search for: pv_lazy_ops

...- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -265,6 +265,69 @@ int paravirt_disable_iospace(void) } return ret; +} + +static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; + +static void enter_lazy(enum paravirt_lazy_mode mode, struct pv_lazy_ops *ops) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); + BUG_ON(preemptible()); + + x86_write_percpu(paravirt_lazy_mode, mode); + (*ops->enter)(); +} + +static void leave_lazy(enum paravirt_lazy_mode mode, struct pv_lazy_ops *ops) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_...

...- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -265,6 +265,69 @@ int paravirt_disable_iospace(void) } return ret; +} + +static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; + +static void enter_lazy(enum paravirt_lazy_mode mode, struct pv_lazy_ops *ops) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); + BUG_ON(preemptible()); + + x86_write_percpu(paravirt_lazy_mode, mode); + (*ops->enter)(); +} + +static void leave_lazy(enum paravirt_lazy_mode mode, struct pv_lazy_ops *ops) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_...

...mode for batching updates / context switch */ -enum paravirt_lazy_mode { - PARAVIRT_LAZY_NONE = 0, - PARAVIRT_LAZY_MMU = 1, - PARAVIRT_LAZY_CPU = 2, - PARAVIRT_LAZY_FLUSH = 3, -}; - /* general info */ struct pv_info { @@ -64,9 +55,10 @@ struct pv_init_ops { }; -struct pv_misc_ops { +struct pv_lazy_ops { /* Set deferred update mode, used for batching operations. */ - void (*set_lazy_mode)(enum paravirt_lazy_mode mode); + void (*enter)(void); + void (*leave)(void); }; struct pv_time_ops { @@ -131,6 +123,8 @@ struct pv_cpu_ops { /* These two are jmp to, not actually called. */ void (*irq_...

...mode for batching updates / context switch */ -enum paravirt_lazy_mode { - PARAVIRT_LAZY_NONE = 0, - PARAVIRT_LAZY_MMU = 1, - PARAVIRT_LAZY_CPU = 2, - PARAVIRT_LAZY_FLUSH = 3, -}; - /* general info */ struct pv_info { @@ -64,9 +55,10 @@ struct pv_init_ops { }; -struct pv_misc_ops { +struct pv_lazy_ops { /* Set deferred update mode, used for batching operations. */ - void (*set_lazy_mode)(enum paravirt_lazy_mode mode); + void (*enter)(void); + void (*leave)(void); }; struct pv_time_ops { @@ -131,6 +123,8 @@ struct pv_cpu_ops { /* These two are jmp to, not actually called. */ void (*irq_...

...nclude/asm/paravirt_types.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index a6b8f9f..5a18a66 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -97,7 +97,6 @@ struct pv_lazy_ops { struct pv_time_ops { unsigned long long (*sched_clock)(void); unsigned long long (*steal_clock)(int cpu); - unsigned long (*get_tsc_khz)(void); }; struct pv_cpu_ops { -- 2.1.4

...>>> diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h >>> index a6b8f9f..5a18a66 100644 >>> --- a/arch/x86/include/asm/paravirt_types.h >>> +++ b/arch/x86/include/asm/paravirt_types.h >>> @@ -97,7 +97,6 @@ struct pv_lazy_ops { >>> struct pv_time_ops { >>> unsigned long long (*sched_clock)(void); >>> unsigned long long (*steal_clock)(int cpu); >>> - unsigned long (*get_tsc_khz)(void); >>> }; >>> >>> struct pv_cpu_ops { >>> > -- &...

...nclude/asm/paravirt_types.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index ce029e4..31247b5 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -97,7 +97,6 @@ struct pv_lazy_ops { struct pv_time_ops { unsigned long long (*sched_clock)(void); unsigned long long (*steal_clock)(int cpu); - unsigned long (*get_tsc_khz)(void); }; struct pv_cpu_ops { -- 2.1.4

...nclude/asm/paravirt_types.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index a6b8f9f..5a18a66 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -97,7 +97,6 @@ struct pv_lazy_ops { struct pv_time_ops { unsigned long long (*sched_clock)(void); unsigned long long (*steal_clock)(int cpu); - unsigned long (*get_tsc_khz)(void); }; struct pv_cpu_ops { -- 2.1.4

...>>> diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h >>> index a6b8f9f..5a18a66 100644 >>> --- a/arch/x86/include/asm/paravirt_types.h >>> +++ b/arch/x86/include/asm/paravirt_types.h >>> @@ -97,7 +97,6 @@ struct pv_lazy_ops { >>> struct pv_time_ops { >>> unsigned long long (*sched_clock)(void); >>> unsigned long long (*steal_clock)(int cpu); >>> - unsigned long (*get_tsc_khz)(void); >>> }; >>> >>> struct pv_cpu_ops { >>> > -- &...

