On 09/09/2010 04:26 PM, Alexander Graf wrote:
On 09.09.2010, at 20:13, Hollis Blanchard wrote:
On 09/09/2010 04:16 AM, Liu Yu-B13201 wrote:
Yes, it's hard to resume TLB0. We only resume TLB1 in previous code.
But TLB1 is even more smaller (13 free entries) than 440,
So that it
pages, and must split the guest
mapping into multiple large host pages.
When will you have hugetlbfs for e500? That's going to make such a
dramatic difference, I'm not sure it's worth investing time in
optimizing the MMU code until then.
Hollis Blanchard
Mentor Graphics, Embedded
On 09/09/2010 04:03 AM, Liu Yu-B13201 wrote:
-Original Message-
From: kvm-ppc-ow...@vger.kernel.org
[mailto:kvm-ppc-ow...@vger.kernel.org] On Behalf Of Hollis Blanchard
Sent: Thursday, September 09, 2010 12:07 AM
To: Liu Yu-B13201
Cc: kvm@vger.kernel.org; kvm-...@vger.kernel.org; ag
demand-faulted rather than swapped
wholesale. To do that, you would need to track the host PID in KVM data
structures, I guess in the tlbe_ref structure.
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to restore a full guest TLB
working set, but maybe it's not really possible to use all 1024 TLB0
entries in one timeslice anyways).
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#x27;t run
an unmodified guest. It should be possible to build the guest kernel
to run in supervisor or user mode/address space.
I'm new to MIPS, so I'm still looking for other challenges in virtualizing
the instruction set.
Hi Dale, how is this going?
Hollis Blanchard
Mentor Graphics
function like kvm_arch_vcpu_init()?
There are layers of shared code inside arch/powerpc/kvm: e.g. powerpc.c
-> booke.c -> 44x.c...
Hollis Blanchard
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of places to patch itself at
runtime in fast paths... see Documentation/powerpc/cpu_features.txt for
some background.
Since we already know (at build time) the location of code that needs
patching, we don't need to scan at all. (I also shudder to think of the
number of page faults
[Resending...]
Please reconcile this with
http://www.linux-kvm.org/page/PowerPC_Hypercall_ABI, which has been
discussed in the (admittedly closed) Power.org embedded hypervisor
working group. Bear in mind that other hypervisors are already
implementing the documented ABI, so if you have concerns,
On Sun, May 9, 2010 at 8:26 AM, Roel Kluin wrote:
> An index of KVM44x_GUEST_TLB_SIZE is already one too large.
>
> Signed-off-by: Roel Kluin
Acked-by: Hollis Blanchard
Thanks Roel.
-Hollis
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On Tue, Feb 2, 2010 at 3:44 AM, Liu Yu wrote:
> Old method prematurely sets ESR and DEAR.
> Move this part after we decide to inject interrupt,
> which is more like hardware behave.
>
> Signed-off-by: Liu Yu
Acked-by: Hollis Blanchard
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On Mon, Jan 25, 2010 at 3:32 AM, Liu Yu-B13201 wrote:
>
>> -Original Message-
>> From: Alexander Graf [mailto:ag...@suse.de]
>> Sent: Friday, January 22, 2010 7:33 PM
>> To: Liu Yu-B13201
>> Cc: hol...@penguinppc.org; kvm-...@vger.kernel.org;
>> kvm@vger.kernel.org
>> Subject: Re: [PATCH]
On Fri, Jan 8, 2010 at 11:32 AM, Alexander Graf wrote:
>
> On 08.01.2010, at 20:29, Hollis Blanchard wrote:
>
>> On Thu, Jan 7, 2010 at 5:58 PM, Alexander Graf wrote:
>>> Book3S needs some flags in SRR1 to get to know details about an interrupt.
>>>
>>>
On Thu, Jan 7, 2010 at 5:58 PM, Alexander Graf wrote:
> Book3S needs some flags in SRR1 to get to know details about an interrupt.
>
> One such example is the trap instruction. It tells the guest kernel that
> a program interrupt is due to a trap using a bit in SRR1.
>
> This patch implements abov
arch/powerpc/include/asm/kvm_ppc.h | 1 +
> arch/powerpc/kvm/book3s.c | 45 ---
> arch/powerpc/kvm/booke.c | 5
> arch/powerpc/kvm/emulate.c | 3 ++
> 4 files changed, 35 insertions(+), 19 deletions(-)
Acked-by: Hollis
For the record, we've discussed more by IRC, and I think revised
patches will be forthcoming.
