John Baldwin 6db55a0f3a Rework pass through changes in r305485 to be safer. ... Specifically, devices that do not support PCI-e FLR and were not gracefully shutdown by the guest OS could continue to issue DMA requests after the VM was terminated. The changes in r305485 meant that those DMA requests were completed against the host's memory which could result in random memory corruption. Instead, leave ppt devices that are not attached to a VM disabled in the IOMMU and only restore the devices to the host domain if the ppt(4) driver is detached from a device. As an added safety belt, disable busmastering for a pass-through device when before adding it to the host domain during ppt(4) detach. PR: 222937 Tested by: Harry Schmalzbauer <freebsd@omnilan.de> Reviewed by: grehan MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D12661		2017-10-27 14:57:14 +00:00
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acpica	Ensure that resume path on amd64 only accesses page tables for normal	2017-05-15 20:52:43 +00:00
amd64	Fix the VM_NRESERVLEVEL == 0 build.	2017-10-23 15:34:05 +00:00
cloudabi32	Move struct syscall_args syscall arguments parameters container into	2017-06-12 21:03:23 +00:00
cloudabi64	Keep top page on CloudABI to work around AMD Ryzen stability issues.	2017-08-02 13:08:10 +00:00
conf	With r181803 on 2008-08-17 23:27:27Z the first VIMAGE commit went into	2017-10-20 21:40:59 +00:00
ia32	amd64: avoid acquiring dt lock if possible (which is the common case)	2017-10-20 03:30:02 +00:00
include	Make the sleepq chain hash size configurable per-arch and bump on amd64.	2017-10-22 20:43:50 +00:00
linux	amd64: avoid acquiring dt lock if possible (which is the common case)	2017-10-20 03:30:02 +00:00
linux32	amd64: avoid acquiring dt lock if possible (which is the common case)	2017-10-20 03:30:02 +00:00
pci	pcicfg: Fix direct calls of pci_cfg{read,write} on systems w/o PCI host bridge.	2017-05-04 05:28:46 +00:00
sgx	Fix module unload when SGX support is not present in CPU.	2017-08-18 14:47:06 +00:00
vmm	Rework pass through changes in r305485 to be safer.	2017-10-27 14:57:14 +00:00
Makefile	Bring the tags and links entries for amd64 up to date.	2015-10-27 22:59:24 +00:00