From: Jan Kiszka <jan.kiszka@web.de>
To: qemu-devel <qemu-devel@nongnu.org>
Cc: kvmarm <kvmarm@lists.cs.columbia.edu>, kvm <kvm@vger.kernel.org>
Subject: [Qemu-devel] vexpress: Horribly slow MMC emulation on ARM host
Date: Mon, 16 Feb 2015 07:56:22 +0100 [thread overview]
Message-ID: <54E19496.6020905@web.de> (raw)
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Hi,
this basically concludes my problems of getting KVM running on the
Jetson TK1 board with QEMU: all fine now, provided I switch from
qemu-system-arm -machine vexpress-a15 -sd disk.img ...
to
qemu-system-arm -machine vexpress-a15 \
-drive file=disk.img,if=none,id=disk \
-device virtio-blk-device,drive=disk ...
This applies to both emulated and KVM accelerated mode. If I run the
same image (and guest kernel) emulated on my x86 box, there is still a
difference between both disk modes, but it's not that excessive. On ARM
the system requires minutes to boot from MMC - if it doesn't run into
timeouts earlier. It's seconds with virtio.
Known problem?
Jan
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next reply other threads:[~2015-02-16 6:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-16 6:56 Jan Kiszka [this message]
2015-02-16 9:11 ` [Qemu-devel] vexpress: Horribly slow MMC emulation on ARM host Peter Maydell
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