__copy_to_user in the swiotlb sync function. We cannot
immediately exit the sync function as there may be tail work
to do (e.g., kunmap_atomic). In fact, doing nothing is the
right thing to do and is sufficient to avoid compiler
warnings about not checking the __copy_to_user return value.
Signed-off-by: Keir Fraser <keir@xensource.com>
mapped for DMA_BIDIRECTIONAL streaming access by certain
low-level drivers. This causes an unnecessary copy to the
host buffer that previously caused a fatal kernel page fault.
Signed-off-by: Keir Fraser <keir@xensource.com>
for whether e820 list is below 1MB: all bootloaders place
it below 1MB so teh check is ineffective and, in any case,
SYSLINUX has the same issue as GRUB (does not pre-initialize
the memory area that e820 function writes to).
Signed-off-by: Keir Fraser <keir@xensource.com>
So that, if OS modify some page tables in real mode and then
return to protect mode, no outdated shadow table be used because
out of sync machanism do not work in real mode.
Signed-off-by: Xiaofeng Ling <xiaofeng.ling@intel.com>
and one for registering the watch on the otherend's path. This means that we
get the fix intended by xen-unstable changeset 8370:39a616126104 (i.e. we only
register the watch once drv->probe() has succeeded), but without breaking block
devices.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
is created but left paused, so it is necessary to destroy the domain afterwards,
whether the test succeeded or failed.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
clts instruction for floating point context save and restore.
clts instruction is already handled in vmx exit handler while
vmx_set_cr0 has not handled it yet.
Signed-off-by: Xiaofeng Ling <xiaofeng.ling@intel.com>
guests when not virtualized properly. Guests can attempt to set the
control registers, etc. (and get #GP and panic) if they are aware of the
new feature and the cpuid says it's available.
Signed-off-by: <jun.nakajima@intel.com>
There is a case where HOSTCC doesn't accept -Wdeclaration-after-statement,
while CC does. It results in a compilation error.
This patch fixes it
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
that it is clear they are fully GPL-compatible and satisfy the free
software definitions in include/linux/module.h.
Signed-off-by: Keir Fraser <keir@xensource.com>
Signed-off-by: Stephen Tweedie <sct@redhat.com>
This reverts part of the previous changeset, which prevented
console=tty0 from doing the obvious thing in a domU guest
(i.e., send output on the virtual console). This is because
the tty index ends up being 1.
I don't think setting the index to other than -1 really
buys us anything anyway. Any other driver that specifies
a name that conflicts with us will almost certainly set their
index to -1, so we cannot avoid conflicts by choosing a
more restrictive (singleton) value.
Signed-off-by: Keir Fraser <keir@xensource.com>
index is identical to the device file index. For us, the tty index is
always zero regardless of the device file index.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
happens when Xend crashes, so retrying once allows it to restart and recover.
If we see Xend crash twice, we give up, but throw a more polite exception than
the BadStatusLine splat that we got previously.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
versions of Xen, and allows one to name a vif when it is created. This is
useful for integration with IP accounting packages, for example.
Closes bug #439.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
abstract base class, which was never going to work. (This is debugging code
only, so I presume that no-one has used it for a long time, but it's doing no
harm hanging around.)
Signed-off-by: Ewan Mellor <ewan@xensource.com>
