On 2017年08月22日 21:12, Wei Liu wrote: > On Wed, Aug 09, 2017 at 04:34:08PM -0400, Lan Tianyu wrote: >> From: Chao Gao <chao....@intel.com> >> >> The BIOS reports the remapping hardware units in a platform to system >> software >> through the DMA Remapping Reporting (DMAR) ACPI table. >> New fields are introduces for DMAR table. These new fields are set by >> toolstack through parsing guest's config file. construct_dmar() is added to >> build DMAR table according to the new fields. >> >> Signed-off-by: Chao Gao <chao....@intel.com> >> Signed-off-by: Lan Tianyu <tianyu....@intel.com> >> --- >> tools/libacpi/build.c | 57 >> +++++++++++++++++++++++++++++++++++++++++++++++++ >> tools/libacpi/libacpi.h | 9 ++++++++ >> 2 files changed, 66 insertions(+) >> >> diff --git a/tools/libacpi/build.c b/tools/libacpi/build.c >> index f9881c9..c7cc784 100644 >> --- a/tools/libacpi/build.c >> +++ b/tools/libacpi/build.c >> @@ -28,6 +28,10 @@ >> >> #define ACPI_MAX_SECONDARY_TABLES 16 >> >> +#define VTD_HOST_ADDRESS_WIDTH 39 >> +#define I440_PSEUDO_BUS_PLATFORM 0xff >> +#define I440_PSEUDO_DEVFN_IOAPIC 0x0 > > I have some stupid questions. What are these I440 values? Where do they > come from? >
Each IOAPIC device in the system reported via ACPI MADT must be explicitly enumerated under one specific remapping hardware unit. We assigned IOAPCI unit to bdf ff:00 and referenced Qemu vIOMMU implementation. -- Best regards Tianyu Lan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
