This is a simple patch to change the type of old_env from jmp_buf
to sigjmp_buf. old_env is used by sigsetjmp and as such should be
a sigjmp_buf.
This fixes a stack_chk fail in a OSX 32bit build. Since at least on
OSX sigjmp_buf is four bytes larger then a jmpbuf, resulting in an
overflow in sig
On 8 November 2014 03:51, Willem Pinckaers wrote:
> This is a simple patch to change the type of old_env from jmp_buf
> to sigjmp_buf. old_env is used by sigsetjmp and as such should be
> a sigjmp_buf.
>
> This fixes a stack_chk fail in a OSX 32bit build. Since at least on
> OSX sigjmp_buf is fou
the problem is this commit:
http://git.qemu.org/?p=qemu.git;a=commit;h=b791c3b38c7969cb9f4acda8229e19fd865a1c08
it's easy to reproduce -- plug in a USB flash drive and try to pass it
through
on the host:
$ lsusb
Bus 003 Device 004: ID 1307:0163 Transcend Information, Inc. 256MB/512MB/1GB
Flash D
Am 06.11.2014 um 20:43 schrieb Tom Musta:
> When computing the upper address of a program segment, do not subtract the
> offset from the virtual address; instead compute the sum of the virtual
> address
> and the memory size.
Note that this reads a bit weird as both old and new code are adding,
n
This patch implements AioContext wide IO submission as batch, and
the idea behind is very simple:
- linux native aio(io_submit) supports to enqueue read/write requests
to different files
- in one AioContext, I/O requests from VM can be submitted to different
backen
This patch allocates io queue dynamically so that we
can support aio_context wide io queue in the following
patch.
Signed-off-by: Ming Lei
---
block/linux-aio.c | 66 +
1 file changed, 41 insertions(+), 25 deletions(-)
diff --git a/block/lin
This patch allocates 'struct qemu_laio_state' in aio attach,
and frees it in aio detach, so that in the following patch
we can share one same instance of the structure among multiple
linux-aio backend in same AioContext.
Signed-off-by: Ming Lei
---
block/linux-aio.c | 80 ++
Now lifetime of 'completion_bh', io queue and io context is same,
so move their allocation into laio_state_alloc() and their
releasing into laio_state_free().
Signed-off-by: Ming Lei
---
block/linux-aio.c | 26 --
1 file changed, 12 insertions(+), 14 deletions(-)
diff
So that it can be distinguished from the 'ctx' in qemu_laio_state.
Signed-off-by: Ming Lei
---
block/linux-aio.c |8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/block/linux-aio.c b/block/linux-aio.c
index b9db28e..cf8691e 100644
--- a/block/linux-aio.c
+++ b/block/
This patch supports IO submission as batch in AioContext wide
by sharing 'struct qemu_laio_state' instance among all linux-aio
backend in same AioContext.
Signed-off-by: Ming Lei
---
block/linux-aio.c | 36 ++--
1 file changed, 34 insertions(+), 2 deletions(-)
This patch introduces parameter of 'BlockDriverState' to
laio_attach_aio_context() and its pair, so that it will be
easier to support IO submission as batch in AioContext wide.
Signed-off-by: Ming Lei
---
block/linux-aio.c |6 --
block/raw-aio.h |6 --
block/raw-posix.c |4
This patch allocates events array of 'struct qemu_laio_state'
dynamically so that in the following patch we can allocate
resource elasticly in case of AioContext wide IO submission
as batch.
Signed-off-by: Ming Lei
---
block/linux-aio.c |4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
This patch introduces aio_attach_aio_bs() and its pair
for supporting IO submission as batch in AioContext wide,
and one typical use case is multi-lun SCSI.
aio_attach_aio_bs() will attach one 'bs' which is capable
of IO submission as batch, then all I/O submission in
this AioContext will borrow t
This patch introduces laio_alloc_resource() for allocating
resources for linux aio, then in the following patchs we
can allocate IO resources just in demand.
Signed-off-by: Ming Lei
---
block/linux-aio.c | 55 ++---
1 file changed, 35 insertions(
These two APIs are introduced for using AioContext wide
IO submission as batch.
Signed-off-by: Ming Lei
---
block.c | 16
include/block/block.h |3 +++
2 files changed, 19 insertions(+)
diff --git a/block.c b/block.c
index dacd881..0200af0 100644
--- a/block
First event notifier and qemu BH is associated with aio
context, so it should be reallocated for making these
handlers running in the current attached aio context.
Secondly when new 'bs' is attached, we need to allocate
more io resources for performance purpose.
This patch only does the reallocat
Because we will support AioContext wide IO submission as batch,
so IO resources should be allocated according to how many there
are backends in the same AioContext.
Signed-off-by: Ming Lei
---
block/linux-aio.c | 38 +++---
1 file changed, 31 insertions(+), 7 de
Replace previous usage with AioContext Wide approach.
Signed-off-by: Ming Lei
---
hw/scsi/virtio-scsi-dataplane.c |8
hw/scsi/virtio-scsi.c |2 --
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/hw/scsi/virtio-scsi-dataplane.c b/hw/scsi/virtio-scsi-datap
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