From: Gerd Hoffmann <kraxel@redhat.com>
To: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: vineshp@xilinx.com, edgar.iglesias@gmail.com,
john.williams@xilinx.com, qemu-devel@nongnu.org,
peter.maydell@linaro.org
Subject: Re: [Qemu-devel] [PATCH v1 8/8] usb/ehci: Put RAM in undefined MMIO regions
Date: Thu, 25 Oct 2012 14:19:05 +0200 [thread overview]
Message-ID: <50892E39.3070408@redhat.com> (raw)
In-Reply-To: <b93383e7883d0a3382ba39136072b7f22ae86143.1351157627.git.peter.crosthwaite@xilinx.com>
On 10/25/12 11:47, Peter Crosthwaite wrote:
> Just put RAM regions in the unimplemented spaces in the MMIO region. These
> regions have undefined behaviour, but this at least stops QEMU from segfaulting
> when the guest bangs on these registers (and sucessfully fakes reading and
> writing the registers with no side effects).
Should not be needed, memory api should deal with that properly.
Something is fishy somewhere. Maybe the dmacontext thing Peter Maydell
noted for patch 5.
cheers,
Gerd
next prev parent reply other threads:[~2012-10-25 12:19 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-25 9:47 [Qemu-devel] [PATCH v1 0/8] Sysbus EHCI + Zynq USB Peter Crosthwaite
2012-10-25 9:47 ` [Qemu-devel] [PATCH v1 1/8] usb/ehci: parameterise the register region offsets Peter Crosthwaite
2012-10-25 12:04 ` Gerd Hoffmann
2012-10-25 9:47 ` [Qemu-devel] [PATCH v1 2/8] usb/ehci: Abstract away PCI DMA API Peter Crosthwaite
2012-10-25 9:47 ` [Qemu-devel] [PATCH v1 3/8] usb/ehci: seperate out PCIisms Peter Crosthwaite
2012-10-25 12:08 ` Gerd Hoffmann
2012-10-25 12:44 ` Peter Crosthwaite
2012-10-25 12:57 ` Gerd Hoffmann
2012-10-25 13:19 ` Peter Crosthwaite
2012-10-25 9:47 ` [Qemu-devel] [PATCH v1 4/8] usb/ehci: Add usb-ehci-sysbus Peter Crosthwaite
2012-10-25 9:55 ` Peter Maydell
2012-10-25 13:17 ` Avi Kivity
2012-10-25 12:10 ` Gerd Hoffmann
2012-10-25 12:39 ` Peter Crosthwaite
2012-10-25 9:47 ` [Qemu-devel] [PATCH v1 5/8] xilinx_zynq: add USB controllers Peter Crosthwaite
2012-10-25 12:12 ` Gerd Hoffmann
2012-10-25 12:16 ` Peter Maydell
2012-10-25 12:56 ` Peter Crosthwaite
2012-10-25 13:14 ` Gerd Hoffmann
2012-10-25 13:24 ` Peter Crosthwaite
2012-10-25 13:49 ` Gerd Hoffmann
2012-10-25 14:10 ` Gerd Hoffmann
2012-10-25 23:54 ` Peter Crosthwaite
2012-10-25 23:59 ` Peter Crosthwaite
2012-10-26 6:49 ` Gerd Hoffmann
2012-10-26 6:59 ` Peter Crosthwaite
2012-10-25 9:47 ` [Qemu-devel] [PATCH v1 6/8] usb/ehci: Guard definition of EHCI_DEBUG Peter Crosthwaite
2012-10-25 9:47 ` [Qemu-devel] [PATCH v1 7/8] usb/ehci: Debug mode compile fixes Peter Crosthwaite
2012-10-25 9:47 ` [Qemu-devel] [PATCH v1 8/8] usb/ehci: Put RAM in undefined MMIO regions Peter Crosthwaite
2012-10-25 12:19 ` Gerd Hoffmann [this message]
2012-10-25 13:03 ` Peter Crosthwaite
2012-10-25 13:12 ` Peter Maydell
2012-10-25 13:21 ` Avi Kivity
2012-10-25 13:28 ` Peter Maydell
2012-10-25 13:41 ` Avi Kivity
2012-10-25 13:50 ` Peter Maydell
2012-10-25 13:57 ` Avi Kivity
2012-10-25 13:59 ` Peter Crosthwaite
2012-10-25 14:08 ` Peter Maydell
2012-10-25 13:20 ` Avi Kivity
2012-10-29 14:08 ` [Qemu-devel] [PATCH v1 0/8] Sysbus EHCI + Zynq USB Peter Crosthwaite
2012-10-30 7:20 ` Gerd Hoffmann
2012-10-30 8:24 ` Peter Crosthwaite
2012-10-30 10:30 ` Gerd Hoffmann
2012-10-30 12:14 ` Andreas Färber
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