kernel.git/arch/x86/kernel/kvmclock.c, branch linux-2.6.30.y

KVM guest: fix bogus wallclock physical address calculation

2009-10-05T15:27:57Z

(cherry picked from commit a20316d2aa41a8f4fd171648bad8f044f6060826) The use of __pa() to calculate the address of a C-visible symbol is wrong, and can lead to unpredictable results. See arch/x86/include/asm/page.h for details. It should be replaced with __pa_symbol(), that does the correct math here, by taking relocations into account. This ensures the correct wallclock data structure physical address is passed to the hypervisor. Signed-off-by: Glauber Costa Signed-off-by: Avi Kivity Signed-off-by: Greg Kroah-Hartman

clocksource: pass clocksource to read() callback

2009-04-21T20:41:47Z

Pass clocksource pointer to the read() callback for clocksources. This allows us to share the callback between multiple instances. [hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods] [akpm@linux-foundation.org: cleanup] Signed-off-by: Magnus Damm Acked-by: John Stultz Cc: Thomas Gleixner Signed-off-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

x86: refactor x86_quirks support

2009-02-22T23:08:11Z

Impact: cleanup Make x86_quirks support more transparent. The highlevel methods are now named: extern void x86_quirk_pre_intr_init(void); extern void x86_quirk_intr_init(void); extern void x86_quirk_trap_init(void); extern void x86_quirk_pre_time_init(void); extern void x86_quirk_time_init(void); This makes it clear that if some platform extension has to do something here that it is considered ... weird, and is discouraged. Also remove arch_hooks.h and move it into setup.h (and other header files where appropriate). Signed-off-by: Ingo Molnar

x86: KVM guest: kvm_get_tsc_khz: return khz, not lpj

2008-12-31T14:55:44Z

kvm_get_tsc_khz() currently returns the previously-calculated preset_lpj value, but it is in loops-per-jiffy, not kHz. The current code works correctly only when HZ=1000. Signed-off-by: Eduardo Habkost Signed-off-by: Avi Kivity

x86: KVM guest: sign kvmclock as paravirt

2008-12-31T14:55:00Z

Currently, we only set the KVM paravirt signature in case of CONFIG_KVM_GUEST. However, it is possible to have it turned off, while CONFIG_KVM_CLOCK is turned on. This is also a paravirt case, and should be shown accordingly. Signed-off-by: Glauber Costa Signed-off-by: Avi Kivity

kvm_setup_secondary_clock() is cpuinit

2008-11-30T18:03:37Z

Signed-off-by: Al Viro Signed-off-by: Linus Torvalds

x86: KVM guest: fix section mismatch warning in kvmclock.c

2008-11-11T18:55:10Z

WARNING: arch/x86/kernel/built-in.o(.text+0x1722c): Section mismatch in reference from the function kvm_setup_secondary_clock() to the function .devinit.text:setup_secondary_APIC_clock() The function kvm_setup_secondary_clock() references the function __devinit setup_secondary_APIC_clock(). This is often because kvm_setup_secondary_clock lacks a __devinit annotation or the annotation of setup_secondary_APIC_clock is wrong. Signed-off-by: Md.Rakib H. Mullick Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Avi Kivity

x86: KVM guest: use paravirt function to calculate cpu khz

2008-10-15T08:15:17Z

We're currently facing timing problems in guests that do calibration under heavy load, and then the load vanishes. This means we'll have a much lower lpj than we actually should, and delays end up taking less time than they should, which is a nasty bug. Solution is to pass on the lpj value from host to guest, and have it preset. Signed-off-by: Glauber Costa Signed-off-by: Avi Kivity

x86: KVM guest: make kvm_smp_prepare_boot_cpu() static

2008-07-20T09:42:37Z

This patch makes the needlessly global kvm_smp_prepare_boot_cpu() static. Signed-off-by: Adrian Bunk Signed-off-by: Avi Kivity

x86: KVM guest: Use the paravirt clocksource structs and functions

2008-06-24T18:02:33Z

This patch updates the kvm host code to use the pvclock structs and functions, thereby making it compatible with Xen. The patch also fixes an initialization bug: on SMP systems the per-cpu has two different locations early at boot and after CPU bringup. kvmclock must take that in account when registering the physical address within the host. Signed-off-by: Gerd Hoffmann Signed-off-by: Avi Kivity