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hv:enable APICv-Posted Interrupt

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to enable APICv Posted interrupt supported, following the
 specifications defined in Intel SDM Section #29.6, Volume3.

 Posted-interrupt processing is a feature by which a processor
 processes the virtual interrupts by recording them as pending
 on the virtual-APIC page.

 Injecting interrupts to VCPU from remote CPU without causing
 VM exit on the destination, following steps in SDM Section 29.6,volume3:

Tracked-On: #1447
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yonghua Huang
2018-10-09 19:50:58 +08:00
committed by Xie, Nanlin
parent a028567b9c
commit 38d5df723d
9 changed files with 80 additions and 4 deletions
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19
hypervisor/arch/x86/notify.c
View File

@@ -96,3 +96,22 @@ void setup_notification(void)
dev_dbg(ACRN_DBG_PTIRQ, "NOTIFY: irq[%d] setup vector %x",
notification_irq, irq_to_vector(notification_irq));
}
static void posted_intr_notification(__unused uint32_t irq, __unused void *data)
{
/* Dummy IRQ handler for case that Posted-Interrupt Notification
* is sent to vCPU in root mode(isn't running),interrupt will be
* picked up in next vmentry,do nothine here.
*/
}
/*pre-conditon: be called only by BSP initialization proccess*/
void setup_posted_intr_notification(void)
{
if (request_irq(POSTED_INTR_NOTIFY_IRQ,
posted_intr_notification,
NULL, IRQF_NONE) < 0) {
pr_err("Failed to setup posted-intr notification");
return;
}
}