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HV: bug fix on emulating msi message from guest

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Current code has a mistake associating destination with
redirectionhint. So just use the destination mode to work out
destination mode.

When injecting the msi interrupt to vcpu in hypervisor layer,
current code ingnores the redirection hint(RH) bit of msi address
message from guest, and just use the destination mode and
destination ID. So correctly before injecting, check the RH bit,
if set, choose the vcpu that has lowest priority to inject msi.

Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
Reviewed-by: Zhao, Yakui <yakui.zhao@intel.com>
Reviewed-by: Yin, Fengwei <fengwei.yin@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Zheng, Gen
2018-07-18 23:41:08 +08:00
committed by lijinxia
parent 9695d3bd15
commit 20c80ea72a
4 changed files with 11 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
hypervisor/arch/x86/guest/vioapic.c
View File

@@ -93,7 +93,7 @@ vioapic_send_intr(struct vioapic *vioapic, uint8_t pin)
vector = rte.u.lo_32 & IOAPIC_RTE_LOW_INTVEC;
dest = (uint32_t)(rte.full >> IOAPIC_RTE_DEST_SHIFT);
vlapic_deliver_intr(vioapic->vm, level, dest, phys, delmode, vector);
vlapic_deliver_intr(vioapic->vm, level, dest, phys, delmode, vector, false);
}
static void

13
hypervisor/arch/x86/guest/vlapic.c
View File

@@ -1654,7 +1654,7 @@ vlapic_set_apicbase(struct vlapic *vlapic, uint64_t new)
void
vlapic_deliver_intr(struct vm *vm, bool level, uint32_t dest, bool phys,
uint32_t delmode, uint32_t vec)
uint32_t delmode, uint32_t vec, bool rh)
{
bool lowprio;
uint16_t vcpu_id;
@@ -1668,7 +1668,7 @@ vlapic_deliver_intr(struct vm *vm, bool level, uint32_t dest, bool phys,
"vlapic intr invalid delmode %#x", delmode);
return;
}
lowprio = (delmode == IOAPIC_RTE_DELLOPRI);
lowprio = (delmode == IOAPIC_RTE_DELLOPRI) || rh;
/*
* We don't provide any virtual interrupt redirection hardware so
@@ -1856,7 +1856,7 @@ vlapic_intr_msi(struct vm *vm, uint64_t addr, uint64_t msg)
{
uint32_t delmode, vec;
uint32_t dest;
bool phys;
bool phys, rh;
dev_dbg(ACRN_DBG_LAPIC, "lapic MSI addr: %#lx msg: %#lx", addr, msg);
@@ -1877,15 +1877,16 @@ vlapic_intr_msi(struct vm *vm, uint64_t addr, uint64_t msg)
* physical otherwise.
*/
dest = (uint32_t)(addr >> 12U) & 0xffU;
phys = ((addr & (MSI_ADDR_RH | MSI_ADDR_LOG)) !=
(MSI_ADDR_RH | MSI_ADDR_LOG));
phys = ((addr & MSI_ADDR_LOG) != MSI_ADDR_LOG);
rh = ((addr & MSI_ADDR_RH) == MSI_ADDR_RH);
delmode = (uint32_t)msg & APIC_DELMODE_MASK;
vec = (uint32_t)msg & 0xffU;
dev_dbg(ACRN_DBG_LAPIC, "lapic MSI %s dest %#x, vec %u",
phys ? "physical" : "logical", dest, vec);
vlapic_deliver_intr(vm, LAPIC_TRIG_EDGE, dest, phys, delmode, vec);
vlapic_deliver_intr(vm, LAPIC_TRIG_EDGE, dest, phys, delmode, vec, rh);
return 0;
}