| Message ID | 20231026103104.1686921-1-zhenzhong.duan@intel.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | vfio: Adopt iommufd | expand |
Zhenzhong Duan <zhenzhong.duan@intel.com> writes: > Hi, > > Thanks all for giving guides and comments on previous series, here is > the v3 of pure iommufd support part. > > Based on Cédric's suggestion, this series includes an effort to remove > spapr code from container.c, now all spapr functions are moved to spapr.c > or spapr_pci_vfio.c, but there are still a few trival check on > VFIO_SPAPR_TCE_*_IOMMU which I am not sure if deserved to introduce many > callbacks and duplicate code just to remove them. Some functions are moved > to spapr.c instead of spapr_pci_vfio.c to avoid compile issue because > spapr_pci_vfio.c is arch specific, or else we need to introduce stub > functions to those spapr functions moved. [...] > qemu code: https://github.com/yiliu1765/qemu/commits/zhenzhong/iommufd_cdev_v3 > Based on vfio-next, commit id: fd0e1c8bc1 I fetched this, and get several compile errors with Clang (but not with GCC): FAILED: libqemu-x86_64-softmmu.fa.p/hw_vfio_common.c.o clang -m64 -mcx16 -Ilibqemu-x86_64-softmmu.fa.p -I. -I.. -Itarget/i386 -I../target/i386 -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 -I/usr/include/capstone -I/usr/include/spice-server -I/usr/include/spice-1 -I/usr/include/cacard -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-4 -I/usr/include/nss3 -I/usr/include/nspr4 -I/usr/include/PCSC -fcolor-diagnostics -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -fstack-protector-strong -Wundef -Wwrite-strings -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wmissing-format-attribute -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type-not-at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem linux-headers -iquote . -iquote /work/armbru/qemu -iquote /work/armbru/qemu/include -iquote /work/armbru/qemu/host/include/x86_64 -iquote /work/armbru/qemu/host/include/generic -iquote /work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno-common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter -fsanitize=fuzzer-no-link -fPIE -isystem../linux-headers -isystemlinux-headers -DNEED_CPU_H '-DCONFIG_TARGET="x86_64-softmmu-config-target.h"' '-DCONFIG_DEVICES="x86_64-softmmu-config-devices.h"' -MD -MQ libqemu-x86_64-softmmu.fa.p/hw_vfio_common.c.o -MF libqemu-x86_64-softmmu.fa.p/hw_vfio_common.c.o.d -o libqemu-x86_64-softmmu.fa.p/hw_vfio_common.c.o -c ../hw/vfio/common.c ../hw/vfio/common.c:682:40: error: variable 'hostwin' is uninitialized when used here [-Werror,-Wuninitialized] hwaddr pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; ^~~~~~~ ../hw/vfio/common.c:578:31: note: initialize the variable 'hostwin' to silence this warning VFIOHostDMAWindow *hostwin; ^ = NULL ../hw/vfio/common.c:785:33: error: variable 'hostwin' is uninitialized when used here [-Werror,-Wuninitialized] pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; ^~~~~~~ ../hw/vfio/common.c:783:35: note: initialize the variable 'hostwin' to silence this warning VFIOHostDMAWindow *hostwin; ^ = NULL 2 errors generated. FAILED: tests/unit/test-resv-mem.p/test-resv-mem.c.o clang -m64 -mcx16 -Itests/unit/test-resv-mem.p -Itests/unit -I../tests/unit -I. -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-4 -fcolor-diagnostics -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -fstack-protector-strong -Wundef -Wwrite-strings -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wmissing-format-attribute -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type-not-at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem linux-headers -iquote . -iquote /work/armbru/qemu -iquote /work/armbru/qemu/include -iquote /work/armbru/qemu/host/include/x86_64 -iquote /work/armbru/qemu/host/include/generic -iquote /work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno-common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter -fsanitize=fuzzer-no-link -fPIE -MD -MQ tests/unit/test-resv-mem.p/test-resv-mem.c.o -MF tests/unit/test-resv-mem.p/test-resv-mem.c.o.d -o tests/unit/test-resv-mem.p/test-resv-mem.c.o -c ../tests/unit/test-resv-mem.c ../tests/unit/test-resv-mem.c:42:9: error: variable 'i' set but not used [-Werror,-Wunused-but-set-variable] int i = 0; ^ 1 error generated. Delete @i, please.
