I run qemu in single step mode and user-mode. I want to know where i386
flags are stored after a run of one Translation Block.
Dear Richard:
Now I get it, thanks for the help! :-)
Richard Henderson 於 2015/5/24 (週日) 6:21 AM 寫道﹕
On 05/23/2015 05:26 AM, 浩倫 魏 wrote:
> So there are some points that I hope you can help me out:
> 1. Is every guest load/store instruction would be translated to qemu_ld/st IR?
Yes.
Dear Peter:
Now I get it, thanks for the help! :-)
Peter Maydell 於 2015/5/24 (週日) 5:17 AM 寫道﹕
On 23 May 2015 at 13:18, 浩倫 魏 wrote:
> Hi, all:
> I've been trying to understand the process of binary translation inside TCG.
> If I haven't misunderstood, qemu_ld/st are the operations t
On 05/23/2015 05:26 AM, 浩倫 魏 wrote:
So there are some points that I hope you can help me out:
1. Is every guest load/store instruction would be translated to qemu_ld/st IR?
Yes.
2. What about another TCG IR "ld/st"? What kind of guest instructions would
cause TCG generates that IRs and for wh
As reported by Rich the other day. As I don't have a user-land
binary that depends on this, I merely note that it still runs
the linux-user-test sh4 binary. And gdb confirms that the LLSC
bit does get set.
Rich, can you confirm that this is good enough for your musl test?
r~
Richard Henders
Only exposing FPU and LLSC as the only features
supported by the translator.
Signed-off-by: Richard Henderson
---
linux-user/elfload.c | 29 +
1 file changed, 29 insertions(+)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 0ba9706..b71e866 100644
---
Signed-off-by: Richard Henderson
---
linux-user/main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/linux-user/main.c b/linux-user/main.c
index 3f32db0..7e0a439 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3929,6 +3929,8 @@ int main(int argc, char **argv, char **envp)
# el
On 23 May 2015 at 13:18, 浩倫 魏 wrote:
> Hi, all:
> I've been trying to understand the process of binary translation inside TCG.
> If I haven't misunderstood, qemu_ld/st are the operations that will call
> helper function(ld_mmu) to let softmmu translate the GVA->GPA for the guest
> load/store instr
On 23 May 2015 at 14:17, Laurent Vivier wrote:
> When executing a 64bit target chroot on 64bit host,
> the ioctl() command can mismatch.
>
> It seems the previous commit doesn't solve the problem in
> my case:
>
> 9c6bf9c7 linux-user: Fix ioctl cmd type mismatch on 64-bit targets
>
> For e
Public bug reported:
AFAIK, qed is better in performance than qcow2, so why we still use
qcow2 for internal snapshots ? patch is trivial.
** Affects: qemu
Importance: Undecided
Status: New
** Summary changed:
- Used qed instead of qcow2 for "-snapshot" functionality
+ Use qed ins
On 05/23/2015 12:59 AM, Aurelien Jarno wrote:
On 2015-05-21 14:42, Richard Henderson wrote:
Hmm. Seems to be un/under-specified in the PoO. That said,
There is a small sentence in the PoO, in chapter "Program Execution",
section "Sequence of Storage Reference":
It can normally be assumed
On 05/23/2015 01:08 AM, Michael Tokarev wrote:
> That version was a pre-alfa version of kvm support in qemu, is insanely
> outdated, is heavily patched by redhat. I don't even think USB2 was
> supported by that version. Please try on a current version of qemu and
> kernel and reopen if the problem
On 22.05.2015 03:26, Bo Tu wrote:
when creating an image qemu-img enable us specifying the size of the
image using -o size=xx options. But when we specify an invalid size
such as a negtive size then different platform gives different result.
parse_option_size() function in util/qemu-option.c wil
On 20.05.2015 17:19, Gerd Hoffmann wrote:
This adds opengl rendering support to the gtk ui, using egl.
It's off by default for now, use 'qemu -display gtk,gl=on'
to play with this.
Note that gtk got native opengl support with release 3.16.
There most likely will be a separate implementation for
On 20.05.2015 17:19, Gerd Hoffmann wrote:
Add helper functions to initialize OpenGL using egl.
