From: Paolo Bonzini <pbonzini@redhat.com>
To: "Hervé Poussineau" <hpoussin@reactos.org>,
"Aurelien Jarno" <aurelien@aurel32.net>
Cc: Peter Maydell <peter.maydell@linaro.org>,
Leon Alrae <leon.alrae@imgtec.com>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] dma/rc4030: do multiple calls to address_space_rw when doing DMA transfers
Date: Wed, 17 Jun 2015 21:15:00 +0200 [thread overview]
Message-ID: <5581C734.505@redhat.com> (raw)
In-Reply-To: <5581BCFA.40503@reactos.org>
On 17/06/2015 20:31, Hervé Poussineau wrote:
>>
>
> Sure. It works well for my test case. Thanks Paolo!
>
> However, it breaks PC machines.
> mtree gives:
> 0000000000000cf8-0000000000000cfb (prio 0, RW): pci-conf-idx
> 0000000000000cf9-0000000000000cf9 (prio 1, RW): piix3-reset-control
> "make check" wants to write 4 bytes to 0xcf8. Your patch makes it write
> only 1 byte, and bad things happen.
Yup, that's the same as the Windows XP breakage. Thanks for the test!
Paolo
prev parent reply other threads:[~2015-06-17 19:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-11 20:30 [Qemu-devel] [PATCH] dma/rc4030: do multiple calls to address_space_rw when doing DMA transfers Hervé Poussineau
2015-06-11 23:30 ` Aurelien Jarno
2015-06-15 20:44 ` Hervé Poussineau
2015-06-16 17:48 ` Aurelien Jarno
2015-06-17 8:33 ` Paolo Bonzini
2015-06-17 17:09 ` Paolo Bonzini
2015-06-17 18:31 ` Hervé Poussineau
2015-06-17 19:15 ` Paolo Bonzini [this message]
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