Hi Markus, >-----Original Message----- >From: Markus Armbruster <armbru@redhat.com> >Sent: Thursday, October 26, 2023 9:27 PM >Subject: Re: [PATCH v3 00/37] vfio: Adopt iommufd > >Zhenzhong Duan <zhenzhong.duan@intel.com> writes: > >> Hi, >> >> Thanks all for giving guides and comments on previous series, here is >> the v3 of pure iommufd support part. >> >> Based on Cédric's suggestion, this series includes an effort to remove >> spapr code from container.c, now all spapr functions are moved to spapr.c >> or spapr_pci_vfio.c, but there are still a few trival check on >> VFIO_SPAPR_TCE_*_IOMMU which I am not sure if deserved to introduce many >> callbacks and duplicate code just to remove them. Some functions are moved >> to spapr.c instead of spapr_pci_vfio.c to avoid compile issue because >> spapr_pci_vfio.c is arch specific, or else we need to introduce stub >> functions to those spapr functions moved. > >[...] > >> qemu code: >https://github.com/yiliu1765/qemu/commits/zhenzhong/iommufd_cdev_v3 >> Based on vfio-next, commit id: fd0e1c8bc1 > >I fetched this, and get several compile errors with Clang (but not with >GCC): > > FAILED: libqemu-x86_64-softmmu.fa.p/hw_vfio_common.c.o > clang -m64 -mcx16 -Ilibqemu-x86_64-softmmu.fa.p -I. -I.. -Itarget/i386 - >I../target/i386 -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 - >I/usr/include/capstone -I/usr/include/spice-server -I/usr/include/spice-1 - >I/usr/include/cacard -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include - >I/usr/include/sysprof-4 -I/usr/include/nss3 -I/usr/include/nspr4 - >I/usr/include/PCSC -fcolor-diagnostics -Wall -Winvalid-pch -Werror -std=gnu11 - >O2 -g -fstack-protector-strong -Wundef -Wwrite-strings -Wmissing-prototypes - >Wstrict-prototypes -Wredundant-decls -Wold-style-definition -Wtype-limits - >Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body >-Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wmissing-format- >attribute -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift- >negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno- >tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type-not- >at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem >linux-headers -iquote . -iquote /work/armbru/qemu -iquote >/work/armbru/qemu/include -iquote /work/armbru/qemu/host/include/x86_64 - >iquote /work/armbru/qemu/host/include/generic -iquote >/work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE - >D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno- >common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter - >fsanitize=fuzzer-no-link -fPIE -isystem../linux-headers -isystemlinux-headers - >DNEED_CPU_H '-DCONFIG_TARGET="x86_64-softmmu-config-target.h"' '- >DCONFIG_DEVICES="x86_64-softmmu-config-devices.h"' -MD -MQ libqemu- >x86_64-softmmu.fa.p/hw_vfio_common.c.o -MF libqemu-x86_64- >softmmu.fa.p/hw_vfio_common.c.o.d -o libqemu-x86_64- >softmmu.fa.p/hw_vfio_common.c.o -c ../hw/vfio/common.c > ../hw/vfio/common.c:682:40: error: variable 'hostwin' is uninitialized when >used here [-Werror,-Wuninitialized] > hwaddr pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; > ^~~~~~~ > ../hw/vfio/common.c:578:31: note: initialize the variable 'hostwin' to silence >this warning > VFIOHostDMAWindow *hostwin; > ^ > = NULL > ../hw/vfio/common.c:785:33: error: variable 'hostwin' is uninitialized when >used here [-Werror,-Wuninitialized] > pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; > ^~~~~~~ > ../hw/vfio/common.c:783:35: note: initialize the variable 'hostwin' to silence >this warning > VFIOHostDMAWindow *hostwin; > ^ > = NULL > 2 errors generated. > FAILED: tests/unit/test-resv-mem.p/test-resv-mem.c.o > clang -m64 -mcx16 -Itests/unit/test-resv-mem.p -Itests/unit -I../tests/unit -I. - >Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include - >I/usr/include/sysprof-4 -fcolor-diagnostics -Wall -Winvalid-pch -Werror - >std=gnu11 -O2 -g -fstack-protector-strong -Wundef -Wwrite-strings -Wmissing- >prototypes -Wstrict-prototypes -Wredundant-decls -Wold-style-definition - >Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers - >Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined - >Wmissing-format-attribute -Wno-initializer-overrides -Wno-missing-include-dirs - >Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno- >tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type-not- >at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem >linux-headers -iquote . -iquote /work/armbru/qemu -iquote >/work/armbru/qemu/include -iquote /work/armbru/qemu/host/include/x86_64 - >iquote /work/armbru/qemu/host/include/generic -iquote >/work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE - >D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno- >common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter - >fsanitize=fuzzer-no-link -fPIE -MD -MQ tests/unit/test-resv-mem.p/test-resv- >mem.c.o -MF tests/unit/test-resv-mem.p/test-resv-mem.c.o.d -o tests/unit/test- >resv-mem.p/test-resv-mem.c.o -c ../tests/unit/test-resv-mem.c > ../tests/unit/test-resv-mem.c:42:9: error: variable 'i' set but not used [- >Werror,-Wunused-but-set-variable] > int i = 0; > ^ > 1 error generated. > >Delete @i, please. Thanks for your report, I'll fix it and build with both compilers next time. About second error, I'll send a separate patch as it's unrelated to this series. BRs. Zhenzhong
