Zhenlei Huang 63bf943d4a Hyper-V: vmbus: Add NULL check for vmbus_res ... QEMU emulates Hyper-V [1] but lacks the emulation for vmbus_res, thus no coherence information is available. Add NULL check for it and fallback to no coherence. This will prevent FreeBSD guests from panic on QEMU with the Hyper-V enlightenment hv-synic enabled. For real Hyper-V, both gen1 and gen2 have vmbus_res then they are not affected by this change. 1. https://www.qemu.org/docs/master/system/i386/hyperv.html PR: 274810 Reviewed by: mhorne, emaste, delphij, whu Diagnosed by: mhorne Fixes: e7a9817b8d Hyper-V: vmbus: implementat bus_get_dma_tag in vmbus Insta-MFC approved by: re (delphij) for 14.0-RC4 Differential Revision: https://reviews.freebsd.org/D42414		2023-11-02 17:07:11 +08:00
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hvsock	sys: Remove $FreeBSD$: one-line .c pattern	2023-08-16 11:54:36 -06:00
include	sys: Remove $FreeBSD$: two-line .h pattern	2023-08-16 11:54:11 -06:00
input	sys: Remove $FreeBSD$: one-line .c pattern	2023-08-16 11:54:36 -06:00
netvsc	bpf: Add IfAPI analogue for bpf_peers_present()	2023-10-13 14:33:31 -04:00
pcib	hyperv/vmbus: Flip a message to only be emitted on failure	2023-09-11 16:51:46 +08:00
storvsc	sys: Remove $FreeBSD$: one-line .c pattern	2023-08-16 11:54:36 -06:00
utilities	sys: Remove $FreeBSD$: one-line .c pattern	2023-08-16 11:54:36 -06:00
vmbus	Hyper-V: vmbus: Add NULL check for vmbus_res	2023-11-02 17:07:11 +08:00