search for: get_call_destination

...nsigned long addr, u16 site_clobbers, - unsigned len) +static unsigned paravirt_patch_call(void *insnbuf, const void *target, + unsigned long addr, unsigned len) { struct branch *b = insnbuf; unsigned long delta = (unsigned long)target - (addr+5); @@ -148,7 +146,7 @@ static void *get_call_destination(u8 type) return *((void **)&tmpl + type); } -unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf, +unsigned paravirt_patch_default(u8 type, void *insnbuf, unsigned long addr, unsigned len) { void *opfunc = get_call_destination(type); @@ -171,10 +169,8 @@ unsigned p...

Hi folks, With this series, the bulk of the work of pvops64 is done. Here, I integrate most of the paravirt.c and paravirt.h files, making them applicable to both architectures. CONFIG_PARAVIRT is _not_ present yet. Basically, this code is missing page table integration (patches currently being worked on by Jeremy). Enjoy

Hi folks, With this series, the bulk of the work of pvops64 is done. Here, I integrate most of the paravirt.c and paravirt.h files, making them applicable to both architectures. CONFIG_PARAVIRT is _not_ present yet. Basically, this code is missing page table integration (patches currently being worked on by Jeremy). Enjoy

...p) do { } while (0) -#endif extern struct smp_ops smp_ops; static inline void smp_send_stop(void) diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index c2130ae..f3b79b2 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -133,7 +133,6 @@ static void *get_call_destination(u8 type) .pv_time_ops = pv_time_ops, .pv_cpu_ops = pv_cpu_ops, .pv_irq_ops = pv_irq_ops, - .pv_apic_ops = pv_apic_ops, .pv_mmu_ops = pv_mmu_ops, #ifdef CONFIG_PARAVIRT_SPINLOCKS .pv_lock_ops = pv_lock_ops, @@ -403,12 +402,6 @@ NOKPROBE_SYMBOL(native_get_debugreg); NOKPROBE_SYMBOL(...

...p) do { } while (0) -#endif extern struct smp_ops smp_ops; static inline void smp_send_stop(void) diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index c2130ae..f3b79b2 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -133,7 +133,6 @@ static void *get_call_destination(u8 type) .pv_time_ops = pv_time_ops, .pv_cpu_ops = pv_cpu_ops, .pv_irq_ops = pv_irq_ops, - .pv_apic_ops = pv_apic_ops, .pv_mmu_ops = pv_mmu_ops, #ifdef CONFIG_PARAVIRT_SPINLOCKS .pv_lock_ops = pv_lock_ops, @@ -403,12 +402,6 @@ NOKPROBE_SYMBOL(native_get_debugreg); NOKPROBE_SYMBOL(...

...tof(struct paravirt_patch_template, x) / sizeof(void *)) >> diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c >> index bc0a849..1b5b247 100644 >> --- a/arch/x86/kernel/paravirt.c >> +++ b/arch/x86/kernel/paravirt.c >> @@ -128,6 +128,7 @@ static void *get_call_destination(u8 type) >> #ifdef CONFIG_PARAVIRT_SPINLOCKS >> .pv_lock_ops = pv_lock_ops, >> #endif >> + .pv_idle_ops = pv_idle_ops, >> }; >> return *((void **)&tmpl + type); >> } >> @@ -312,6 +313,10 @@ struct pv_time_ops pv_time_ops = { >&...

...tof(struct paravirt_patch_template, x) / sizeof(void *)) >> diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c >> index bc0a849..1b5b247 100644 >> --- a/arch/x86/kernel/paravirt.c >> +++ b/arch/x86/kernel/paravirt.c >> @@ -128,6 +128,7 @@ static void *get_call_destination(u8 type) >> #ifdef CONFIG_PARAVIRT_SPINLOCKS >> .pv_lock_ops = pv_lock_ops, >> #endif >> + .pv_idle_ops = pv_idle_ops, >> }; >> return *((void **)&tmpl + type); >> } >> @@ -312,6 +313,10 @@ struct pv_time_ops pv_time_ops = { >&...

