboards supporting the PC/104 bus (a bus specification
> derived from ISA).
>
> These motherboards are now commonly running 64-bit x86 processors. The
> X86_32 dependency should be removed from the ISA configuration option in
> order to support these newer motherboards.
>
> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
CONFIG_ISA is mainly used to exclude drivers that are for ISA-specific
devices.
However, PC/104 is indeed an actual ISA parallel bus, and as you say
widely used in embedded systems. However, I would like to see if there
are anything hidden with !CONFIG_ISA which makes sense in PC104 systems.
-hpa
next prev parent reply other threads:[~2016-01-21 19:40 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-21 15:56 [PATCH] base: isa: Remove X86_32 dependency William Breathitt Gray
2016-01-21 19:40 ` H. Peter Anvin [this message]
2016-01-21 23:43 ` William Breathitt Gray
2016-01-21 23:47 ` H. Peter Anvin
2016-01-22 0:01 ` William Breathitt Gray
2016-01-22 8:07 ` Thomas Gleixner
2016-01-21 21:18 ` kbuild test robot
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