This disables superpage restore support, but should gain us acceptable
performance when restoring a domain using a pv_ops dom0 kernel. This
is because single-page allocations will be batched rather than issued
singly.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
We should not dump the mcinfo in mce handler, instead, we should do
that in mc_panic for fatal error or softirq for other errors.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Acked-By: Christoph Egger <Christoph.Egger@amd.com>
Firstly, mc_panic should only mc_panic in one CPU to avoid printk
output be mixed.
Secondly, call urgent handler in MCE panic to get error code specific
hander be involved.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Add intel_mce_type check according to Intel's SDM.
Reduce intel_memerr_dhandler()'s indent to make code easily read. And
add a page_off action when we offline the page, so that dom0 can knows
about the action taken by xen hypervisor.
Add a default delay mce handler, which will crash if unknow SRAR error
or fatal error, otherwise, system continue.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
urgent handler
Originally mce_action is called for delayed hander. Change it to be
used for both delayed handler and urgent handler.Wrap it with
mce_delayed_action for delay handler.
Change the return value to be more clearly.
Change the mca handler from mca_code to a function to be more
flexible. And change the interface to mce_handler to be mca_binfo to
pass more information.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Cleanup intel_mcheck_init, also change the MCA capability check. We
will always use BSP's MCA capability as global value. If there are
some difference between BSP/AP, we will print warning.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Seperate logic for MCE handling, Intel MCA, MCE, CMCI handler, to make
it more clean. No logic changes in this patch.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
A new command is added. User can set the target CPU map, since the
CMCI can be triggered on some specific CPUs. Please be noticed that
the xenctl_cpumap structure is moved from domctl.h to xen.h.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Firstly and most importantly, the maxium MCA banks are hard-coded as
MAX_NR_BANKS, which is 30. This is not architecture correct. This
patch removes this definition, replacig the cpu_banks_t with
mca_banks, and provide some basic function, like
set/clear/test/alloc/free for mcabanks_t.
Secondly, remove the broadcast_check code to intel specific, since
only Intel platform support broadcast now.
Thirdly, the X86_FEATURE_MCA check and CR4_MCE enable is done in every
vendor-specifc callback, that's redundant, move it to
mcheck_init. Also, we should enable CR4_MCE only in the end of the
mcheck_init, to close the small window between CR4_enable and the mca
setup.
And we also move vmce specific code to vmce.c as vmce_init, to make
code clean.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Acked-By: Christoph Egger <Christoph.Egger@amd.com>
Tapdisk control in userspace, a replacement for the original blktap2
control stack, which had to pass a kernel space interface based on
sysfs nodes.
All tapdisk processes listen for commands on a unix stream socket. The
control library supports scanning the socket namespace for running
tapdisks, VBD minors allocated, associated images and state inquiry.
Control operations include allocating/releasing devices, spawning
tapdisks, opening/closing images, attaching disk images to
devices. disk pause/resume operations and runtime switching of disk
images.
Signed-off-by: Jake Wires <jake.wires@citrix.com>
Signed-off-by: Daniel Stodden <daniel.stodden@citrix.com>
Stop coercing drivers/disktype code into the tool stack. Make both
blktapctrl and tap-ctl transfer type/path pairs as "<type>:<path>"
strings. Remove the message.disktype integer altogether.
Signed-off-by: Daniel Stodden <daniel.stodden@citrix.com>
Signed-off-by: Jake Wires <jake.wires@citrix.com>
Implement xen_platform_pci support in xl/libxl to allow users to
disable the xen platform pci device from the VM config file.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Now the init script is called xencommons and, as the name suggests, it
is a common script between xl and xend because it is used to start
xenconsoled, xenstored and xenbackendd and the initialization of these
three daemons has been removed from xend. The global
xen_toolstack=xl/xend variable has been removed. Regarding the
network setup, I made the vif scripts follow the same pattern as the
other scripts in xen-backend: a new script called vif-setup is
executed unconditionally. vif-setup is going to do the right thing
depending on the value of the environmental variable "script" (same
technique used before), defaulting to vif-bridge. In the common
scenario the toolstack doesn't need to set the variable "script"
because vif-bridge is going to be called anyway. There is no global
network script to setup the network bridges with xl, so if you are
using xl without xend, you need to manually configure the bridges
using your distro network setup, or, if you are lazy, you can just add
something like:
/etc/xen/scripts/network-bridge start
to your rc.local.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Several changes to get the extended MCA information:
a) Use the x86_mcinfo_reserve in mcinfo_extended to reserve buffer
from
mc_info, instead of using the stack
b) For intel's extended MSR, we don't need write them one
by one as the MSR are continous
c) We don't need enum mca_extinfo, since we can consider
the extended MSR as either per bank, or global. Currently
we add a hook in global data collection, and didn't call
register intel_get_extended_msrs as callback. Later that
hook can be replaced by cleaner way
Signed-off-by: Jiang, Yunhong <yunhong.jiang@inte.com>
xen-hptool cannot be built on ia64, because xen-hptool depends on
xc_offline_page.c and xc_offline_page.c does not support ia64.
This patch disables it on ia64.
Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
Keir Fraser