Date: Thu, 8 Jun 2017 12:11:30 +0000 (UTC) From: Dexuan Cui <dexuan@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r319690 - head/sys/dev/hyperv/pcib Message-ID: <201706081211.v58CBUXr064784@repo.freebsd.org>
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Author: dexuan Date: Thu Jun 8 12:11:30 2017 New Revision: 319690 URL: https://svnweb.freebsd.org/changeset/base/319690 Log: hyperv/pcib: use the device serial number as PCI domain Currently the PCI domain is initialized with the instance GUID in vmbus_pcib_attach(). It turns out the GUID can change across VM reboot, while some users want a persistent value for PCI domain. The solution is that we can change to use the device serial number, which starts with 1 and is unique within a VM. Obtained from: Haiyang Zhang MFC after: 1 day Sponsored by: Microsoft Modified: head/sys/dev/hyperv/pcib/vmbus_pcib.c Modified: head/sys/dev/hyperv/pcib/vmbus_pcib.c ============================================================================== --- head/sys/dev/hyperv/pcib/vmbus_pcib.c Thu Jun 8 08:10:57 2017 (r319689) +++ head/sys/dev/hyperv/pcib/vmbus_pcib.c Thu Jun 8 12:11:30 2017 (r319690) @@ -574,6 +574,8 @@ new_pcichild_device(struct hv_pcibus *hbus, struct pci hpdev->desc = *desc; mtx_lock(&hbus->device_list_lock); + if (TAILQ_EMPTY(&hbus->children)) + hbus->pci_domain = desc->ser & 0xFFFF; TAILQ_INSERT_TAIL(&hbus->children, hpdev, link); mtx_unlock(&hbus->device_list_lock); return (hpdev);
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