search for: pt_update_irq

...t tpr_threshold = 0; enum hvm_intblk intblk; + int pt_vector = -1; /* Block event injection when single step with MTF. */ if ( unlikely(v->arch.hvm_vcpu.single_step) ) @@ -216,7 +217,7 @@ void vmx_intr_assist(void) } /* Crank the handle on interrupt state. */ - pt_update_irq(v); + pt_vector = pt_update_irq(v); do { intack = hvm_vcpu_has_pending_irq(v); @@ -227,16 +228,34 @@ void vmx_intr_assist(void) goto out; intblk = hvm_interrupt_blocked(v, intack); - if ( intblk == hvm_intblk_tpr ) + if ( cpu_has_vmx_virtual_...

...ses PIT and lapic timer, it can''t boot or install. The cause is: At some point, Fedora 7 disables PIT interrupt by "vioapic.redirtbl[2].mask = 1, vpic.imr.bit0 = 0 (unmasked), vlapic.lvt[LINT0].mask = 1", and enables vlapic timer interrupt generating; In vmx_intr_assist() -> pt_update_irq(), we always choose IRQ0 rather than vlapic timer interrupt, because: 1) is_isa_irq_masked(v, 0) returns false due to vpic.imr.bit0 = 0; 2) the PIT''s pt->last_plt_gtime is less than vlapic timer''s -- at least I can see this on my hosts; However, in pt_update_irq() -> hvm_is...

Dear all: I have found a big bug on xen concerning time virtualization. Please let me show you the whole process: 1 Phenomenon when I run a JVM based program in IE browser in my Virtual Machine, I have found clearly that time at the right bottom corner in my VM gets more slower and slower. I studied the bug deeply, and found something below. 2 Xen vmx_vmexit_handler --> ......... -->

From: Yang Zhang <yang.z.zhang@Intel.com> The follwoing patches are adding the Posted Interrupt supporting to Xen: Posted Interrupt allows vAPIC interrupts to inject into guest directly without any vmexit. - When delivering a interrupt to guest, if target vcpu is running, update Posted-interrupt requests bitmap and send a notification event to the vcpu. Then the vcpu will handle this

This patch series is a reworking of a series developed by Mukesh Rathor at Oracle. The entirety of the design and development was done by him; I have only reworked, reorganized, and simplified things in a way that I think makes more sense. The vast majority of the credit for this effort therefore goes to him. This version is labelled v13 because it is based on his most recent series, v11.