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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
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5
hypervisor/arch/x86/assign.c
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@@ -200,9 +200,8 @@ static void ptdev_build_physical_msi(struct vm *vm, struct ptdev_msi_info *info,
/* get physical destination cpu mask */
dest = (info->vmsi_addr >> 12) & 0xffU;
phys = ((info->vmsi_addr &
(MSI_ADDR_RH | MSI_ADDR_LOG)) !=
(MSI_ADDR_RH | MSI_ADDR_LOG));
phys = ((info->vmsi_addr & MSI_ADDR_LOG) != MSI_ADDR_LOG);
calcvdest(vm, &vdmask, dest, phys);
pdmask = vcpumask2pcpumask(vm, vdmask);