Konrad Rzeszutek Wilk 6efa20e49b xen: Support 64-bit PV guest receiving NMIs ... This is based on a patch that Zhenzhong Duan had sent - which was missing some of the remaining pieces. The kernel has the logic to handle Xen-type-exceptions using the paravirt interface in the assembler code (see PARAVIRT_ADJUST_EXCEPTION_FRAME - pv_irq_ops.adjust_exception_frame and and INTERRUPT_RETURN - pv_cpu_ops.iret). That means the nmi handler (and other exception handlers) use the hypervisor iret. The other changes that would be neccessary for this would be to translate the NMI_VECTOR to one of the entries on the ipi_vector and make xen_send_IPI_mask_allbutself use different events. Fortunately for us commit 1db01b4903 (xen: Clean up apic ipi interface) implemented this and we piggyback on the cleanup such that the apic IPI interface will pass the right vector value for NMI. With this patch we can trigger NMIs within a PV guest (only tested x86_64). For this to work with normal PV guests (not initial domain) we need the domain to be able to use the APIC ops - they are already implemented to use the Xen event channels. For that to be turned on in a PV domU we need to remove the masking of X86_FEATURE_APIC. Incidentally that means kgdb will also now work within a PV guest without using the 'nokgdbroundup' workaround. Note that the 32-bit version is different and this patch does not enable that. CC: Lisa Nguyen <lisa@xenapiadmin.com> CC: Ben Guthro <benjamin.guthro@citrix.com> CC: Zhenzhong Duan <zhenzhong.duan@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [v1: Fixed up per David Vrabel comments] Reviewed-by: Ben Guthro <benjamin.guthro@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>		2013-08-09 10:55:47 -04:00
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acpi	Revert "ACPI / video / i915: No ACPI backlight if firmware expects Windows 8"	2013-07-26 14:59:20 +02:00
asm-generic	Merge branch 'cpuinit-delete' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2013-07-07 11:01:19 -07:00
clocksource
crypto
drm	drm: fix 64 bit drm fixed point helpers	2013-07-30 17:24:13 -04:00
dt-bindings	Pin control fixes for the v3.11 series:	2013-07-28 18:19:27 -07:00
keys
kvm	ARM: KVM: Allow host virt timer irq to be different from guest timer virt irq	2013-06-26 10:50:02 -07:00
linux	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-08-03 15:00:23 -07:00
math-emu
media	[media] exynos4-is: Correct colorspace handling at FIMC-LITE	2013-06-28 15:33:27 -03:00
memory
misc
net	net: rename CONFIG_NET_LL_RX_POLL to CONFIG_NET_RX_BUSY_POLL	2013-08-01 15:11:17 -07:00
pcmcia
ras
rdma	Merge branches 'af_ib', 'cxgb4', 'misc', 'mlx5', 'ocrdma', 'qib' and 'srp' into for-next	2013-07-08 11:22:11 -07:00
rxrpc
scsi	[SCSI] libiscsi: Added new boot entries in the session sysfs	2013-06-26 18:04:11 -07:00
sound	ASoC: More updates for v3.11	2013-06-28 13:36:22 +02:00
target	target: make queue_tm_rsp() return void	2013-07-07 18:36:53 -07:00
trace	This contains fixes, optimizations and some clean ups	2013-07-22 19:07:24 -07:00
uapi	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem	2013-08-01 14:30:59 -04:00
video	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2013-07-09 16:04:31 -07:00
xen	xen: Support 64-bit PV guest receiving NMIs	2013-08-09 10:55:47 -04:00
Kbuild