From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-devel@nongnu.org,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [Qemu-devel] [RFC PATCH 01/10] configure: factor out list of supported Xen/KVM targets
Date: Mon, 17 Sep 2012 19:09:08 +0200 [thread overview]
Message-ID: <50575934.5070304@redhat.com> (raw)
In-Reply-To: <CAFEAcA97Fu4jLcmtSLPstiuzXvBtmxL=JcMwejYasG1Lkc+8cQ@mail.gmail.com>
Il 17/09/2012 19:02, Peter Maydell ha scritto:
> If Xen requires 64 bit physaddrs it should probably just be asserting
> this here, not randomly changing target_phys_bits. In fact all the
> supported Xen target archs already have 64 bit physaddrs, so it's
> harmless. But if there ever were a target Xen arch which didn't support
> 64 bit phys addrs then the right approach would be to convert it to
> do so regardless of whether we were using Xen or not.
No, Xen does not require 64-bit physaddrs, but it supports them even if
you build it for 32-bit. Memory is accessed through a "hole" (the
mapcache) provided by the hypervisor, so that a 32-bit QEMU address
space is enough to run 64-bit guests. At least that's my understanding.
Paolo
next prev parent reply other threads:[~2012-09-17 17:09 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-17 16:00 [Qemu-devel] [RFC PATCH 00/10] Add --disable-tcg Paolo Bonzini
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 01/10] configure: factor out list of supported Xen/KVM targets Paolo Bonzini
2012-09-17 17:02 ` Peter Maydell
2012-09-17 17:09 ` Paolo Bonzini [this message]
2012-09-17 17:13 ` Peter Maydell
2012-09-17 18:21 ` Stefano Stabellini
2012-09-17 18:30 ` Stefano Stabellini
2012-09-17 18:53 ` Stefano Stabellini
2012-09-17 19:15 ` Peter Maydell
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 02/10] configure: add CONFIG_TCG=y to config-host.mak Paolo Bonzini
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 03/10] vl: implement tcg_enabled() and tcg_available() as for other accelerators Paolo Bonzini
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 04/10] tcg: change cpu_restore_state to return void Paolo Bonzini
2012-09-17 17:06 ` Peter Maydell
2012-09-17 17:09 ` Paolo Bonzini
2012-09-17 17:20 ` Peter Maydell
2012-09-17 18:25 ` Paolo Bonzini
2012-09-17 18:57 ` Peter Maydell
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 05/10] exec: small adjustments for TCG separation Paolo Bonzini
2012-09-17 19:17 ` Blue Swirl
2012-09-17 21:47 ` Richard Henderson
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 06/10] monitor: disable info jit if !TCG Paolo Bonzini
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 07/10] configure: emit summary at the very end Paolo Bonzini
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 08/10] configure: add --disable-tcg configure option Paolo Bonzini
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 09/10] i386: move TCG functions out of helper.o, non-TCG functions to cpu.o Paolo Bonzini
2012-09-17 17:12 ` Peter Maydell
2012-09-17 18:39 ` Paolo Bonzini
2012-09-17 19:15 ` Blue Swirl
2012-09-17 16:00 ` [Qemu-devel] [RFC PATCH 10/10] build: do not build TCG files if TCG is disabled Paolo Bonzini
2012-09-17 19:20 ` [Qemu-devel] [RFC PATCH 00/10] Add --disable-tcg Blue Swirl
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