-Hollis
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On Mon, Dec 21, 2009 at 10:13 AM, Hollis Blanchard
wrote:
> void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
> {
> unsigned long dec_nsec;
>
> pr_debug("mtDEC: %x\n", vcpu->arch.dec);
> #ifdef CONFIG_PPC64
> /* POWER4+ triggers a
On Mon, Dec 21, 2009 at 6:22 AM, Alexander Graf wrote:
> We treated the DEC interrupt like an edge based one. This is not true for
> Book3s. The DEC keeps firing until mtdec is issued again and thus clears
> the interrupt line.
That's not quite right. The decrementer keeps firing until the top bi
demand Acks from Hollis for code that changes BookE parts when I
> can't say for sure if the change is ok.
>
> Signed-off-by: Alexander Graf
Acked-by: Hollis Blanchard
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KVM.
>
> Signed-off-by: Alexander Graf
Acked-by: Hollis Blanchard
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nclude
> #include
> #include
> +#include
>
> #include
> #include
For some reason, I'm not seeing this build break, but the patch is
obviously correct.
Acked-by: Hollis Blanchard
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On Sun, 2009-10-25 at 15:01 +0200, Avi Kivity wrote:
> On 10/23/2009 02:33 AM, Hollis Blanchard wrote:
> > On Wed, 2009-10-21 at 17:03 +0200, Alexander Graf wrote:
> >
> >> KVM for PowerPC only supports embedded cores at the moment.
> >>
> >> W
gt;
> This patchset implements KVM support for Book3s_64 hosts and guest support
> for Book3s_64 and G3/G4.
Acked-by: Hollis Blanchard
Avi, please apply these patches, and one more (unrelated) to fix the
Book E build that I will send in just a moment.
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set_bit(rel_gfn, memslot->dirty_bitmap);
> + if (!generic_test_le_bit(rel_gfn, memslot->dirty_bitmap))
> + generic___set_le_bit(rel_gfn, memslot->dirty_bitmap);
> }
> }
I don't think I've ever exercised the dirty bitmap code, and I don't
really hav
I am just stating a problem with virtio-net that I
> > noticed. This is just so someone more knowledgeable can be aware of the
> > problem.
> >
> >
>
> Ah, it certainly doesn't byteswap. Maybe nobody tried it. Hollis?
I've never tried it. I've onl
he fact that powerpc now relies on a totally
> qemu upstream implementation of kvm, and does not need it anymore.
>
> Anyway, I'm providing this patch separatedly, so that if it breaks
> for whenever reason, we can identify a bisection point easily
>
> Signed-off-by: Glauber
_KVM_IRQCHIP (which is a close approximation).
I don't know about that... I've definitely thought about implementing an
in-kernel PIC for PowerPC. (That will make more sense as an optimization
once the processors with hypervisor support start hitting the market.)
--
Hollis Blanchard
flag and fires and scheduled handlers
>
> Now these operations are pretty cheap on x86, but maybe that can apply
> to s390.
I don't know how the cycle counts compare, but FWIW normal ppc64 Linux
does almost exactly this (and calls it "lazy irq disabling"). The only
diffe
On Monday 11 May 2009 17:17:53 Anthony Liguori wrote:
> Hollis Blanchard wrote:
> > On Mon, 2009-05-11 at 12:54 -0500, Anthony Liguori wrote:
> >
> >> For future ppcemb's, do you know if there is an equivalent of a PF exit
> >> type? Does the hardw
knowledge, they also don't do IO emulation, so they avoid both
conditionals in the above psuedocode.
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on instructions.
> Page faults are going to have tremendously different performance
> characteristics on PPC too because it's a software managed TLB. There's
> no page table lookup like there is on x86.
To clarify, software-managed TLBs are only found in embedded PowerPC.
(at least not without tunneling them over
> HCs)
I haven't been following this conversation at all. With that in mind...
AFAICS, a hypercall is clearly the higher-performing option, since you
don't need the additional memory load (which could even cause a page
fault in some circumsta
ure that implements instructions for a separate IO
space (not even ia64 does).
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n just cut it out if you don't think it should be
> added.
I don't understand the code being moved, but I guess I don't want it, so
your patch is fine with me.
(Wtf are those magic addresses? And not a single comment?? Aren't we
better than this?)
