From: Julien Grall <julien.grall@linaro.org>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Thomas Leonard <talex5@gmail.com>,
Dave.Scott@eu.citrix.com, anil@recoil.org,
stefano.stabellini@eu.citrix.com, xen-devel@lists.xenproject.org,
samuel.thibault@ens-lyon.org
Subject: Re: [PATCH ARM v8 2/4] mini-os: arm: interrupt controller
Date: Tue, 21 Oct 2014 16:22:40 +0100 [thread overview]
Message-ID: <54467A40.4090201@linaro.org> (raw)
In-Reply-To: <1413904601.23337.50.camel@citrix.com>
On 10/21/2014 04:16 PM, Ian Campbell wrote:
> On Tue, 2014-10-21 at 15:26 +0100, Julien Grall wrote:
>> Our implementation of ITARGETSR doesn't handle correctly read/write per
>> byte. If the register is RO (such as for the SGIs and PPIs), our write
>> ignore is checking that the guest is writing a word.
>
> That's a bug.
Agree
>> Even though we need to fix it in Xen (I could send a patch for it). We
>> need to keep this implementation if we want mini-os to run on Xen 4.4.x.
>
> We should fix bugs, not workaround them in the guest.
Writing a 32 bits value into those registers is perfectly value and not
a workaround.
In this case, it would make mini-os working directly on Xen 4.4.
--
Julien Grall
next prev parent reply other threads:[~2014-10-21 15:22 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-03 9:20 [PATCH ARM v8 0/4] mini-os: initial ARM support Thomas Leonard
2014-10-03 9:20 ` [PATCH ARM v8 1/4] mini-os: arm: time Thomas Leonard
2014-10-21 10:50 ` Ian Campbell
2014-10-21 14:07 ` [PATCH incomplete] xen: arm: wallclock support (incomplete, needs work/refactoring) Ian Campbell
2014-10-26 9:51 ` [PATCH ARM v8 1/4] mini-os: arm: time Thomas Leonard
2014-10-27 10:34 ` Ian Campbell
2014-11-13 16:29 ` Thomas Leonard
2014-11-14 10:29 ` Ian Campbell
2014-11-19 20:57 ` Konrad Rzeszutek Wilk
2015-01-08 15:52 ` Ian Campbell
2015-01-08 15:58 ` Thomas Leonard
2015-01-08 16:04 ` Ian Campbell
2014-10-03 9:20 ` [PATCH ARM v8 2/4] mini-os: arm: interrupt controller Thomas Leonard
2014-10-21 11:00 ` Ian Campbell
2014-10-21 14:26 ` Julien Grall
2014-10-21 15:16 ` Ian Campbell
2014-10-21 15:22 ` Julien Grall [this message]
2014-10-21 15:35 ` Ian Campbell
2014-10-21 16:03 ` Julien Grall
2014-10-21 18:14 ` Anil Madhavapeddy
2014-10-21 19:18 ` Ian Campbell
2014-10-21 21:54 ` Samuel Thibault
2014-10-22 9:03 ` Ian Campbell
2014-10-22 13:06 ` Julien Grall
2014-10-22 13:14 ` Samuel Thibault
2014-10-28 15:15 ` Thomas Leonard
2014-10-28 15:25 ` Julien Grall
2014-10-28 15:43 ` Thomas Leonard
2014-10-28 15:51 ` Julien Grall
2014-11-14 10:22 ` Thomas Leonard
2014-11-14 11:33 ` Julien Grall
2014-11-14 11:42 ` Ian Campbell
2014-11-14 11:48 ` Julien Grall
2014-11-14 12:01 ` Ian Campbell
2014-10-03 9:20 ` [PATCH ARM v8 3/4] mini-os: arm: build system Thomas Leonard
2014-10-21 11:44 ` Ian Campbell
2014-10-21 21:50 ` Samuel Thibault
2014-10-22 9:01 ` Ian Campbell
2014-10-22 9:59 ` Samuel Thibault
2014-10-26 9:46 ` Thomas Leonard
2014-10-26 9:55 ` Samuel Thibault
2014-10-26 10:25 ` Thomas Leonard
2014-11-17 11:42 ` Thomas Leonard
2014-11-17 11:45 ` Ian Campbell
2014-11-17 11:47 ` Andrew Cooper
2014-11-17 11:47 ` Samuel Thibault
2014-10-03 9:20 ` [PATCH ARM v8 4/4] mini-os: arm: show registers, stack and exception vector on fault Thomas Leonard
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