...nclude/asm/paravirt_types.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index ce029e4..31247b5 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -97,7 +97,6 @@ struct pv_lazy_ops { struct pv_time_ops { unsigned long long (*sched_clock)(void); unsigned long long (*steal_clock)(int cpu); - unsigned long (*get_tsc_khz)(void); }; struct pv_cpu_ops { -- 2.1.4

...rt_callee_save pud_val; struct paravirt_callee_save make_pud; @@ -291,10 +274,6 @@ struct pv_mmu_ops { void (*set_pgd)(pgd_t *pgdp, pgd_t pgdval); #endif /* CONFIG_PGTABLE_LEVELS >= 5 */ -#endif /* CONFIG_PGTABLE_LEVELS >= 4 */ - -#endif /* CONFIG_PGTABLE_LEVELS >= 3 */ - struct pv_lazy_ops lazy_mode; /* dom0 ops */ diff --git a/arch/x86/include/asm/pgtable-3level_types.h b/arch/x86/include/asm/pgtable-3level_types.h index 80fbb4a9ed87..56baf43befb4 100644 --- a/arch/x86/include/asm/pgtable-3level_types.h +++ b/arch/x86/include/asm/pgtable-3level_types.h @@ -20,12 +20,7 @@ typedef...

...rt_callee_save pud_val; struct paravirt_callee_save make_pud; @@ -291,10 +274,6 @@ struct pv_mmu_ops { void (*set_pgd)(pgd_t *pgdp, pgd_t pgdval); #endif /* CONFIG_PGTABLE_LEVELS >= 5 */ -#endif /* CONFIG_PGTABLE_LEVELS >= 4 */ - -#endif /* CONFIG_PGTABLE_LEVELS >= 3 */ - struct pv_lazy_ops lazy_mode; /* dom0 ops */ diff --git a/arch/x86/include/asm/pgtable-3level_types.h b/arch/x86/include/asm/pgtable-3level_types.h index 80fbb4a9ed87..56baf43befb4 100644 --- a/arch/x86/include/asm/pgtable-3level_types.h +++ b/arch/x86/include/asm/pgtable-3level_types.h @@ -20,12 +20,7 @@ typedef...

The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used only rather seldom these days. Xen on x86 requires 64-bit support and with Grub2 now supporting PVH officially since version 2.04 there is no need to keep 32-bit PV guest support alive in the Linux kernel. Additionally Meltdown mitigation is not available in the

The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used only rather seldom these days. Xen on x86 requires 64-bit support and with Grub2 now supporting PVH officially since version 2.04 there is no need to keep 32-bit PV guest support alive in the Linux kernel. Additionally Meltdown mitigation is not available in the

The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used only rather seldom these days. Xen on x86 requires 64-bit support and with Grub2 now supporting PVH officially since version 2.04 there is no need to keep 32-bit PV guest support alive in the Linux kernel. Additionally Meltdown mitigation is not available in the

The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used only rather seldom these days. Xen on x86 requires 64-bit support and with Grub2 now supporting PVH officially since version 2.04 there is no need to keep 32-bit PV guest support alive in the Linux kernel. Additionally Meltdown mitigation is not available in the

The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used only rather seldom these days. Xen on x86 requires 64-bit support and with Grub2 now supporting PVH officially since version 2.04 there is no need to keep 32-bit PV guest support alive in the Linux kernel. Additionally Meltdown mitigation is not available in the

Today paravirtualization is a all-or-nothing game: either a kernel is compiled with no paravirtualization support at all, or it is supporting paravirtualized environments like Xen pv-guests or lguest additionally to some paravirtualized tuning for KVM, Hyperv, VMWare or Xen HVM-guests. As support of pv-guests requires quite intrusive pv-hooks (e.g. all access functions to page table entries,

Today paravirtualization is a all-or-nothing game: either a kernel is compiled with no paravirtualization support at all, or it is supporting paravirtualized environments like Xen pv-guests or lguest additionally to some paravirtualized tuning for KVM, Hyperv, VMWare or Xen HVM-guests. As support of pv-guests requires quite intrusive pv-hooks (e.g. all access functions to page table entries,

Hi folks, Here is the result of the latest work on the pvops front, after the x86 arch merge. From the functionality point of view, almost nothing was changed, except for proper vsmp support - which was discussed, but not implemented before - and the introduction of smp_ops in x86_64, which eased the merging of the smp header. Speaking of the merge, a significant part (although not majority) of