Signed-off-by: Gerd Hoffmann
---
configure| 2 +-
include/ui/egl-helpers.h | 16 +
ui/Makefile.objs | 3 +
ui/egl-helpers.c | 148
On 21.05.2015 08:43, Fam Zheng wrote:
When mirror should complete, the source and target are in sync. But we
call bdrv_swap() only a while later in the main loop bh. If the guest
writes something before that, target will not get the new data.
Block "device IO" before bdrv_drain and unblock it a
On 21.05.2015 08:43, Fam Zheng wrote:
We don't want new requests from guest, so block the operation around the
nested poll.
It also avoids looping forever when iothread is submitting a lot of requests.
Signed-off-by: Fam Zheng
---
block/io.c | 22 --
1 file changed, 20 i
On 21.05.2015 08:43, Fam Zheng wrote:
Signed-off-by: Fam Zheng
---
blockdev.c | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
Reviewed-by: Max Reitz
On 21.05.2015 08:43, Fam Zheng wrote:
Signed-off-by: Fam Zheng
---
blockdev.c | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
Reviewed-by: Max Reitz
(for a richer review-reading experience, see reply to v5)
On 21.05.2015 08:42, Fam Zheng wrote:
Signed-off-by: Fam Zheng
---
blockdev.c | 18 --
1 file changed, 16 insertions(+), 2 deletions(-)
Unchanged from v5, so the same question: Would it suffice to block I/O
only inside external_snapshot_commit()?
diff --git a/blockdev.c
On 21.05.2015 08:42, Fam Zheng wrote:
Signed-off-by: Fam Zheng
---
blockdev.c | 12 +---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index 5eaf77e..7f763d9 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1262,6 +1262,7 @@ typedef struct InternalS
On 21.05.2015 08:42, Fam Zheng wrote:
So that NBD export cannot submit IO during bdrv_drain_all().
Signed-off-by: Fam Zheng
---
nbd.c | 24
1 file changed, 24 insertions(+)
Reviewed-by: Max Reitz
On 21.05.2015 08:42, Fam Zheng wrote:
When a disk is attached to scsi-bus, virtio_scsi_hotplug will take care
of protecting the block device with op blockers. Currently we haven't
enabled block jobs (like what's done in virtio_blk_data_plane_create),
but it is necessary to honor "device IO" op bl
On 21.05.2015 08:42, Fam Zheng wrote:
virtio-blk now listens to op blocker change of the associated block
backend.
Up on setting op blocker on BLOCK_OP_TYPE_DEVICE_IO:
non-dataplane:
1) Set VirtIOBlock.paused
2) In virtio_blk_handle_output, do nothing if VirtIOBlock.paused
datapl
On 22.05.2015 06:54, Fam Zheng wrote:
On Thu, 05/21 15:32, Fam Zheng wrote:
On Thu, 05/21 15:06, Wen Congyang wrote:
On 05/21/2015 02:42 PM, Fam Zheng wrote:
It blocks device IO.
All bdrv_op_block_all/blk_op_block_all callers are taken care of:
- virtio_blk_data_plane_create
- virtio_scsi_ho
On 20.05.2015 08:16, Fam Zheng wrote:
Signed-off-by: Fam Zheng
---
blockdev.c | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/blockdev.c b/blockdev.c
index 923fc90..ae52d27 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1575,6 +1575,7 @@ typedef struct DriveBackupSta
On 20.05.2015 08:16, Fam Zheng wrote:
Signed-off-by: Fam Zheng
---
blockdev.c | 18 --
1 file changed, 16 insertions(+), 2 deletions(-)
Can this be pulled into external_snapshot_commit()? Or might that pose
problems with other operations in the same transaction?
diff --g
On 20.05.2015 08:16, Fam Zheng wrote:
Signed-off-by: Fam Zheng
---
blockdev.c | 12 +---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index 5eaf77e..7f763d9 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1262,6 +1262,7 @@ typedef struct InternalS
On 20.05.2015 08:16, Fam Zheng wrote:
So that NBD export cannot submit IO during bdrv_drain_all().
