Make a specific interrupt-window trace, with information about why the
interrupt in question can't be delivered.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
This patch narrow context caching flush range from the
domain-selective to the device-selective, when unmapping a device.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
According to the timer sematic, the timer can be executed at any timer
within [expires, expires_end], however, current implementation only allow
timer to be executed after expires_end, which is not conform to the timer
semantics.
This patch fix the the SPECpower score regression (~5% downgrade)
introduced by changeset 18744 "Change timer implementation to allow
variable 'slop'"
Signed-off-by: Yu Ke <ke.yu@intel.com>
Changeset 982e6fce0e47 added an existence test for UARTs.
Unfortunately, the existence test happens before MMIO UARTs are
ioremapped, therefore it may not be probing where it thinks it's
probing. Rather than moving more code around, I think it's probably
safe to assume the arch code knows what it's doing if it passes in an
MMIO UART.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
When xend is restarted, bootloader settings of all running domains are
lost. The attached patches fixes this by saving bootloader and
bootloader_args to xenstore database.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Blktap devices information isn't shown by xentop currently.
xen-unstable c/s 17813 said "blktap devices have statistics
counters (e.g., rd_req, wr_req, oo_req) prepended by tap_".
In fact, it is as follows.
# ls -l /sys/devices/xen-backend/tap-1-769/statistics/
total 0
-r--r--r-- 1 root root 4096 Dec 3 20:37 oo_req
-r--r--r-- 1 root root 4096 Dec 3 20:37 rd_req
-r--r--r-- 1 root root 4096 Dec 3 20:37 rd_sect
-r--r--r-- 1 root root 4096 Dec 3 20:37 wr_req
-r--r--r-- 1 root root 4096 Dec 3 20:37 wr_sect
The statistics counters haven't had "tap_" because it was removed
by linux-2.6.18-xen c/s 34.
This patch reverts xen-unstable c/s 17813, then we can get the
blktap devices information by using xentop.
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
Attached patch adds support to invalidate all pages associated with
the same domain ID on domain destruction.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
Attached patch propagate HyperTransport settings suggested by IVHD
table to iommu control register(MMIO offset 0018h).
Signed-off-by: Wei Wang <wei.wang2@amd.com>
Reset EventLogInt bit in iommu status register(MMIO offset 2020h) in
event log interrupt handler, to show software has handled the
interrupt. Completion wait interrupt is disabled.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
To pass a page from a guest to hypervisor, gmfn should be used
instead of mfn like grant table and other hypercalls. It's more
consistent. So make use of gmfn instead of mfn for
PHYSDEVOP_pirq_eoi_mfn hypercall.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
This is the xen port of ia64 linux chageset of
b704882e70d87d7f56db5ff17e2253f3fa90e4f3
[IA64] Rationalize kernel mode alignment checking
Itanium processors can handle some misaligned data accesses. They
also provide a mode where all such accesses are forced to trap. The
kernel was schizophrenic about use of this mode:
* Base kernel code ran in permissive mode where the only traps
generated were from those cases that the h/w could not handle.
* Interrupt, syscall and trap code ran in strict mode where all
unaligned accesses caused traps to the 0x5a00 unaligned reference
vector.
Use strict alignment checking throughout the kernel, but make
sure that we continue to let user mode use more relaxed mode
as the default.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
The attached patch fixes a Xen panic when a domain is shutdown before
oprofile is stopped. Without this patch, free_xenoprof_pages() is
called before the domain is destroyed and that, in turn, prevents
oprofile from cleaning up pages shared with guests. Shutting down a
domain without terminating oprofile therefore causes a Xen panic at a
later point in time.
Signed-off-by: Niraj Tolia <niraj.tolia@hp.com>
To simplify the interface for the guest, when a guest uses this new
(sub-)hypercall, PHYSDEVOP_eoi behavior changes to unmask the
corresponding event channel at once, avoiding the eventual need for a
second hypercall from the guest.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
I saw an error message when I shut down a domain. The error
message showed that release of device(vbd/51712) failed. But the
device was tap, was not vbd. I think that a cause of the error message is
because _releaseDevices() calls destroyDevice() by wrong device class.
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
The attached patch relaxes the sanity check on guest configuration
when assigning a acm label to the guest. This patch makes a guest
configuration accept a bootloader parameter. This is common for
paravirtualized guests to boot them by using pygrub.
Signed-off-by: INAKOSHI Hiroya <inakoshi.hiroya@jp.fujitsu.com>
- Need to use EFLG_DF rather than EF_DF
- No need to force EAX destination for many opcodes, as this will be
the default behaviour for DstReg with no ModRM.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Add check on hpet existence which is removed accidentally
in previous changeset (18790). Or else BAD PERIOD error can be seen.
Signed-off-by: Kevin Tian <kevin.tian@intel.com>
- remove a printk line. This printk may be output too many on some
platforms, thus result in hang during dom0 booting.
- add write buffer flush in domain_context_unmap_one()
- when map/unmap context, if context is not flushed, needn't to flush
iotlb
Signed-off-by: Weidong Han <weidong.han@intel.com>
A small missing thing on the original out of sync patch.
No real bug, but it's better to correctly specify the path.
Signed-off-by: Gianluca Guida <gianluca.guida@eu.citrix.com>
Guest walk was currently checking for _PAGE_PSE_PAT flag in
guest_l2e_get_flags(). The problem is that this function only checks
for the first 12 bits of the PDE, while _PAGE_PSE_PAT is actually on bit
12 (that is the 13th bit). This caused _PAGE_PAT bit to never been set on
splintered L1s.
Signed-off-by: Gianluca Guida <gianluca.guida@eu.citrix.com>
BIOS. Current Xen hard coded VGA ROM at 0xC0000 and etherboot ROM
at 0xD0000. This makes the space in [0xC0000 - 0xDFFFF] to be
fragments, which makes it hard to find enough space to hold another
Option ROM.
Signed-off-by: Shan Haitao <haitao.shan@intel.com>
This patch fixes a (hopefully) rare-occurring problem causing memory
corruption in 64 bit guests (and assertion failures in debug build
xen).
On a pagefault, set_l{3,4}e's resync_all was able to give write access
to a page in the guest still not shadowed.
Signed-off-by: Gianluca Guida <gianluca.guida@eu.citrix.com>
Keir Fraser
Isaku Yamahata