When assign multiple devices to guest which uses PIC, ISA IRQ alias
may occur. This patch splits ISA IRQ and GSI eoi function. In ISA IRQ
eoi function, searches all assigned mirqs and does eoi for the
corresponding mirqs which match the eoi ISA IRQ. Therefore fix ISA IRQ
alias issue.
Signed-off-by: Weidong Han <weidong.han@intel.com>
Make bind_virq() return the port bound to the irq, which is useful
e.g. for masking/unmasking it.
Signed-off-by: Samuel Thibault <samuel.thibault@citrix.com>
Fix x86 arch_switch_thread by making it pure assembly.
There were missing general register clobbers for x86_64, and BP should
theorically be clobbered too, but gcc does not believe that, so the
only simple safe solution is to use pure assembly.
Signed-off-by: Samuel Thibault <samuel.thibault@citrix.com>
So as to make backtracing tools happy, correctly close x86 stacks for
new threads as well as on callback in the x86_32 case since there is
no unwind marker.
Signed-off-by: Samuel Thibault <samuel.thibault@citrix.com>
This fixes the initial stack alignment for x86, which is required for
current to return a fine NULL instead of a random value or possibly
crash during initialization.
Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
Signed-off-by: Samuel Thibault <samuel.thibault@citrix.com>
Emulate the trapping on I/O port accesses when emulating IN/OUT.
Also allow 8-byte breakpoints on x86-64 (and on i686 if the hardware
supports them), and tighten the condition for loading debug registers
during context switch.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Keir Fraser <keir.fraser@eu.citrix.com>
Inject single step trap after emulating instructions if guest's
EFLAGS.TF is set.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Keir Fraser <keir.fraser@eu.citrix.com>
requests to be passed from the frontend to the backend.
Signed-off-by: David Edmondson <dme@sun.com>
Signed-off-by: Keir Fraser <keir.fraser@eu.citrix.com>
This involves either determining that the entry will not be
read/written while the update takes place, or atomically making the
entry 'present', or doing the entire write atomically, as appropriate.
This issue raised, and original patch provided, by Jan Beulich.
Signed-off-by: Keir Fraser <keir.fraser@eu.citrix.com>
register. Some CrashMe test apaprently does this and we don't want
that to crash the domain it runs in.
From: Dexuan Cui <dexuan.cui@intel.com>
Signed-off-by: Keir Fraser <keir.fraser@eu.citrix.com>
Pass struct domain* to domain_opt_feature().
This patch is preparation patch for HVM domain save/restore opt_feature.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Get rid of assertions about return value of get_instruction_length()
-- instead test in __update_guest_eip() and crash the domain.
Cache value of 'current' in svm_do_hlt().
The mismanagement of the interrupt shadow was found by Christoph
Egger of AMD.
Signed-off-by: Keir Fraser <keir@xensource.com>
This patch fixes a bug in the RTC code which appears to originate in
having written the emuated device following an incorrect
specification. VMware has (or had, at least, at the time we were still
testing on both VMWare and Xen) the same issue. In the current code,
when RTC_SET is set, RTC_UIE is cleared. This does not match the
behavior of real hardware, where the case is simply that no update
ended interrupts are sent as long as RTC_SET is set, but the UE ints
will resume as soon as RTC_SET is cleared and the clock update is
done. This little patch fixes this issue. In practicality, this means
OS/2 can now set the time without having the clock stop. I don't know
if any other guests have been affected by this issue.
From: Trolle Selander <trolle.selander@gmail.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
This patch re-implements the (x86) hypervisor dirty page log with a
simple four-level radix tree whose nodes are all single pages, thus
making migration require only order-0 pages (where before it required
at least an order-5 page).
Unlike the p2m radix tree implementation, the interior nodes of this
tree are NOT page table nodes. I chose a lazy-allocation and -mapping
approach because most pages are not marked dirty while dirty-logging is
enabled. There are doubtless situations (the 'stream' benchmark, for
example) where a more complex p2m-like approach is faster, but I'm not
sure they're worth the effort.
Signed-off-by: Dave Lively <dlively@virtualiron.com>
__copy_{to,from}_user_ll() for gcc 3.4 (asm output constraints all
need to be '=&').
Based on a patch by Jan Beulich.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
- Use getopt() to get rid of argp dependency which does not exist
on Solaris and *BSD. Done by Tariq Magdon-Ismail.
- Minor modifications by me (Christoph) to make it also work on *BSD.
- Tested on Linux by me (Christoph). No functional change on Linux.
- Tariq ok'd BSD modifications for Solaris
- Tariq ok'd submission by me :)
Signed-off-by: Tariq Magdon-Ismail <tariqmi@sun.com>
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Keir Fraser
Alex Williamson