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On Sat, 2009-05-02 at 10:52 +0300, Avi Kivity wrote:
> Hollis Blanchard wrote:
> >> In that case it's sufficient to have the build system use the upstream
> >> kvm integration (CONFIG_KVM) rather than the qemu-kvm integration
> >> (USE_KVM).
> >&g
ined reference
to `qemu_cache_conf'
However, to restate my point: the build error is not the biggest problem
with this patch. The bigger problems are all the other issues I've
repeatedly described. The build break is the icing on the cake.
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+ *
+ * Copyright IBM Corp. 2007
+ *
+ * Authors: Hollis Blanchard
+ */
+
+#ifndef __LINUX_KVM_POWERPC_H
+#define __LINUX_KVM_POWERPC_H
+
+#include
+
+struct kvm_regs {
+ __u64 pc;
+ __u64 cr;
+ __u64 ctr;
+ __u64 lr
This fixes a build break when KVM_IOAPIC_NUM_PINS is not defined.
Signed-off-by: Hollis Blanchard
---
kvm/libkvm/libkvm.c |4
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/kvm/libkvm/libkvm.c b/kvm/libkvm/libkvm.c
index 0610e3f..ba0a5d1 100644
--- a/kvm/libkvm/libkvm.c
As far as I can see, kvm_destroy_memory_region_works() has nothing to do with
KVM_CAP_DEVICE_ASSIGNMENT, so move the prototype outside that ifdef block.
Signed-off-by: Hollis Blanchard
---
kvm/libkvm/libkvm.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kvm/libkvm
Signed-off-by: Hollis Blanchard
---
kvm/libkvm/kvm-common.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kvm/libkvm/kvm-common.h b/kvm/libkvm/kvm-common.h
index 96361e8..591fb53 100644
--- a/kvm/libkvm/kvm-common.h
+++ b/kvm/libkvm/kvm-common.h
@@ -22,7 +22,7
These patches fix a number of issues with PowerPC builds of qemu-kvm.git.
However, even after applying these patches it still doesn't build, due to
confusion with KVM_UPSTREAM and CONFIG_KVM.
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Apparently $(ARCH) now holds the qemu meaning, rather than the KVM meaning.
Signed-off-by: Hollis Blanchard
---
kvm/libkvm/config-powerpc.mak |4
kvm/libkvm/config-ppc.mak |4
2 files changed, 4 insertions(+), 4 deletions(-)
delete mode 100644 kvm/libkvm/config
On Wed, 2009-04-29 at 11:31 +0300, Avi Kivity wrote:
> Hollis Blanchard wrote:
> >> Since PPC is now supported in upstream QEMU, does it really matter if it
> >> works in qemu-kvm.git?
> >>
> >
> > I was going to take that position too, except Av
7; for now, but obviously that
doesn't help with future changes to these headers. Defining a process
for updating those headers would be useful.
I'll send patches separately.
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This reverts commit 9dc99a28236161a5a1b4c58f1e9c4ec6179cb976.
Aside from the other issues discussed on kvm-devel, this commit breaks the
PowerPC build.
Signed-off-by: Hollis Blanchard
---
Bad mailing list address on my previous mail.
cache-utils.h | 14 --
cutils.c |3
> > clean:
> > - rm -f $(TARGETS) *.o *~ *.dtb
> > + rm -f $(TARGETS) *.o *~
> >
>
> Hollis?
dtb is the compiled (binary) form of dts (source) device tree files.
Think of it like bios.bin: if make clean doesn't delete bios.bin (and it
looks like it doesn
7 Jocelyn Mayer
> *
> - * Copyright 2008 IBM Corp.
> - * Authors: Hollis Blanchard
> - *
> * Permission is hereby granted, free of charge, to any person obtaining a
> copy
> * of this software and associated documentation files (the "Software"), to
> deal
ckage a KVM enabled qemu-system-ppcemb, do they?
The more people who notice when the PowerPC build breaks, the better.
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On Tue, 2009-04-28 at 17:20 -0500, Anthony Liguori wrote:
> Hollis Blanchard wrote:
> > On Thu, 2009-04-23 at 18:40 +0300, Avi Kivity wrote:
> >
> >> Still missing:
> >> - I have not tested powerpc or ia64. Patches welcome!
> >>
> >
> >
st
cp from a Linux tree, or must I add funny ifdefs somehow?
Here's one patch that I think will be needed:
Set kvm_arch=powerpc for PPC builds.
The name of the Linux arch directory is "powerpc", not "ppc".