Signed-off-by: Fam Zheng
---
nbd.c | 24
1 file changed, 24 insertions(+)
Reviewed-by: Max Reitz
On 20.05.2015 08:16, Fam Zheng wrote:
When a disk is attached to scsi-bus, virtio_scsi_hotplug will take care
of protecting the block device with op blockers. Currently we haven't
enabled block jobs (like what's done in virtio_blk_data_plane_create),
but it is necessary to honor "device IO" op bl
On 20.05.2015 08:16, Fam Zheng wrote:
virtio-blk now listens to op blocker change of the associated block
backend.
Up on setting op blocker on BLOCK_OP_TYPE_DEVICE_IO:
non-dataplane:
1) Set VirtIOBlock.paused
2) In virtio_blk_handle_output, do nothing if VirtIOBlock.paused
datapl
On 20.05.2015 08:16, Fam Zheng wrote:
It blocks device IO.
All bdrv_op_block_all/blk_op_block_all callers are taken care of:
- virtio_blk_data_plane_create
- virtio_scsi_hotplug
Device creation, unblock it.
- bdrv_set_backing_hd
Backing hd is not used by device, so blocking is OK.
- b
On 20.05.2015 08:16, Fam Zheng wrote:
It blocks device IO.
All bdrv_op_block_all/blk_op_block_all callers are taken care of:
- virtio_blk_data_plane_create
- virtio_scsi_hotplug
Device creation, unblock it.
- bdrv_set_backing_hd
Backing hd is not used by device, so blocking is OK.
- b
Hi, all:
I've been trying to understand the process of binary translation inside TCG.If
I haven't misunderstood, qemu_ld/st are the operations that will call helper
function(ld_mmu) to let softmmu translate the GVA->GPA for the guest load/store
instructions.
So there are some points that I hope
Hi, all:
I've been trying to understand the process of binary translation inside TCG.If
I haven't misunderstood, qemu_ld/st are the operations that will call helper
function(ld_mmu) to let softmmu translate the GVA->GPA for the guest load/store
instructions.
So there are some points that I hope
When executing a 64bit target chroot on 64bit host,
the ioctl() command can mismatch.
It seems the previous commit doesn't solve the problem in
my case:
9c6bf9c7 linux-user: Fix ioctl cmd type mismatch on 64-bit targets
For example, a ppc64 chroot on an x86_64 host:
bash-4.3# ls
Unsuppo
Hi Pavel,
No problem.
Best regards,
S.P.
On Friday, May 22, 2015, Pavel Fedin wrote:
> Hello!
>
> > Please find some more comments inline.
>
> Since there are notes about code style, i would add one more thing.
> structures of v3
> implementation keep old names (like GICState), and i would
On 23 May 2015 at 09:22, Aurelien Jarno wrote:
> On 2015-05-22 00:00, Alexander Graf wrote:
>> Looks like you're finding lots of fun corner case bugs in the
>> emulation. Have you or Richard considered to implement s390x
>> support in Risu yet? Aarch64 emulation accuracy is remarkable
>> since its
On Friday, May 22, 2015, Pavel Fedin wrote:
> Hello!
>
> > The GIC-500 provides registers for managing interrupt sources, interrupt
> behavior, and interrupt
> > routing to one or more cores. It supports:
> > • Multiprocessor environments with up to 128 cores.
> > • Up to 32 affinity-level 1 clu
On 2015-05-22 00:00, Alexander Graf wrote:
> Looks like you're finding lots of fun corner case bugs in the emulation. Have
> you or Richard considered to implement s390x support in Risu yet? Aarch64
> emulation accuracy is remarkable since its introduction.
I have just learned about Risu, so no
That version was a pre-alfa version of kvm support in qemu, is insanely
outdated, is heavily patched by redhat. I don't even think USB2 was
supported by that version. Please try on a current version of qemu and
kernel and reopen if the problem persist there.
** Changed in: qemu
Status: New
On 2015-05-21 14:42, Richard Henderson wrote:
> On 05/21/2015 02:32 PM, Aurelien Jarno wrote:
> > When consecutive memory locations are on page boundary a page fault
> > might occur when using the LOAD MULTIPLE instruction. In that case real
> > hardware doesn't load any register.
> >
> > This is
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