After a fatal trap, we want to debug whatever caused the trap rather than the trap
handler. Fix things up accordingly.
Also add some documentation while I'm here.
Signed-off-by: sos22@cl.cam.ac.uk.
Change do_set_callbacks hypercall for x86/64 to not take any selector
values, but to take a syscall_entry point.
Signed-off-by: keir.fraser@cl.cam.ac.uk
Fix IDT handling. x86/64 doesn't need an IDT per CPU. On x86/32 I have
put the IDT copying back to where it was, very late in the boot process.
Otherwise I miss late modifications to the master IDT. This fixes
problems I was seeing with serial line interrupts getting msidirected.
Signed-off-by: keir.fraser@cl.cam.ac.uk
p2m and m2p tables are now 4 bytes per entry always, even on x86/64.
Fixed mapping of m2p table into kernel space on x86/64.
Signed-off-by: keir.fraser@cl.cam.ac.uk
More x86_64 stuff. Added hypercalls to register a user-space pagetable,
modify FS/GS base addresses, and switch to user mode. User mode switches
back to kernel mode automatically on executing SYSCALL instruction.
Still todo: 1. getdomaininfo needs to include pagetable_user
2. get writable and shadow pagetables working
3. testing
Signed-off-by: keir.fraser@cl.cam.ac.uk
Subject: [Xen-devel] VNET - full update
Allows vnets to compile and run under 2.6.10/xen-testing.
PATCH: vnet-cleanup.patch
Signed off by: bgb@nt-nv.com
Signed-off-by: ian@xensource.com
Merge freefall.cl.cam.ac.uk:/auto/groups/xeno-xenod/BK/xen-unstable.bk
into freefall.cl.cam.ac.uk:/auto/groups/xeno/users/iap10/xeno-clone/xen-unstable.bk
Loads more x86_64 work. entry.S is now done so we reflect exceptions
and interrupts to the guest. The only missing parts are new hypercalls
to set FS_BASE, GS_BASE_KERN, GS_BASE_USER. Also the concept of two
L4 pagetable bases -- one for user, one for kernel.
Signed-off-by: keir.fraser@cl.cam.ac.uk
More x86_64 work. do_mmu_update and update_va_mapping are now done.
Still todo: 1. exception/interrupt callbacks to guest OS
2. OS ring 3 vs. application ring 3
3. writable pagetables and shadow pagetables
Signed-off-by: keir.fraser@cl.cam.ac.uk
Subject: [Xen-devel] [PATCH] Fix initrd support for Linux 2.4/2.6
The following patch sets the default root device to be the null device.
This is the behavior Linux is launched with no root device specified in
the command line and without a device provided by the boot loader.
Previously, the default root device was set to be /dev/ram0. This broke
initrd support. This change was made in 2.6 to because of a bug
reported on September 14th with dynamic ipconfig. I've recreated his
problem and looked through the code and the source of the problem was
that his kernel command line was incorrect. He was missing the BOOTP
field in the config line requiring that there be an actual root device.
This worked with 2.4 but only because 2.4 was also broken. His patch
just introduced that bug into 2.6.
I've tested this against the 2.6 and 2.4 trees in a recent copy of
xen-unstable. I've tested initrd support and ipconfig support
(including dynamic ip support). They both now work as expected.
If anyone needs an initrd for testing let me know.
Regards,
--
Anthony Liguori
Linux Technology Center (LTC) - IBM Austin
E-mail: aliguori@us.ibm.com
Phone: (512) 838-1208
Signed-off-by: Anthony Liguori
Signed-off-by: ian@xensource.com
Subject: [PATCH] mmio-decode-movz.patch
- Handle the movz instruction in the decoder. This was necessary to get
X working.
Signed-off-by: Chengyuan Li <chengyuan.li@intel.com>
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: ian@xensource.com
Subject: [PATCH] pit-in-hv.patch
- Use ac_timer for PIT interrupt injection (more accurate time keeping)
- Accelerate some critical PIT I/O operations in the hypervisor
(saves 15us per op). Cuts down guest timer interrupt handler execution time
by a third.
- If the domain is scheduled out, make sure that interrupts are not lost
- Add a generic framework for device I/O interception
Signed-off-by: Edwin Zhai <edwin.zhai@intel.com>
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: ian@xensource.com
Fix the synchronization issues between xend and the device model at
startup time.
Initialize the shared page in the hypervisor. Otherwise, the hypervisor
might try to inject spurious interrupts into the guest due to
uninitialized data.
Signed-off-by: Xin B Li <xin.b.li@intel.com>
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: ian@xensource.com
Merge freefall.cl.cam.ac.uk:/auto/groups/xeno-xenod/BK/xen-unstable.bk
into freefall.cl.cam.ac.uk:/auto/groups/xeno/users/iap10/xeno-clone/xen-unstable.bk
Initial checkin of blktap user-land tools. These are fairly experimental,
but a few people have asked to use them. This checkin also includes
Christian's gnbd client library code.
Signed-off-by: andrew.warfield@cl.cam.ac.uk
