search for: lockbyte

...id kvm_halt_stats(enum pv_lock_stats type) +{ +} + +static inline u64 spin_time_start(void) +{ + return 0; +} + +static inline void spin_time_accum_blocked(u64 start) +{ +} +#endif /* CONFIG_KVM_DEBUG_FS */ + +/* + * Halt the current CPU & release it back to the host + */ +void kvm_halt_cpu(u8 *lockbyte) +{ + unsigned long flags; + u64 start; + + if (in_nmi()) + return; + + /* + * Make sure an interrupt handler can't upset things in a + * partially setup state. + */ + local_irq_save(flags); + /* + * Don't halt if the lock byte is defined and is free + */ + if (lockbyte && !AC...

...id kvm_halt_stats(enum pv_lock_stats type) +{ +} + +static inline u64 spin_time_start(void) +{ + return 0; +} + +static inline void spin_time_accum_blocked(u64 start) +{ +} +#endif /* CONFIG_KVM_DEBUG_FS */ + +/* + * Halt the current CPU & release it back to the host + */ +void kvm_halt_cpu(u8 *lockbyte) +{ + unsigned long flags; + u64 start; + + if (in_nmi()) + return; + + /* + * Make sure an interrupt handler can't upset things in a + * partially setup state. + */ + local_irq_save(flags); + /* + * Don't halt if the lock byte is defined and is free + */ + if (lockbyte && !AC...

...+++++++++++++++++++++++ I do wonder why all this needs to live in x86.. > > +#ifdef CONFIG_QUEUE_SPINLOCK > + > +static __always_inline void pv_kick_cpu(int cpu) > +{ > + PVOP_VCALLEE1(pv_lock_ops.kick_cpu, cpu); > +} > + > +static __always_inline void pv_lockwait(u8 *lockbyte) > +{ > + PVOP_VCALLEE1(pv_lock_ops.lockwait, lockbyte); > +} > + > +static __always_inline void pv_lockstat(enum pv_lock_stats type) > +{ > + PVOP_VCALLEE1(pv_lock_ops.lockstat, type); > +} Why are any of these PV ops? they're only called from other pv_*() functions. W...

v12->v13: - Change patch 9 to generate separate versions of the queue_spin_lock_slowpath functions for bare metal and PV guest. This reduces the performance impact of the PV code on bare metal systems. v11->v12: - Based on PeterZ's version of the qspinlock patch (https://lkml.org/lkml/2014/6/15/63). - Incorporated many of the review comments from Konrad Wilk and Paolo

v12->v13: - Change patch 9 to generate separate versions of the queue_spin_lock_slowpath functions for bare metal and PV guest. This reduces the performance impact of the PV code on bare metal systems. v11->v12: - Based on PeterZ's version of the qspinlock patch (https://lkml.org/lkml/2014/6/15/63). - Incorporated many of the review comments from Konrad Wilk and Paolo

...xmap(unsigned /* enum fixed_addresses */ idx, #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) +#ifdef CONFIG_QUEUE_SPINLOCK + +static __always_inline void pv_kick_cpu(int cpu) +{ + PVOP_VCALLEE1(pv_lock_ops.kick_cpu, cpu); +} + +static __always_inline void pv_lockwait(u8 *lockbyte) +{ + PVOP_VCALLEE1(pv_lock_ops.lockwait, lockbyte); +} + +static __always_inline void pv_lockstat(enum pv_lock_stats type) +{ + PVOP_VCALLEE1(pv_lock_ops.lockstat, type); +} + +#else static __always_inline void __ticket_lock_spinning(struct arch_spinlock *lock, __ticket_t ticket) { @@ -7...

...xmap(unsigned /* enum fixed_addresses */ idx, #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) +#ifdef CONFIG_QUEUE_SPINLOCK + +static __always_inline void pv_kick_cpu(int cpu) +{ + PVOP_VCALLEE1(pv_lock_ops.kick_cpu, cpu); +} + +static __always_inline void pv_lockwait(u8 *lockbyte) +{ + PVOP_VCALLEE1(pv_lock_ops.lockwait, lockbyte); +} + +static __always_inline void pv_lockstat(enum pv_lock_stats type) +{ + PVOP_VCALLEE1(pv_lock_ops.lockstat, type); +} + +#else static __always_inline void __ticket_lock_spinning(struct arch_spinlock *lock, __ticket_t ticket) { @@ -7...

v11->v12: - Based on PeterZ's version of the qspinlock patch (https://lkml.org/lkml/2014/6/15/63). - Incorporated many of the review comments from Konrad Wilk and Paolo Bonzini. - The pvqspinlock code is largely from my previous version with PeterZ's way of going from queue tail to head and his idea of using callee saved calls to KVM and XEN codes. v10->v11: - Use a

v11->v12: - Based on PeterZ's version of the qspinlock patch (https://lkml.org/lkml/2014/6/15/63). - Incorporated many of the review comments from Konrad Wilk and Paolo Bonzini. - The pvqspinlock code is largely from my previous version with PeterZ's way of going from queue tail to head and his idea of using callee saved calls to KVM and XEN codes. v10->v11: - Use a

...map(unsigned /* enum fixed_addresses */ idx, #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) +#ifdef CONFIG_QUEUE_SPINLOCK + +static __always_inline void pv_kick_cpu(int cpu) +{ + PVOP_VCALLEE1(pv_lock_ops.kick_cpu, cpu); +} + +static __always_inline void +pv_lockwait(u8 *lockbyte) +{ + PVOP_VCALLEE1(pv_lock_ops.lockwait, lockbyte); +} + +static __always_inline void pv_lockstat(enum pv_lock_stats type) +{ + PVOP_VCALLEE1(pv_lock_ops.lockstat, type); +} + +#else static __always_inline void __ticket_lock_spinning(struct arch_spinlock *lock, __ticket_t ticket) { @@ -7...

...map(unsigned /* enum fixed_addresses */ idx, #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) +#ifdef CONFIG_QUEUE_SPINLOCK + +static __always_inline void pv_kick_cpu(int cpu) +{ + PVOP_VCALLEE1(pv_lock_ops.kick_cpu, cpu); +} + +static __always_inline void +pv_lockwait(u8 *lockbyte) +{ + PVOP_VCALLEE1(pv_lock_ops.lockwait, lockbyte); +} + +static __always_inline void pv_lockstat(enum pv_lock_stats type) +{ + PVOP_VCALLEE1(pv_lock_ops.lockstat, type); +} + +#else static __always_inline void __ticket_lock_spinning(struct arch_spinlock *lock, __ticket_t ticket) { @@ -7...