| Message ID | 20231220134346.22430-1-roger.pau@citrix.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | x86/iommu: improve setup time of hwdom IOMMU | expand |
On 20.12.2023 14:43, Roger Pau Monne wrote: > Hello, > > The aim of the series is to reduce boot time setup of IOMMU page tables > for dom0. > > First and second patches are a pre-req, as further patches can end up > attempting to create maps above the max RAM address, and hence without > properly setting the IOMMU page tables levels those attempts to map > would fail. > > Last 4 patches rework the hardware domain IOMMU setup to use a rangeset > instead of iterating over all addresses up to the max RAM page. See > patch 5/6 for performance figures. > > Thanks, Roger. > > Roger Pau Monne (6): > x86/p2m: move and rename paging_max_paddr_bits() > amd-vi: set IOMMU page table levels based on guest reported paddr > width > x86/iommu: introduce a rangeset to perform hwdom IOMMU setup > x86/iommu: remove regions not to be mapped > x86/iommu: switch hwdom IOMMU to use a rangeset > x86/iommu: cleanup unused functions > > xen/arch/x86/cpu-policy.c | 2 +- > xen/arch/x86/domain.c | 21 ++ > xen/arch/x86/hvm/io.c | 15 +- Paul, for the changes to this file, any chance of an ack for patches 4 and 6? Thanks, Jan > xen/arch/x86/include/asm/domain.h | 3 + > xen/arch/x86/include/asm/hvm/io.h | 4 +- > xen/arch/x86/include/asm/paging.h | 22 -- > xen/arch/x86/include/asm/setup.h | 2 +- > xen/arch/x86/setup.c | 81 +++--- > xen/arch/x86/tboot.c | 2 +- > xen/drivers/passthrough/amd/pci_amd_iommu.c | 20 +- > xen/drivers/passthrough/x86/iommu.c | 271 +++++++++++++------- > 11 files changed, 262 insertions(+), 181 deletions(-) >
Hello, The aim of the series is to reduce boot time setup of IOMMU page tables for dom0. First and second patches are a pre-req, as further patches can end up attempting to create maps above the max RAM address, and hence without properly setting the IOMMU page tables levels those attempts to map would fail. Last 4 patches rework the hardware domain IOMMU setup to use a rangeset instead of iterating over all addresses up to the max RAM page. See patch 5/6 for performance figures. Thanks, Roger. Roger Pau Monne (6): x86/p2m: move and rename paging_max_paddr_bits() amd-vi: set IOMMU page table levels based on guest reported paddr width x86/iommu: introduce a rangeset to perform hwdom IOMMU setup x86/iommu: remove regions not to be mapped x86/iommu: switch hwdom IOMMU to use a rangeset x86/iommu: cleanup unused functions xen/arch/x86/cpu-policy.c | 2 +- xen/arch/x86/domain.c | 21 ++ xen/arch/x86/hvm/io.c | 15 +- xen/arch/x86/include/asm/domain.h | 3 + xen/arch/x86/include/asm/hvm/io.h | 4 +- xen/arch/x86/include/asm/paging.h | 22 -- xen/arch/x86/include/asm/setup.h | 2 +- xen/arch/x86/setup.c | 81 +++--- xen/arch/x86/tboot.c | 2 +- xen/drivers/passthrough/amd/pci_amd_iommu.c | 20 +- xen/drivers/passthrough/x86/iommu.c | 271 +++++++++++++------- 11 files changed, 262 insertions(+), 181 deletions(-)