Signed-off-by: Hollis Blanchard
diff --git a/configure b/co
ures (e.g. PowerPC) *don't*
implement qemu_sync_idcache().
Are you starting to understand my objections to this patch?
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On Wed, 2009-04-22 at 09:59 +0800, Zhang, Xiantao wrote:
> Hollis Blanchard wrote:
> > On Tue, 2009-04-21 at 20:21 +0300, Avi Kivity wrote:
> >> Hollis Blanchard wrote:
> >>> On Tue, 2009-04-21 at 10:08 +, Avi Kivity wrote:
> >>>
> >>>
On Tue, 2009-04-21 at 20:21 +0300, Avi Kivity wrote:
> Hollis Blanchard wrote:
> > On Tue, 2009-04-21 at 10:08 +, Avi Kivity wrote:
> >
> >> From: Xiantao Zhang
> >>
> >> ia64 depends on platform provides synced idcache after DMA operation.
> &
igned-off-by: Avi Kivity
I pointed out some problems with this patch a couple weeks ago:
http://article.gmane.org/gmane.comp.emulators.kvm.devel/30475
Why was it still applied?
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re the processor expert... :)
Qemu calls into KVM via an ioctl, and processor-specific KVM code
(that's you) somehow jumps into guest mode.
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gt; +qemu_sync_idcache((unsigned long)qiov->iov[i].iov_base,
> +(unsigned long)(qiov->iov[i].iov_base + copy));
> p += copy;
> count -= copy;
> }
This is way too generic a call for this location. Other architectures
also ne
On Wednesday 11 March 2009 04:05:10 Avi Kivity wrote:
> Hollis Blanchard wrote:
> > Hi, I notice the old wiki has been replaced with
> > http://www.linux-kvm.org/ ... unfortunately it seems to be missing *all*
> > PowerPC information. Can this be recovered please?
> >
&g
eventually we'll have a shared userspace executable.
That would be great! First we'll need a working qemu wiki though...
maybe you can solve that problem at the same time.
What timeframe are we talking about? Next week? 6 months? Just a
brainstorm?
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Hi, I notice the old wiki has been replaced with
http://www.linux-kvm.org/ ... unfortunately it seems to be missing *all*
PowerPC information. Can this be recovered please?
I have no idea what other pages may be missing.
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On Fri, 2009-02-20 at 09:44 -0600, Hollis Blanchard wrote:
>
> Avi, would you pull kvm-userspace
> 05acb1ae99a8b55c9745f2e566010213cf52a819 into maint/2.6.29 branch
> please?
Also needed in maint/2.6.29:
commit 3f7cba35281a5b2dba008179a4979d737105574d
Author: Avi Kivity
Date: T
On Fri, 2009-02-20 at 10:42 +0530, Jaswinder Singh Rajput wrote:
> On Thu, 2009-02-19 at 15:50 -0600, Hollis Blanchard wrote:
> > A recent kernel merge breaks kvm-userspace build:
> > make[1]: Entering directory `/root/hollisb/kvm-userspace.git/libkvm'
> >
ended ../kernel/include/linux/types.h.
Avi, suggestions? More "make sync" hacks?
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kvm.h and qemu-kvm.h,
> and would break compilation.
>
> Signed-off-by: Glauber Costa
I actually haven't tried to build kvm-userspace for PPC since we got
upstream qemu working...
I'm a little confused though, because it doesn't look like even x86 is
using this?
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On Thu, 2009-01-15 at 11:36 +0200, Avi Kivity wrote:
> Hollis Blanchard wrote:
> > Avi, these patches fix build issues in the new e500 code. Please apply for
> > 2.6.29. Thanks!
> >
>
> Applied for 2.6.30, but e500 isn't in 2.6.29?
My mistake. Thanks!
From: Liu Yu
---
arch/powerpc/kvm/e500_emulate.c |2 --
arch/powerpc/kvm/e500_tlb.c |6 +++---
arch/powerpc/kvm/e500_tlb.h |2 +-
3 files changed, 4 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index d3c0c7c..7a
From: Liu Yu
Commit 2a4aca1144394653269720ffbb5a325a77abd5fa removed old method _tlbia().
Signed-off-by: Liu Yu
Signed-off-by: Hollis Blanchard
---
arch/powerpc/kvm/e500_tlb.c | 10 +-
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch
From: Liu Yu
So, KVM needs to read tlbcam_index to know exactly
which TLB1 entry is unused by host.
