Right now, the memory for the 1:1 physical mode page tables comes from the
VMX domain's memory. With this change, when the user asks for a domain with
M Megabytes of memory, we actually allocate M+N megabytes in xend, where
N is the memory for the page table pages.
This simplifies the code in the device models that maps guest memory (we
now map all of it) and the E820 map can also give the full M megabytes to
the guest.
Signed-off-by: Xin B Li <xin.b.li@intel.com>
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: ian.pratt@cl.cam.ac.uk
Add an optional parameter (vcpus) to the xc_linux_build function replacing
the getenv() previously used and removing the requirement of using maxcpus
kernel parameter to limit the number of virtual cpus a guest uses. The value
can now be controlled in the domain configuration files.
The default value of 1 is set in XenDomainInfo.py but is overridden by
parsing the config value.
Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
Implementation of a new scheduler. Based on BVT (Borrowed Virtual Time) but trying to give more fair allocation of CPU for diverse environments (CPU-bound domains running against I/O bound ones). For that reason I called it Fair BVT (or FBVT for short). The BVT implementation gave the basic implementation. This changeset contains also the interface to control the scheduler. Unfortunatelly the contex switch allowance cannot be changed yet (a bug). The parameters introduced in the scheduler are likely to change in near future (after running tests).
