Better locking strategy in serial rx interrupt handler and getc. Release
the spinlock after each loop iteration to prevent starvation of other
cpus and of interrupt handling. Also neatly folds byte_matches() into
serial_getc().
Signed-off-by: Keir Fraser <keir@xensource.com>
Fix Xen idle loop to enter/exit tickless mode in same way as s390,
which interfaces properly with the RCU subsystem.
This includes a patch that fixes a race in the generic RCU code: it
was created by IBM for s390, and is being pushed upstream by them.
Signed-off-by: Keir Fraser <keir@xensource.com>
Bit-scanning function take offset/size as an int, not a long, and
return an int. This allows some small optimisation in code produced
for x86/64.
Signed-off-by: Keir Fraser <keir@xensource.com>
Tidy up and fix the bit-scanning operations. In particular,
find_{first,next}_[zero_]bit(addr, max) may return any value >= max
if no suitable bit is found. This is now also the case for first_cpu()
and next_cpu() (unlike Linux!). I don't believe that any callers
care -- they always check for >= NR_CPUS, and I fixed any_online_cpu()
separately. This reduces code size and will improve performance.
Signed-off-by: Keir Fraser <keir@xensource.com>
[PATCH] [PATCH] VMX world switch does not handle all cases
The latest world switch modification does not handle all cases. Specifically,
when a partition enables CR0.PG|CR0.PE and performs a world switch at the
the same time. The patch below handles this case.
Signed-Off-By: Leendert van Doorn <leendert@watson.ibm.com>
Assembly code cleanups. gcc doesn't need very many hints to get the
operand size and register names correct for both x86/32 and x86/64.
Signed-off-by: Keir Fraser <keir@xensource.com>
This patch should make x86-64 XenLinux more stable. Please apply.
# Cleanups and improving stability by avoiding complex fixup at
critical section.
# Also fix error_entry with error set.
# Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
# Signed-off-by: Li B Xin <li.b.xin@intel.com>
I think the other was dropped (i.e. not applied in BK):
pfn_pte_ma.patch. Please apply it as well.
[PATCH] [PATCH] ioemu: enable Cirrus VGA emulation
At some point the Cirrus VGA driver was commented out. Probably
for debugging. The patch below adds it back in. It works just fine.
Signed-Off-By: Leendert van Doorn <leendert@watson.ibm.com>
[PATCH] vmx-worldswitch-1-to-1.patch
Fix VMX world switch to use 1:1 page tables when the guest has paging
disabled. Also do a printk instead of VMX_DBG_LOG() anytime we crash
a domain.
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
[PATCH] vmx-io.patch
Fix some of the race conditions that show up when the device models are
running on one CPU and the VMX domain is running on another on a SMP
system.
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Patch ipv4 netfilter code to avoid checksumming CHECKUM_UNNCECESSARY
packets. On Xen the check could fail, as packets from domU have a blank
checksum field.
Signed-off-by: Keir Fraser <keir@xensource.com>
xm's pincpu has a problem handling the cpu parameter if the cpu number
is more than one digit. This patch fixes it.
Signed-off-by: Nguyen Anh Quynh <aquynh@gmail.com>
[PATCH] [PATCH] (missing) More accurate address decoding for
This patch works a lot better when you have all the modified files.
Signed-Off-By: Leendert van Doorn <leendert@watson.ibm.com>
[PATCH] [PATCH] More accurate address decoding for VMX string
This patch includes two patches. The major patch is the improved address
decoding for ins/outs instructions. In the previous version, segment
overrides were ignored which caused a lot of problems for parts of the
ROMBIOS code where they are used heavily. Address decoding has been
made slightly easier now that GUEST_LINEAR_ADDRESS is documented. We
still need to work around a bug in the current stepping and make sure
that in protected mode the selector is not null.
The second patch removes the ASSERT(cr3). cr3==0 is a perfectly legal
value and Xen should not crash when its read.
Signed-Off-By: Leendert van Doorn <leendert@watson.ibm.com>
[PATCH] [PATCH] Missing start_vmx call
Start_vmx was removed by accident. This patch puts it back. start_vmx
is used to initialize the VMX subsystem, without it VMX operations result
in bad opcode traps and crash Xen.
Signed-Off-By: Leendert van Doorn <leendert@watson.ibm.com>
- pygrub/README provides information on packages needed to compile pygrub
- support reiserfs {2,3} filesystem
- dynamically build modules based on which filesystem libraries the
system has (proposed by Jeremy)
- pump up pygrub to version 0.2
Signed-off-by: Jeremy Katz <katzj@redhat.com>
Signed-off-by: Nguyen Anh Quynh <aquynh@gmail.com>