Signed-off-by: Liu Yu
Acked-by: Kumar Gala
Signed-off-by: Hollis Blanchard
---
arch/powerpc/include/asm/mmu-fsl-booke.h |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git
Avi, these patches fix build issues in the new e500 code. Please apply for
2.6.29. Thanks!
-Hollis
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ode doesn't even build any
more.
Signed-off-by: Hollis Blanchard
diff --git a/arch/powerpc/include/asm/kvm_host.h
b/arch/powerpc/include/asm/kvm_host.h
index 1c61876..dfdf13c 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -111,11 +111,6 @@ stru
ite
After the rewrite of KVM's debug support, this code doesn't even build any
more.
Signed-off-by: Hollis Blanchard
diff --git a/arch/powerpc/include/asm/kvm_host.h
b/arch/powerpc/include/asm/kvm_host.h
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_h
PowerPC KVM support was accepted into upstream qemu. To ease the merge
conflicts, you should apply this patch to remove all traces of PowerPC
KVM code from kvm-userspace before the next qemu pull.
Signed-off-by: Hollis Blanchard
---
You'll also want to remove qemu/pc-bios/bamboo.dtb, wh
This seems wrong to me, and also contradicts the "building an external
module with older kernels" directions at
http://kvm.qumranet.com/kvmwiki/Code .
Avi, did something in the build procedure break recently?
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On Thu, 2008-12-11 at 17:05 +0100, Jan Kiszka wrote:
> Hollis Blanchard wrote:
> > On Thu, 2008-12-11 at 13:53 +0100, Christian Ehrhardt wrote:
> >> This is v2 as version one had a type in it occured when splitting patches.
> >> Mercurial somehow lost my changes to the p
s);
> return called;
> }
This patch breaks uniprocessor builds, because smp_call_function_many()
is only defined for CONFIG_SMP.
Avi, I think you should be able to build a PowerPC KVM kernel at this
point? That would have caught this error. Rusty, could you ack the
following:
cpumask:
KVM PowerPC support for qemu gdbstub
> >
> > From: Hollis Blanchard <[EMAIL PROTECTED]>
> >
> > Add basic KVM PowerPC support to qemu's gdbstub introducing a kvm ppc style
> > mmu implementation that uses the kvm_translate ioctl.
> > This also requires to save
rch=i686-mcpu=i686-malign-functions=4 -O2 -m64
> >> -D__x86_64__ -MMD -MF ./.libkvm-x86.d -g -fomit-frame-pointer -Wall
> >> -fno-stack-protector -I /usr/src/kvm-79/kernel/include -c -o
> >> libkvm-x86.o libkvm-x86.c
>
> but the Makefile is wrong
I don't
nd use that size instead of alloc_page() in the guest?
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On Wed, 2008-12-03 at 13:22 -0600, Hollis Blanchard wrote:
> On Wed, 2008-12-03 at 19:06 +0200, Avi Kivity wrote:
> > Hollis Blanchard wrote:
> > >
> > >> I'm not thrilled about the private exit timing statistics gathering,
> > >> hopefully it
On Wed, 2008-12-03 at 19:06 +0200, Avi Kivity wrote:
> Hollis Blanchard wrote:
> >
> >> I'm not thrilled about the private exit timing statistics gathering,
> >> hopefully it can be morphed into the more general framework.
> >>
> >
> >
From: Deepa Srinivasan <[EMAIL PROTECTED]>
Add a test program ("hello world") to exercise printf() in libcflat.
Signed-off-by: Deepa Srinivasan <[EMAIL PROTECTED]>
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
---
user/config-powerpc.mak|3 ++-
us
Hi Avi, among these patches are fixes for a number of bugs in kvm-userspace,
including the qemu build break and bugs in the "user" directory. Please apply.
-Hollis
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Fixes PowerPC kvm-userspace build.
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
---
qemu/Makefile.target |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/qemu/Makefile.target b/qemu/Makefile.target
index 05ace8e..bb24cc0 100644
--- a/qemu/Makefile.target
+++
From: Deepa Srinivasan <[EMAIL PROTECTED]>
Test cases must be loaded at 1 MB, their link address.
