diff options
27 files changed, 79 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/kvm_para.h b/arch/alpha/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/alpha/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/arm/include/asm/kvm_para.h b/arch/arm/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/arm/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/avr32/include/asm/kvm_para.h b/arch/avr32/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/avr32/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/blackfin/include/asm/kvm_para.h b/arch/blackfin/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/blackfin/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/c6x/include/asm/kvm_para.h b/arch/c6x/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/c6x/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/frv/include/asm/kvm_para.h b/arch/frv/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/frv/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/h8300/include/asm/kvm_para.h b/arch/h8300/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/h8300/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/hexagon/include/asm/kvm_para.h b/arch/hexagon/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/hexagon/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/ia64/include/asm/kvm_para.h b/arch/ia64/include/asm/kvm_para.h index 1588aee..2019cb9 100644 --- a/arch/ia64/include/asm/kvm_para.h +++ b/arch/ia64/include/asm/kvm_para.h @@ -26,6 +26,11 @@ static inline unsigned int kvm_arch_para_features(void) return 0; } +static inline bool kvm_check_and_clear_guest_paused(void) +{ + return false; +} + #endif #endif diff --git a/arch/m68k/include/asm/kvm_para.h b/arch/m68k/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/m68k/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/microblaze/include/asm/kvm_para.h b/arch/microblaze/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/microblaze/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/mips/include/asm/kvm_para.h b/arch/mips/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/mips/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/mn10300/include/asm/kvm_para.h b/arch/mn10300/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/mn10300/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/openrisc/include/asm/kvm_para.h b/arch/openrisc/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/openrisc/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/parisc/include/asm/kvm_para.h b/arch/parisc/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/parisc/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/powerpc/include/asm/kvm_para.h b/arch/powerpc/include/asm/kvm_para.h index 7b754e7..c18916b 100644 --- a/arch/powerpc/include/asm/kvm_para.h +++ b/arch/powerpc/include/asm/kvm_para.h @@ -206,6 +206,11 @@ static inline unsigned int kvm_arch_para_features(void) return r; } +static inline bool kvm_check_and_clear_guest_paused(void) +{ + return false; +} + #endif /* __KERNEL__ */ #endif /* __POWERPC_KVM_PARA_H__ */ diff --git a/arch/s390/include/asm/kvm_para.h b/arch/s390/include/asm/kvm_para.h index 6964db2..a988329 100644 --- a/arch/s390/include/asm/kvm_para.h +++ b/arch/s390/include/asm/kvm_para.h @@ -149,6 +149,11 @@ static inline unsigned int kvm_arch_para_features(void) return 0; } +static inline bool kvm_check_and_clear_guest_paused(void) +{ + return false; +} + #endif #endif /* __S390_KVM_PARA_H */ diff --git a/arch/score/include/asm/kvm_para.h b/arch/score/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/score/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/sh/include/asm/kvm_para.h b/arch/sh/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/sh/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/sparc/include/asm/kvm_para.h b/arch/sparc/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/sparc/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/tile/include/asm/kvm_para.h b/arch/tile/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/tile/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/um/include/asm/kvm_para.h b/arch/um/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/um/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/unicore32/include/asm/kvm_para.h b/arch/unicore32/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/unicore32/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h index 734c376..99c4bbe 100644 --- a/arch/x86/include/asm/kvm_para.h +++ b/arch/x86/include/asm/kvm_para.h @@ -95,6 +95,14 @@ struct kvm_vcpu_pv_apf_data { extern void kvmclock_init(void); extern int kvm_register_clock(char *txt); +#ifdef CONFIG_KVM_CLOCK +bool kvm_check_and_clear_guest_paused(void); +#else +static inline bool kvm_check_and_clear_guest_paused(void) +{ + return false; +} +#endif /* CONFIG_KVMCLOCK */ /* This instruction is vmcall. On non-VT architectures, it will generate a * trap that we will then rewrite to the appropriate instruction. diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index f8492da6..4ba090c 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -22,6 +22,7 @@ #include <asm/msr.h> #include <asm/apic.h> #include <linux/percpu.h> +#include <linux/hardirq.h> #include <asm/x86_init.h> #include <asm/reboot.h> @@ -114,6 +115,26 @@ static void kvm_get_preset_lpj(void) preset_lpj = lpj; } +bool kvm_check_and_clear_guest_paused(void) +{ + bool ret = false; + struct pvclock_vcpu_time_info *src; + + /* + * per_cpu() is safe here because this function is only called from + * timer functions where preemption is already disabled. + */ + WARN_ON(!in_atomic()); + src = &__get_cpu_var(hv_clock); + if ((src->flags & PVCLOCK_GUEST_STOPPED) != 0) { + __this_cpu_and(hv_clock.flags, ~PVCLOCK_GUEST_STOPPED); + ret = true; + } + + return ret; +} +EXPORT_SYMBOL_GPL(kvm_check_and_clear_guest_paused); + static struct clocksource kvm_clock = { .name = "kvm-clock", .read = kvm_clock_get_cycles, diff --git a/arch/xtensa/include/asm/kvm_para.h b/arch/xtensa/include/asm/kvm_para.h new file mode 100644 index 0000000..14fab8f --- /dev/null +++ b/arch/xtensa/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/include/asm-generic/kvm_para.h b/include/asm-generic/kvm_para.h new file mode 100644 index 0000000..05ef7e7 --- /dev/null +++ b/include/asm-generic/kvm_para.h @@ -0,0 +1,14 @@ +#ifndef _ASM_GENERIC_KVM_PARA_H +#define _ASM_GENERIC_KVM_PARA_H + + +/* + * This function is used by architectures that support kvm to avoid issuing + * false soft lockup messages. + */ +static inline bool kvm_check_and_clear_guest_paused(void) +{ + return false; +} + +#endif |
