Not doing it sometimes invokes crash penalties for us. :-)
We could add some way to skip the invalidation if we know the host is an
implementation that doesn't need it, possibly depending on the context
(is it just DMA he wants to avoid doing this on[1], or do their chips
have a fully
On 10/04/2011 07:55 AM, Stefan Weil wrote:
I learned now that ppc will need flush_icache_range() for kvm, too.
So it won't be possible to implement a uniform handling of
flush_icache_range() for all host architectures.
x86 and IIRC s390 flush_icache_range is a no-op, so it is possible to
call
On 4 October 2011 07:29, Paolo Bonzini pbonz...@redhat.com wrote:
On 10/04/2011 07:55 AM, Stefan Weil wrote:
I learned now that ppc will need flush_icache_range() for kvm, too.
So it won't be possible to implement a uniform handling of
flush_icache_range() for all host architectures.
x86 and
On 10/04/2011 12:55 AM, Stefan Weil wrote:
Am 03.10.2011 23:40, schrieb Scott Wood:
The interface isn't powerpc-specific. It just happens to be the only
arch so far that qemu supports that needs the implementation to do
something (or possibly just the only one where that need has been
On 10/03/2011 03:43 PM, Stefan Weil wrote:
qemu_cache_utils_init() is only used by ppc / ppc64 tcg targets
to initialize the cache before flush_icache_range() is called.
This patch moves the code to tcg/ppc and tcg/ppc64.
Initialisation is called from tcg_target_init() there.
Am 03.10.2011 22:52, schrieb Scott Wood:
On 10/03/2011 03:43 PM, Stefan Weil wrote:
qemu_cache_utils_init() is only used by ppc / ppc64 tcg targets
to initialize the cache before flush_icache_range() is called.
This patch moves the code to tcg/ppc and tcg/ppc64.
Initialisation is called from
On 03.10.2011, at 23:10, Stefan Weil wrote:
Am 03.10.2011 22:52, schrieb Scott Wood:
On 10/03/2011 03:43 PM, Stefan Weil wrote:
qemu_cache_utils_init() is only used by ppc / ppc64 tcg targets
to initialize the cache before flush_icache_range() is called.
This patch moves the code to
On 10/03/2011 04:10 PM, Stefan Weil wrote:
Am 03.10.2011 22:52, schrieb Scott Wood:
On 10/03/2011 03:43 PM, Stefan Weil wrote:
qemu_cache_utils_init() is only used by ppc / ppc64 tcg targets
to initialize the cache before flush_icache_range() is called.
This patch moves the code to tcg/ppc
On 03.10.2011, at 23:40, Scott Wood wrote:
On 10/03/2011 04:10 PM, Stefan Weil wrote:
Am 03.10.2011 22:52, schrieb Scott Wood:
On 10/03/2011 03:43 PM, Stefan Weil wrote:
qemu_cache_utils_init() is only used by ppc / ppc64 tcg targets
to initialize the cache before flush_icache_range() is
On 10/03/2011 04:36 PM, Alexander Graf wrote:
With TCG, we're never executing guest code directly, but always go
through TCG to emulate it. So the only case where we actually need to
flush the icache is in TCG code generation, never outside, right?
Right.
For KVM, I agree. We need some
On 10/03/2011 04:43 PM, Alexander Graf wrote:
On 03.10.2011, at 23:40, Scott Wood wrote:
On 10/03/2011 04:10 PM, Stefan Weil wrote:
Am 03.10.2011 22:52, schrieb Scott Wood:
On 10/03/2011 03:43 PM, Stefan Weil wrote:
qemu_cache_utils_init() is only used by ppc / ppc64 tcg targets
to
On 03.10.2011, at 23:51, Scott Wood wrote:
On 10/03/2011 04:43 PM, Alexander Graf wrote:
On 03.10.2011, at 23:40, Scott Wood wrote:
On 10/03/2011 04:10 PM, Stefan Weil wrote:
Am 03.10.2011 22:52, schrieb Scott Wood:
On 10/03/2011 03:43 PM, Stefan Weil wrote:
qemu_cache_utils_init() is
On 04.10.2011, at 00:07, Scott Wood wrote:
On 10/03/2011 05:06 PM, Alexander Graf wrote:
On 03.10.2011, at 23:50, Scott Wood wrote:
On 10/03/2011 04:36 PM, Alexander Graf wrote:
With TCG, we're never executing guest code directly, but always go
through TCG to emulate it. So the only
On 10/03/2011 05:06 PM, Alexander Graf wrote:
On 03.10.2011, at 23:50, Scott Wood wrote:
On 10/03/2011 04:36 PM, Alexander Graf wrote:
With TCG, we're never executing guest code directly, but always go
through TCG to emulate it. So the only case where we actually need to
flush the icache
On 03.10.2011, at 23:50, Scott Wood wrote:
On 10/03/2011 04:36 PM, Alexander Graf wrote:
With TCG, we're never executing guest code directly, but always go
through TCG to emulate it. So the only case where we actually need to
flush the icache is in TCG code generation, never outside, right?
Am 03.10.2011 23:40, schrieb Scott Wood:
On 10/03/2011 04:10 PM, Stefan Weil wrote:
Am 03.10.2011 22:52, schrieb Scott Wood:
On 10/03/2011 03:43 PM, Stefan Weil wrote:
qemu_cache_utils_init() is only used by ppc / ppc64 tcg targets
to initialize the cache before flush_icache_range() is
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