...by default. Disable it, as guests * can get false positives too easily, for example if the host is diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index bbf3d59..7adb7e9 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -122,6 +122,7 @@ static void *get_call_destination(u8 type) struct paravirt_patch_template tmpl = { .pv_init_ops = pv_init_ops, .pv_time_ops = pv_time_ops, + .pv_vcpu_ops = pv_vcpu_ops, .pv_cpu_ops = pv_cpu_ops, .pv_irq_ops = pv_irq_ops, .pv_mmu_ops = pv_mmu_ops, @@ -203,6 +204,11 @@ static u64 native_steal_clock(int cpu) return...

...0644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -127,29 +127,14 @@ void __init native_pv_lock_init(void) static_branch_disable(&virt_spin_lock_key); } -/* - * Neat trick to map patch type back to the call within the - * corresponding structure. - */ -static void *get_call_destination(u8 type) -{ - struct paravirt_patch_template tmpl = { - .pv_init_ops = pv_init_ops, - .pv_time_ops = pv_time_ops, - .pv_cpu_ops = pv_cpu_ops, - .pv_irq_ops = pv_irq_ops, - .pv_mmu_ops = pv_mmu_ops, -#ifdef CONFIG_PARAVIRT_SPINLOCKS - .pv_lock_ops = pv_lock_ops, -#endif - }; - return *((void *...

This series removes some no longer needed stuff from paravirt infrastructure and puts large quantities of paravirt ops under a new config option PARAVIRT_XXL which is selected by XEN_PV only. A pvops kernel without XEN_PV being configured is about 2.5% smaller with this series applied. tip commit 5800dc5c19f34e6e03b5adab1282535cb102fafd ("x86/paravirt: Fix spectre-v2 mitigations for

This series removes some no longer needed stuff from paravirt infrastructure and puts large quantities of paravirt ops under a new config option PARAVIRT_XXL which is selected by XEN_PV only. A pvops kernel without XEN_PV being configured is about 2.5% smaller with this series applied. tip commit 5800dc5c19f34e6e03b5adab1282535cb102fafd ("x86/paravirt: Fix spectre-v2 mitigations for

Hi Linus, Here's a set of patches to update paravirt_ops and Xen for 2.6.24 A quick overview of the patchset: paravirt_ops: Remove the monolithic paravirt_ops structure, and replace it with smaller structures of related functions. Also, clean up the handling of lazy mode to make it easier to implement. x86/mm/init.c: remove a chunk of dead code Xen: - remove duplicate includes -

Hi Linus, Here's a set of patches to update paravirt_ops and Xen for 2.6.24 A quick overview of the patchset: paravirt_ops: Remove the monolithic paravirt_ops structure, and replace it with smaller structures of related functions. Also, clean up the handling of lazy mode to make it easier to implement. x86/mm/init.c: remove a chunk of dead code Xen: - remove duplicate includes -

Hi Linus, Here's a set of patches to update paravirt_ops and Xen for 2.6.24 A quick overview of the patchset: paravirt_ops: Remove the monolithic paravirt_ops structure, and replace it with smaller structures of related functions. Also, clean up the handling of lazy mode to make it easier to implement. x86/mm/init.c: remove a chunk of dead code Xen: - remove duplicate includes -

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,

Paravirt ops is currently only capable of either replacing a lot of Linux internal code or none at all. The are users that don't need all of the possibilities pv-ops delivers though. On KVM for example we're perfectly fine not using the PV MMU, thus not touching any MMU code. That way we don't have to improve pv-ops to become fast, we just don't compile the MMU parts in! This

Paravirt ops is currently only capable of either replacing a lot of Linux internal code or none at all. The are users that don't need all of the possibilities pv-ops delivers though. On KVM for example we're perfectly fine not using the PV MMU, thus not touching any MMU code. That way we don't have to improve pv-ops to become fast, we just don't compile the MMU parts in! This

change from v3: add x86 vcpu preempted check patch change from v2: no code change, fix typos, update some comments change from v1: a simplier definition of default vcpu_is_preempted skip mahcine type check on ppc, and add config. remove dedicated macro. add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner. add more comments thanks boqun and Peter's suggestion.

change from v3: add x86 vcpu preempted check patch change from v2: no code change, fix typos, update some comments change from v1: a simplier definition of default vcpu_is_preempted skip mahcine type check on ppc, and add config. remove dedicated macro. add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner. add more comments thanks boqun and Peter's suggestion.