Signed-off-by: Deepa Srinivasan <[EMAIL PROTECTED]>
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
---
user/main-ppc.c | 13 +++--
1 files changed, 11 insertio
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
---
user/main-ppc.c | 11 +--
1 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/user/main-ppc.c b/user/main-ppc.c
index c4ddcef..5fdf28e 100644
--- a/user/main-ppc.c
+++ b/user/main-ppc.c
@@ -69,7 +69,7 @@ stat
From: Deepa Srinivasan <[EMAIL PROTECTED]>
Move the "-ffreestanding" compiler option (to avoid built-in functions) to the
correct place in the Makefile.
Signed-off-by: Deepa Srinivasan <[EMAIL PROTECTED]>
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
---
us
On Wed, 2008-12-03 at 13:05 +0200, Avi Kivity wrote:
> Hollis Blanchard wrote:
> > I'm also seeing a build dependency issue with dyngen-opc.h that I don't see
> > upstream. I haven't sorted that out yet, but "make
> > qemu/ppcemb-softmmu/dyn
On Wed, 2008-12-03 at 13:32 +0200, Avi Kivity wrote:
> Hollis Blanchard wrote:
> > Hi Avi, here's the latest batch of PowerPC kernel patches.
> >
> > The first set dramatically improve performance. Most importantly, we add
> > support for large host pages with KV
On Wed, 2008-12-03 at 08:35 +1030, Rusty Russell wrote:
> On Wednesday 03 December 2008 05:38:21 Hollis Blanchard wrote:
> > I just spent a number of hours tracking this one down, and I'm not too
> > thrilled about it. vp_find_vq() does the memory allocation for virtio
> &
tian Ehrhardt <[EMAIL PROTECTED]>
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
diff --git a/arch/powerpc/include/asm/kvm_host.h
b/arch/powerpc/include/asm/kvm_host.h
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -71,6 +71,49 @@ struct
Hi Avi, here's the latest batch of PowerPC kernel patches.
The first set dramatically improve performance. Most importantly, we add
support for large host pages with KVM (i.e. PAGE_SHIFT > 12). (Large *guest*
pages have already been supported since day 1, since the guest kernel uses
them for the l
The only significant changes were to kvmppc_exit_timing_write() and
kvmppc_exit_timing_show(), both of which were dramatically simplified.
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
diff --git a/arch/powerpc/include/asm/kvm_host.h
b/arch/powerpc/include/asm/kvm_host.h
---
KVM on 440 has always been able to handle large guest mappings with 4K host
pages -- we must, since the guest kernel uses 256MB mappings.
This patch makes KVM work when the host has large pages too (tested with 64K).
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
diff --git a/arch/p
mance improvement,
since that processing currently must be done on *every* guest exit.
Accordingly, KVM needs to be able to access and increment tlb_44x_index.
(KVM on 440 cannot be a module, so there is no need to export this symbol.)
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
Acked-by:
Store shadow TLB entries in memory, but only use it on host context switch
(instead of every guest entry). This improves performance for most workloads on
440 by reducing the guest TLB miss rate.
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
diff --git a/arch/powerpc/include/asm/kvm
that and to the code simplification, we have a greater chance of
leaving other host userspace mappings in the TLB, instead of forcing all
subsequent tasks to re-fault all their mappings.
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
diff --git a/arch/powerpc/include/asm/kvm_44x.h
existing allocator could mean that "ordinary" allocations
also become non-page-aligned.
Finally, we could use the interface intended for exactly this purpose:
the page allocator. If there's some problem with high memory, don't
allocate it with GFP_HIGHMEM.
--
Hollis Blanc
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
---
qemu/hw/ppc440_bamboo.c | 37 +
1 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/qemu/hw/ppc440_bamboo.c b/qemu/hw/ppc440_bamboo.c
index bf42245..79e4ea8 100644
--- a/q
These patches fix the kvm-userspace qemu build after a recent merge with
upstream qemu.
I'm also seeing a build dependency issue with dyngen-opc.h that I don't see
upstream. I haven't sorted that out yet, but "make
qemu/ppcemb-softmmu/dyngen-opc.h" first works around the problem.
-Hollis
--
To
Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
---
qemu/hw/device_tree.c | 14 +++---
qemu/hw/device_tree.h | 12 ++--
2 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/qemu/hw/device_tree.c b/qemu/hw/device_tree.c
index e73129d..2621ff1 100644
---
would get his PPC box working so he could catch
build breaks like these. Cross-compilers would do as well.
I would also like a pony.
> > Avi, could you revert a8d12f98755be9330fcde055134511f76ecaa538 please?
> >
>
> Here is a patch that reverts change and fixes the root of
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