rewritten from scratch a couple of times now and it's safe
to assert that the original Linux heritage was deleted
long ago.
Signed-off-by: Keir Fraser <keir@xensource.com>
offending caller that broke the vcpu cache (writable
pagetable code kept a mapping outstanding until flush,
which could occur on a different vcpu).
Signed-off-by: Keir Fraser <keir@xensource.com>
gmp dev files are installed. If files are missing, Makefile exits with a
message indicating that these tools will not be built, rather than an
error, which prevents Xen from building.
Signed-off-by: Vinnie Scarlata <vincent.r.scarlata@intel.com>
and definition of xc_linux_save(). In particular the argument for
the suspend pointer to function was null in one and int in the other.
On inspection, int seemed to be correct, so I went with this.
I also fixed up a few other cosmetic discrepancies.
Signed-Off-By: Horms <horms@verge.net.au>
The NMI handler is not built unless CONFIG_X86_LOCAL_APIC is defined, and
CONFIG_X86_LOCAL_APIC requires a dom0 build.
Signed-off-by: Ian Campbell <Ian.Campbell@XenSource.com>
EFLAGS that we do not pull in non-zero IOPL, then crash
the domain, and then bug out when dom0 gets vcpu context.
This could otherwise be triggered by a malicious guest.
Signed-off-by: Keir Fraser <keir@xensource.com>
Improve mapping slot search by using a free bitmap.
Removed map_domain_pages (multi-page mapping functionality).
Noone uses it, nor should they use it in future,
Signed-off-by: Keir Fraser <keir@xensource.com>
Register our NMI handler with Xen. Do an iret via the hypervisor
whenever the return CS is > RING0.
Add include/asm-xen/asm-x86_64/nmi.h as a Xen modified copy of
include/asm-x86_64/nmi.h in order that we can implement
get_nmi_reason() in a manner suitable for Xen.
Signed-off-by: Ian Campbell <Ian.Campbell@XenSource.com>
Register our NMI handler with Xen. Use a pseudo-flag in EFLAGS in
indicate that we should return from the NMI via a hypervisor iret.
Signed-off-by: Ian Campbell <Ian.Campbell@XenSource.com>
Handle NMI interrupts and dispatch to dom0 on x86_64.
Renames the switch_to_user hypercall to iret. Extend the semantics to
include returns to guest/kernel if CS indicates ring 1. Retain the old
semantics of returning to guest/user if CS indicates ring3.
Plumb in nmi_op hypercall to generic code.
Signed-off-by: Ian Campbell <Ian.Campbell@XenSource.com>
Handle NMI interrupts and dispatch to dom0 on x86_32.
Renames the switch_vm86 hypercall to iret and implements full iret
semantics instead only what is required by VM86 returns.
Plumb in nmi_op hypercall to generic code.
Signed-off-by: Ian Campbell <Ian.Campbell@XenSource.com>
This patch adds core and generic x86 support code to enable Xen to
pass NMI's to a dedicated NMI callback in DOM0 instead of raising a
VIRQ.
Introduces the nmi_op hypercall to allow DOM0 to (un)register the NMI
handler.
Signed-off-by: Ian Campbell <Ian.Campbell@XenSource.com>
multi-cpu, idle domain created dynamically correspondingly. Only
difference is vcpu0 of idle domain is still built at compilation phase,
due to some code copied from Linux requiring that.
Signed-off-by Kevin Tian <Kevin.tian@intel.com>
This is done by defining ifup/down both to 'false' when they're
missing; then instead of attempting to parse the IP params from
the kernel command line, we get them from 'ip' instead. So this
works even with (for example) ip=dhcp on the kernel command line.
Also made a few minor syntax changes (in particular, replaced "=="
with "=", and ">&foo" with ">foo 2>foo") so this works with more
limited shells.
Signed-off-by: Ben Thomas <bjthomas3@gmail.com>
the right thing or return error if detected. A NULL cmdline, for example,
would currently generate a segfault.
Signed-off-by: Ben Thomas <bjthomas3@gmail.com>
