linux/arch/x86/xen
Stefano Stabellini 409771d258 x86: Use xen_vcpuop_clockevent, xen_clocksource and xen wallclock.
Use xen_vcpuop_clockevent instead of hpet and APIC timers as main
clockevent device on all vcpus, use the xen wallclock time as wallclock
instead of rtc and use xen_clocksource as clocksource.
The pv clock algorithm needs to work correctly for the xen_clocksource
and xen wallclock to be usable, only modern Xen versions offer a
reliable pv clock in HVM guests (XENFEAT_hvm_safe_pvclock).

Using the hpet as clocksource means a VMEXIT every time we read/write to
the hpet mmio addresses, pvclock give us a better rating without
VMEXITs. Same goes for the xen wallclock and xen_vcpuop_clockevent

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Don Dutile <ddutile@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2010-07-26 23:13:25 -07:00
..
debugfs.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
debugfs.h xen: add debugfs support 2008-08-21 13:52:58 +02:00
enlighten.c x86: Use xen_vcpuop_clockevent, xen_clocksource and xen wallclock. 2010-07-26 23:13:25 -07:00
grant-table.c xen: make grant table arch portable 2008-04-24 23:57:32 +02:00
irq.c x86: Move irq_init to x86_init_ops 2009-08-31 09:35:45 +02:00
Kconfig x86: remove the Voyager 32-bit subarch 2009-02-23 00:54:01 +01:00
Makefile xen: make -fstack-protector work under Xen 2009-09-09 16:37:39 -07:00
mmu.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mmu.h x86: Move paravirt pagetable_setup to x86_init_ops 2009-08-31 09:35:45 +02:00
multicalls.c x86, xen: do multicall callbacks with interrupts disabled 2009-02-16 08:56:41 +01:00
multicalls.h Merge commit 'v2.6.29-rc4' into core/percpu 2009-02-09 14:58:11 +01:00
setup.c xen: reserve Xen start_info rather than e820 reserving 2009-05-08 10:51:03 +02:00
smp.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
spinlock.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
suspend.c x86: Use xen_vcpuop_clockevent, xen_clocksource and xen wallclock. 2010-07-26 23:13:25 -07:00
time.c x86: Use xen_vcpuop_clockevent, xen_clocksource and xen wallclock. 2010-07-26 23:13:25 -07:00
vdso.h i386: move xen 2007-10-11 11:16:51 +02:00
xen-asm.h xen: make direct versions of irq_enable/disable/save/restore to common code 2009-02-04 16:59:04 -08:00
xen-asm.S x86: style cleanups for xen assemblies 2009-02-05 20:25:41 +01:00
xen-asm_32.S percpu: remove per_cpu__ prefix. 2009-10-29 22:34:15 +09:00
xen-asm_64.S xen: use iret for return from 64b kernel to 32b usermode 2009-12-03 11:14:54 -08:00
xen-head.S x86: use _types.h headers in asm where available 2009-02-13 11:35:01 -08:00
xen-ops.h x86: Use xen_vcpuop_clockevent, xen_clocksource and xen wallclock. 2010-07-26 23:13:25 -07:00