On 10/27/23 08:17, Duan, Zhenzhong wrote: > Hi Markus, > >> -----Original Message----- >> From: Markus Armbruster <armbru@redhat.com> >> Sent: Thursday, October 26, 2023 9:27 PM >> Subject: Re: [PATCH v3 00/37] vfio: Adopt iommufd >> >> Zhenzhong Duan <zhenzhong.duan@intel.com> writes: >> >>> Hi, >>> >>> Thanks all for giving guides and comments on previous series, here is >>> the v3 of pure iommufd support part. >>> >>> Based on Cédric's suggestion, this series includes an effort to remove >>> spapr code from container.c, now all spapr functions are moved to spapr.c >>> or spapr_pci_vfio.c, but there are still a few trival check on >>> VFIO_SPAPR_TCE_*_IOMMU which I am not sure if deserved to introduce many >>> callbacks and duplicate code just to remove them. Some functions are moved >>> to spapr.c instead of spapr_pci_vfio.c to avoid compile issue because >>> spapr_pci_vfio.c is arch specific, or else we need to introduce stub >>> functions to those spapr functions moved. >> >> [...] >> >>> qemu code: >> https://github.com/yiliu1765/qemu/commits/zhenzhong/iommufd_cdev_v3 >>> Based on vfio-next, commit id: fd0e1c8bc1 >> >> I fetched this, and get several compile errors with Clang (but not with >> GCC): >> >> FAILED: libqemu-x86_64-softmmu.fa.p/hw_vfio_common.c.o >> clang -m64 -mcx16 -Ilibqemu-x86_64-softmmu.fa.p -I. -I.. -Itarget/i386 - >> I../target/i386 -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 - >> I/usr/include/capstone -I/usr/include/spice-server -I/usr/include/spice-1 - >> I/usr/include/cacard -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include - >> I/usr/include/sysprof-4 -I/usr/include/nss3 -I/usr/include/nspr4 - >> I/usr/include/PCSC -fcolor-diagnostics -Wall -Winvalid-pch -Werror -std=gnu11 - >> O2 -g -fstack-protector-strong -Wundef -Wwrite-strings -Wmissing-prototypes - >> Wstrict-prototypes -Wredundant-decls -Wold-style-definition -Wtype-limits - >> Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body >> -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wmissing-format- >> attribute -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift- >> negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno- >> tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type-not- >> at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem >> linux-headers -iquote . -iquote /work/armbru/qemu -iquote >> /work/armbru/qemu/include -iquote /work/armbru/qemu/host/include/x86_64 - >> iquote /work/armbru/qemu/host/include/generic -iquote >> /work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE - >> D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno- >> common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter - >> fsanitize=fuzzer-no-link -fPIE -isystem../linux-headers -isystemlinux-headers - >> DNEED_CPU_H '-DCONFIG_TARGET="x86_64-softmmu-config-target.h"' '- >> DCONFIG_DEVICES="x86_64-softmmu-config-devices.h"' -MD -MQ libqemu- >> x86_64-softmmu.fa.p/hw_vfio_common.c.o -MF libqemu-x86_64- >> softmmu.fa.p/hw_vfio_common.c.o.d -o libqemu-x86_64- >> softmmu.fa.p/hw_vfio_common.c.o -c ../hw/vfio/common.c >> ../hw/vfio/common.c:682:40: error: variable 'hostwin' is uninitialized when >> used here [-Werror,-Wuninitialized] >> hwaddr pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; >> ^~~~~~~ >> ../hw/vfio/common.c:578:31: note: initialize the variable 'hostwin' to silence >> this warning >> VFIOHostDMAWindow *hostwin; >> ^ >> = NULL >> ../hw/vfio/common.c:785:33: error: variable 'hostwin' is uninitialized when >> used here [-Werror,-Wuninitialized] >> pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; >> ^~~~~~~ >> ../hw/vfio/common.c:783:35: note: initialize the variable 'hostwin' to silence >> this warning >> VFIOHostDMAWindow *hostwin; >> ^ >> = NULL >> 2 errors generated. >> FAILED: tests/unit/test-resv-mem.p/test-resv-mem.c.o >> clang -m64 -mcx16 -Itests/unit/test-resv-mem.p -Itests/unit -I../tests/unit -I. - >> Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include - >> I/usr/include/sysprof-4 -fcolor-diagnostics -Wall -Winvalid-pch -Werror - >> std=gnu11 -O2 -g -fstack-protector-strong -Wundef -Wwrite-strings -Wmissing- >> prototypes -Wstrict-prototypes -Wredundant-decls -Wold-style-definition - >> Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers - >> Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined - >> Wmissing-format-attribute -Wno-initializer-overrides -Wno-missing-include-dirs - >> Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno- >> tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type-not- >> at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem >> linux-headers -iquote . -iquote /work/armbru/qemu -iquote >> /work/armbru/qemu/include -iquote /work/armbru/qemu/host/include/x86_64 - >> iquote /work/armbru/qemu/host/include/generic -iquote >> /work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE - >> D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno- >> common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter - >> fsanitize=fuzzer-no-link -fPIE -MD -MQ tests/unit/test-resv-mem.p/test-resv- >> mem.c.o -MF tests/unit/test-resv-mem.p/test-resv-mem.c.o.d -o tests/unit/test- >> resv-mem.p/test-resv-mem.c.o -c ../tests/unit/test-resv-mem.c >> ../tests/unit/test-resv-mem.c:42:9: error: variable 'i' set but not used [- >> Werror,-Wunused-but-set-variable] >> int i = 0; >> ^ >> 1 error generated. >> >> Delete @i, please. > > Thanks for your report, I'll fix it and build with both compilers next time. a compile on a fedora rawhide also reports : ../hw/vfio/iommufd.c: In function ‘vfio_get_info_iova_range’: ../hw/vfio/iommufd.c:370:27: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] 370 | info->allowed_iovas = (uint64_t)(info + 1); | ^ ../hw/vfio/iommufd.c:377:19: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] 377 | iova_ranges = (struct iommu_iova_range *)info->allowed_iovas; | ^ cc1: all warnings being treated as errors > About second error, I'll send a separate patch as it's unrelated to this series. Since this is a big series, I suggest that you take this patch in your build environment, diff --git a/meson.build b/meson.build index 72a57288a026325d5ff753131c037e99f6f35c1a..c946cbef5b29e23475dc4cf345655e0466cbfade 100644 --- a/meson.build +++ b/meson.build @@ -462,6 +462,9 @@ warn_flags = [ '-Wno-tautological-type-limit-compare', '-Wno-psabi', '-Wno-gnu-variable-sized-type-not-at-end', + '-Wshadow=local', + '-Wno-error=shadow=local', + '-Wno-error=shadow=compatible-local', ] if targetos != 'darwin' Thanks, C.
Hi Cédric, >-----Original Message----- >From: Cédric Le Goater <clg@redhat.com> >Sent: Friday, October 27, 2023 3:46 PM >Subject: Re: [PATCH v3 00/37] vfio: Adopt iommufd > >On 10/27/23 08:17, Duan, Zhenzhong wrote: >> Hi Markus, >> >>> -----Original Message----- >>> From: Markus Armbruster <armbru@redhat.com> >>> Sent: Thursday, October 26, 2023 9:27 PM >>> Subject: Re: [PATCH v3 00/37] vfio: Adopt iommufd >>> >>> Zhenzhong Duan <zhenzhong.duan@intel.com> writes: >>> >>>> Hi, >>>> >>>> Thanks all for giving guides and comments on previous series, here is >>>> the v3 of pure iommufd support part. >>>> >>>> Based on Cédric's suggestion, this series includes an effort to remove >>>> spapr code from container.c, now all spapr functions are moved to spapr.c >>>> or spapr_pci_vfio.c, but there are still a few trival check on >>>> VFIO_SPAPR_TCE_*_IOMMU which I am not sure if deserved to introduce >many >>>> callbacks and duplicate code just to remove them. Some functions are moved >>>> to spapr.c instead of spapr_pci_vfio.c to avoid compile issue because >>>> spapr_pci_vfio.c is arch specific, or else we need to introduce stub >>>> functions to those spapr functions moved. >>> >>> [...] >>> >>>> qemu code: >>> https://github.com/yiliu1765/qemu/commits/zhenzhong/iommufd_cdev_v3 >>>> Based on vfio-next, commit id: fd0e1c8bc1 >>> >>> I fetched this, and get several compile errors with Clang (but not with >>> GCC): >>> >>> FAILED: libqemu-x86_64-softmmu.fa.p/hw_vfio_common.c.o >>> clang -m64 -mcx16 -Ilibqemu-x86_64-softmmu.fa.p -I. -I.. -Itarget/i386 - >>> I../target/i386 -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 - >>> I/usr/include/capstone -I/usr/include/spice-server -I/usr/include/spice-1 - >>> I/usr/include/cacard -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include - >>> I/usr/include/sysprof-4 -I/usr/include/nss3 -I/usr/include/nspr4 - >>> I/usr/include/PCSC -fcolor-diagnostics -Wall -Winvalid-pch -Werror - >std=gnu11 - >>> O2 -g -fstack-protector-strong -Wundef -Wwrite-strings -Wmissing- >prototypes - >>> Wstrict-prototypes -Wredundant-decls -Wold-style-definition -Wtype-limits - >>> Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty- >body >>> -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wmissing-format- >>> attribute -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift- >>> negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno- >>> tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type- >not- >>> at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem >>> linux-headers -iquote . -iquote /work/armbru/qemu -iquote >>> /work/armbru/qemu/include -iquote >/work/armbru/qemu/host/include/x86_64 - >>> iquote /work/armbru/qemu/host/include/generic -iquote >>> /work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE - >>> D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno- >>> common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter - >>> fsanitize=fuzzer-no-link -fPIE -isystem../linux-headers -isystemlinux-headers - >>> DNEED_CPU_H '-DCONFIG_TARGET="x86_64-softmmu-config-target.h"' '- >>> DCONFIG_DEVICES="x86_64-softmmu-config-devices.h"' -MD -MQ libqemu- >>> x86_64-softmmu.fa.p/hw_vfio_common.c.o -MF libqemu-x86_64- >>> softmmu.fa.p/hw_vfio_common.c.o.d -o libqemu-x86_64- >>> softmmu.fa.p/hw_vfio_common.c.o -c ../hw/vfio/common.c >>> ../hw/vfio/common.c:682:40: error: variable 'hostwin' is uninitialized when >>> used here [-Werror,-Wuninitialized] >>> hwaddr pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; >>> ^~~~~~~ >>> ../hw/vfio/common.c:578:31: note: initialize the variable 'hostwin' to >silence >>> this warning >>> VFIOHostDMAWindow *hostwin; >>> ^ >>> = NULL >>> ../hw/vfio/common.c:785:33: error: variable 'hostwin' is uninitialized when >>> used here [-Werror,-Wuninitialized] >>> pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; >>> ^~~~~~~ >>> ../hw/vfio/common.c:783:35: note: initialize the variable 'hostwin' to >silence >>> this warning >>> VFIOHostDMAWindow *hostwin; >>> ^ >>> = NULL >>> 2 errors generated. >>> FAILED: tests/unit/test-resv-mem.p/test-resv-mem.c.o >>> clang -m64 -mcx16 -Itests/unit/test-resv-mem.p -Itests/unit -I../tests/unit -I. >- >>> Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include >- >>> I/usr/include/sysprof-4 -fcolor-diagnostics -Wall -Winvalid-pch -Werror - >>> std=gnu11 -O2 -g -fstack-protector-strong -Wundef -Wwrite-strings - >Wmissing- >>> prototypes -Wstrict-prototypes -Wredundant-decls -Wold-style-definition - >>> Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored- >qualifiers - >>> Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined - >>> Wmissing-format-attribute -Wno-initializer-overrides -Wno-missing-include- >dirs - >>> Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition - >Wno- >>> tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type- >not- >>> at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem >>> linux-headers -iquote . -iquote /work/armbru/qemu -iquote >>> /work/armbru/qemu/include -iquote >/work/armbru/qemu/host/include/x86_64 - >>> iquote /work/armbru/qemu/host/include/generic -iquote >>> /work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE - >>> D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno- >>> common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter - >>> fsanitize=fuzzer-no-link -fPIE -MD -MQ tests/unit/test-resv-mem.p/test-resv- >>> mem.c.o -MF tests/unit/test-resv-mem.p/test-resv-mem.c.o.d -o >tests/unit/test- >>> resv-mem.p/test-resv-mem.c.o -c ../tests/unit/test-resv-mem.c >>> ../tests/unit/test-resv-mem.c:42:9: error: variable 'i' set but not used [- >>> Werror,-Wunused-but-set-variable] >>> int i = 0; >>> ^ >>> 1 error generated. >>> >>> Delete @i, please. >> >> Thanks for your report, I'll fix it and build with both compilers next time. > >a compile on a fedora rawhide also reports : > >../hw/vfio/iommufd.c: In function ‘vfio_get_info_iova_range’: >../hw/vfio/iommufd.c:370:27: error: cast from pointer to integer of different size >[-Werror=pointer-to-int-cast] > 370 | info->allowed_iovas = (uint64_t)(info + 1); > | ^ >../hw/vfio/iommufd.c:377:19: error: cast to pointer from integer of different size >[-Werror=int-to-pointer-cast] > 377 | iova_ranges = (struct iommu_iova_range *)info->allowed_iovas; > | ^ >cc1: all warnings being treated as errors I failed to understand this warning, is your env a 32bit fedora? > > >> About second error, I'll send a separate patch as it's unrelated to this series. > > >Since this is a big series, I suggest that you take this patch in your build >environment, Got it, will do, thanks for your suggestions. BRs. Zhenzhong > > >diff --git a/meson.build b/meson.build >index >72a57288a026325d5ff753131c037e99f6f35c1a..c946cbef5b29e23475dc4cf3456 >55e0466cbfade 100644 >--- a/meson.build >+++ b/meson.build >@@ -462,6 +462,9 @@ warn_flags = [ > '-Wno-tautological-type-limit-compare', > '-Wno-psabi', > '-Wno-gnu-variable-sized-type-not-at-end', >+ '-Wshadow=local', >+ '-Wno-error=shadow=local', >+ '-Wno-error=shadow=compatible-local', > ] > > if targetos != 'darwin' > > >Thanks, > >C.
On 10/27/23 10:16, Duan, Zhenzhong wrote: > Hi Cédric, > >> -----Original Message----- >> From: Cédric Le Goater <clg@redhat.com> >> Sent: Friday, October 27, 2023 3:46 PM >> Subject: Re: [PATCH v3 00/37] vfio: Adopt iommufd >> >> On 10/27/23 08:17, Duan, Zhenzhong wrote: >>> Hi Markus, >>> >>>> -----Original Message----- >>>> From: Markus Armbruster <armbru@redhat.com> >>>> Sent: Thursday, October 26, 2023 9:27 PM >>>> Subject: Re: [PATCH v3 00/37] vfio: Adopt iommufd >>>> >>>> Zhenzhong Duan <zhenzhong.duan@intel.com> writes: >>>> >>>>> Hi, >>>>> >>>>> Thanks all for giving guides and comments on previous series, here is >>>>> the v3 of pure iommufd support part. >>>>> >>>>> Based on Cédric's suggestion, this series includes an effort to remove >>>>> spapr code from container.c, now all spapr functions are moved to spapr.c >>>>> or spapr_pci_vfio.c, but there are still a few trival check on >>>>> VFIO_SPAPR_TCE_*_IOMMU which I am not sure if deserved to introduce >> many >>>>> callbacks and duplicate code just to remove them. Some functions are moved >>>>> to spapr.c instead of spapr_pci_vfio.c to avoid compile issue because >>>>> spapr_pci_vfio.c is arch specific, or else we need to introduce stub >>>>> functions to those spapr functions moved. >>>> >>>> [...] >>>> >>>>> qemu code: >>>> https://github.com/yiliu1765/qemu/commits/zhenzhong/iommufd_cdev_v3 >>>>> Based on vfio-next, commit id: fd0e1c8bc1 >>>> >>>> I fetched this, and get several compile errors with Clang (but not with >>>> GCC): >>>> >>>> FAILED: libqemu-x86_64-softmmu.fa.p/hw_vfio_common.c.o >>>> clang -m64 -mcx16 -Ilibqemu-x86_64-softmmu.fa.p -I. -I.. -Itarget/i386 - >>>> I../target/i386 -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 - >>>> I/usr/include/capstone -I/usr/include/spice-server -I/usr/include/spice-1 - >>>> I/usr/include/cacard -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include - >>>> I/usr/include/sysprof-4 -I/usr/include/nss3 -I/usr/include/nspr4 - >>>> I/usr/include/PCSC -fcolor-diagnostics -Wall -Winvalid-pch -Werror - >> std=gnu11 - >>>> O2 -g -fstack-protector-strong -Wundef -Wwrite-strings -Wmissing- >> prototypes - >>>> Wstrict-prototypes -Wredundant-decls -Wold-style-definition -Wtype-limits - >>>> Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty- >> body >>>> -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wmissing-format- >>>> attribute -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift- >>>> negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno- >>>> tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type- >> not- >>>> at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem >>>> linux-headers -iquote . -iquote /work/armbru/qemu -iquote >>>> /work/armbru/qemu/include -iquote >> /work/armbru/qemu/host/include/x86_64 - >>>> iquote /work/armbru/qemu/host/include/generic -iquote >>>> /work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE - >>>> D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno- >>>> common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter - >>>> fsanitize=fuzzer-no-link -fPIE -isystem../linux-headers -isystemlinux-headers - >>>> DNEED_CPU_H '-DCONFIG_TARGET="x86_64-softmmu-config-target.h"' '- >>>> DCONFIG_DEVICES="x86_64-softmmu-config-devices.h"' -MD -MQ libqemu- >>>> x86_64-softmmu.fa.p/hw_vfio_common.c.o -MF libqemu-x86_64- >>>> softmmu.fa.p/hw_vfio_common.c.o.d -o libqemu-x86_64- >>>> softmmu.fa.p/hw_vfio_common.c.o -c ../hw/vfio/common.c >>>> ../hw/vfio/common.c:682:40: error: variable 'hostwin' is uninitialized when >>>> used here [-Werror,-Wuninitialized] >>>> hwaddr pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; >>>> ^~~~~~~ >>>> ../hw/vfio/common.c:578:31: note: initialize the variable 'hostwin' to >> silence >>>> this warning >>>> VFIOHostDMAWindow *hostwin; >>>> ^ >>>> = NULL >>>> ../hw/vfio/common.c:785:33: error: variable 'hostwin' is uninitialized when >>>> used here [-Werror,-Wuninitialized] >>>> pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1; >>>> ^~~~~~~ >>>> ../hw/vfio/common.c:783:35: note: initialize the variable 'hostwin' to >> silence >>>> this warning >>>> VFIOHostDMAWindow *hostwin; >>>> ^ >>>> = NULL >>>> 2 errors generated. >>>> FAILED: tests/unit/test-resv-mem.p/test-resv-mem.c.o >>>> clang -m64 -mcx16 -Itests/unit/test-resv-mem.p -Itests/unit -I../tests/unit -I. >> - >>>> Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include >> - >>>> I/usr/include/sysprof-4 -fcolor-diagnostics -Wall -Winvalid-pch -Werror - >>>> std=gnu11 -O2 -g -fstack-protector-strong -Wundef -Wwrite-strings - >> Wmissing- >>>> prototypes -Wstrict-prototypes -Wredundant-decls -Wold-style-definition - >>>> Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored- >> qualifiers - >>>> Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined - >>>> Wmissing-format-attribute -Wno-initializer-overrides -Wno-missing-include- >> dirs - >>>> Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition - >> Wno- >>>> tautological-type-limit-compare -Wno-psabi -Wno-gnu-variable-sized-type- >> not- >>>> at-end -Wthread-safety -isystem /work/armbru/qemu/linux-headers -isystem >>>> linux-headers -iquote . -iquote /work/armbru/qemu -iquote >>>> /work/armbru/qemu/include -iquote >> /work/armbru/qemu/host/include/x86_64 - >>>> iquote /work/armbru/qemu/host/include/generic -iquote >>>> /work/armbru/qemu/tcg/i386 -pthread -D_GNU_SOURCE - >>>> D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno- >>>> common -fwrapv -fsanitize-coverage-allowlist=instrumentation-filter - >>>> fsanitize=fuzzer-no-link -fPIE -MD -MQ tests/unit/test-resv-mem.p/test-resv- >>>> mem.c.o -MF tests/unit/test-resv-mem.p/test-resv-mem.c.o.d -o >> tests/unit/test- >>>> resv-mem.p/test-resv-mem.c.o -c ../tests/unit/test-resv-mem.c >>>> ../tests/unit/test-resv-mem.c:42:9: error: variable 'i' set but not used [- >>>> Werror,-Wunused-but-set-variable] >>>> int i = 0; >>>> ^ >>>> 1 error generated. >>>> >>>> Delete @i, please. >>> >>> Thanks for your report, I'll fix it and build with both compilers next time. >> >> a compile on a fedora rawhide also reports : >> >> ../hw/vfio/iommufd.c: In function ‘vfio_get_info_iova_range’: >> ../hw/vfio/iommufd.c:370:27: error: cast from pointer to integer of different size >> [-Werror=pointer-to-int-cast] >> 370 | info->allowed_iovas = (uint64_t)(info + 1); >> | ^ >> ../hw/vfio/iommufd.c:377:19: error: cast to pointer from integer of different size >> [-Werror=int-to-pointer-cast] >> 377 | iova_ranges = (struct iommu_iova_range *)info->allowed_iovas; >> | ^ >> cc1: all warnings being treated as errors > > I failed to understand this warning, is your env a 32bit fedora? it's not a rawhide but a 32bit indeed. Thanks, C. > >> >> >>> About second error, I'll send a separate patch as it's unrelated to this series. >> >> >> Since this is a big series, I suggest that you take this patch in your build >> environment, > > Got it, will do, thanks for your suggestions. > > BRs. > Zhenzhong > >> >> >> diff --git a/meson.build b/meson.build >> index >> 72a57288a026325d5ff753131c037e99f6f35c1a..c946cbef5b29e23475dc4cf3456 >> 55e0466cbfade 100644 >> --- a/meson.build >> +++ b/meson.build >> @@ -462,6 +462,9 @@ warn_flags = [ >> '-Wno-tautological-type-limit-compare', >> '-Wno-psabi', >> '-Wno-gnu-variable-sized-type-not-at-end', >> + '-Wshadow=local', >> + '-Wno-error=shadow=local', >> + '-Wno-error=shadow=compatible-local', >> ] >> >> if targetos != 'darwin' >> >> >> Thanks, >> >> C. >
Hi, Thanks all for giving guides and comments on previous series, here is the v3 of pure iommufd support part. Based on Cédric's suggestion, this series includes an effort to remove spapr code from container.c, now all spapr functions are moved to spapr.c or spapr_pci_vfio.c, but there are still a few trival check on VFIO_SPAPR_TCE_*_IOMMU which I am not sure if deserved to introduce many callbacks and duplicate code just to remove them. Some functions are moved to spapr.c instead of spapr_pci_vfio.c to avoid compile issue because spapr_pci_vfio.c is arch specific, or else we need to introduce stub functions to those spapr functions moved. PATCH 1-5: Move spapr functions to spapr*.c PATCH 6-18: Abstract out base container PATCH 19-22: Introduce sparpr container and its specific interface PATCH 23: Add --enable/--disable-iommufd config support PATCH 24: Introduce iommufd object PATCH 25-29: add IOMMUFD container and cdev support PATCH 30-37: fd passing for IOMMUFD object and cdev We have done wide test with different combinations, e.g: - PCI device were tested - FD passing and hot reset with some trick. - device hotplug test with legacy and iommufd backends - with or without vIOMMU for legacy and iommufd backends - divices linked to different iommufds - VFIO migration with a E800 net card(no dirty sync support) passthrough - platform, ccw and ap were only compile-tested due to environment limit Given some iommufd kernel limitations, the iommufd backend is not yet fully on par with the legacy backend w.r.t. features like: - p2p mappings (you will see related error traces) - dirty page sync - and etc. qemu code: https://github.com/yiliu1765/qemu/commits/zhenzhong/iommufd_cdev_v3 Based on vfio-next, commit id: fd0e1c8bc1 -------------------------------------------------------------------------- Below are some background and graph about the design: With the introduction of iommufd, the Linux kernel provides a generic interface for userspace drivers to propagate their DMA mappings to kernel for assigned devices. This series does the porting of the VFIO devices onto the /dev/iommu uapi and let it coexist with the legacy implementation. At QEMU level, interactions with the /dev/iommu are abstracted by a new iommufd object (compiled in with the CONFIG_IOMMUFD option). Any QEMU device (e.g. vfio device) wishing to use /dev/iommu must be linked with an iommufd object. In this series, the vfio-pci device is granted with such capability (other VFIO devices are not yet ready): It gets a new optional parameter named iommufd which allows to pass an iommufd object: -object iommufd,id=iommufd0 -device vfio-pci,host=0000:02:00.0,iommufd=iommufd0 Note the /dev/iommu and vfio cdev can be externally opened by a management layer. In such a case the fd is passed: -object iommufd,id=iommufd0,fd=22 -device vfio-pci,iommufd=iommufd0,fd=23 If the fd parameter is not passed, the fd is opened by QEMU. See https://www.mail-archive.com/qemu-devel@nongnu.org/msg937155.html for detailed discuss on this requirement. If no iommufd option is passed to the vfio-pci device, iommufd is not used and the end-user gets the behavior based on the legacy vfio iommu interfaces: -device vfio-pci,host=0000:02:00.0 While the legacy kernel interface is group-centric, the new iommufd interface is device-centric, relying on device fd and iommufd. To support both interfaces in the QEMU VFIO device we reworked the vfio container abstraction so that the generic VFIO code can use either backend. The VFIOContainer object becomes a base object derived into a) the legacy VFIO container and b) the new iommufd based container. The base object implements generic code such as code related to memory_listener and address space management whereas the derived objects implement callbacks specific to either BE, legacy and iommufd. Indeed each backend has its own way to setup secure context and dma management interface. The below diagram shows how it looks like with both BEs. VFIO AddressSpace/Memory +-------+ +----------+ +-----+ +-----+ | pci | | platform | | ap | | ccw | +---+---+ +----+-----+ +--+--+ +--+--+ +----------------------+ | | | | | AddressSpace | | | | | +------------+---------+ +---V-----------V-----------V--------V----+ / | VFIOAddressSpace | <------------+ | | | MemoryListener | VFIOContainer list | +-------+----------------------------+----+ | | | | +-------V------+ +--------V----------+ | iommufd | | vfio legacy | | container | | container | +-------+------+ +--------+----------+ | | | /dev/iommu | /dev/vfio/vfio | /dev/vfio/devices/vfioX | /dev/vfio/$group_id Userspace | | ============+============================+=========================== Kernel | device fd | +---------------+ | group/container fd | (BIND_IOMMUFD | | (SET_CONTAINER/SET_IOMMU) | ATTACH_IOAS) | | device fd | | | | +-------V------------V-----------------+ iommufd | | vfio | (map/unmap | +---------+--------------------+-------+ ioas_copy) | | | map/unmap | | | +------V------+ +-----V------+ +------V--------+ | iommfd core | | device | | vfio iommu | +-------------+ +------------+ +---------------+ [Secure Context setup] - iommufd BE: uses device fd and iommufd to setup secure context (bind_iommufd, attach_ioas) - vfio legacy BE: uses group fd and container fd to setup secure context (set_container, set_iommu) [Device access] - iommufd BE: device fd is opened through /dev/vfio/devices/vfioX - vfio legacy BE: device fd is retrieved from group fd ioctl [DMA Mapping flow] 1. VFIOAddressSpace receives MemoryRegion add/del via MemoryListener 2. VFIO populates DMA map/unmap via the container BEs *) iommufd BE: uses iommufd *) vfio legacy BE: uses container fd Changelog: v3: - Rename base container as VFIOContainerBase and legacy container as container (Cédric) - Drop VFIO_IOMMU_BACKEND_OPS class and use struct instead (Cédric) - Cleanup container.c by introducing spapr backend and move spapr code out (Cédric) - Introduce vfio_iommu_spapr_ops (Cédric) - Add doc of iommufd in qom.json and have iommufd member sorted (Markus) - patch19 and patch21 are splitted to two parts to facilitate review v2: - patch "vfio: Add base container" in v1 is split into patch1-15 per Cédric - add fd passing to platform/ap/ccw vfio device - add (uintptr_t) cast in iommufd_backend_map_dma() per Cédric - rename char_dev.h to chardev_open.h for same naming scheme per Daniel - add full copyright per Daniel and Jason Note changelog below are from full IOMMUFD series: v1: - Alloc hwpt instead of using auto hwpt - elaborate iommufd code per Nicolin - consolidate two patches and drop as.c - typo error fix and function rename rfcv4: - rebase on top of v8.0.3 - Add one patch from Yi which is about vfio device add in kvm - Remove IOAS_COPY optimization and focus on functions in this patchset - Fix wrong name issue reported and fix suggested by Matthew - Fix compilation issue reported and fix sugggsted by Nicolin - Use query_dirty_bitmap callback to replace get_dirty_bitmap for better granularity - Add dev_iter_next() callback to avoid adding so many callback at container scope, add VFIODevice.hwpt to support that - Restore all functions back to common from container whenever possible, mainly migration and reset related functions - Add --enable/disable-iommufd config option, enabled by default in linux - Remove VFIODevice.hwpt_next as it's redundant with VFIODevice.next - Adapt new VFIO_DEVICE_PCI_HOT_RESET uAPI for IOMMUFD backed device - vfio_kvm_device_add/del_group call vfio_kvm_device_add/del_fd to remove redundant code - Add FD passing support for vfio device backed by IOMMUFD - Fix hot unplug resource leak issue in vfio_legacy_detach_device() - Fix FD leak in vfio_get_devicefd() rfcv3: - rebase on top of v7.2.0 - Fix the compilation with CONFIG_IOMMUFD unset by using true classes for VFIO backends - Fix use after free in error path, reported by Alister - Split common.c in several steps to ease the review rfcv2: - remove the first three patches of rfcv1 - add open cdev helper suggested by Jason - remove the QOMification of the VFIOContainer and simply use standard ops (David) - add "-object iommufd" suggested by Alex Thanks Zhenzhong Eric Auger (11): vfio/container: Switch to dma_map|unmap API vfio/common: Move giommu_list in base container vfio/container: Move space field to base container vfio/container: Switch to IOMMU BE set_dirty_page_tracking/query_dirty_bitmap API vfio/container: Convert functions to base container vfio/container: Move vrdl_list, pgsizes and dma_max_mappings to base container vfio/container: Move listener to base container vfio/container: Move dirty_pgsizes and max_dirty_bitmap_size to base container vfio/container: Implement attach/detach_device backends/iommufd: Introduce the iommufd object vfio/pci: Allow the selection of a given iommu backend Yi Liu (2): util/char_dev: Add open_cdev() vfio/iommufd: Implement the iommufd backend Zhenzhong Duan (24): vfio/container: Move IBM EEH related functions into spapr_pci_vfio.c vfio/container: Move vfio_container_add/del_section_window into spapr.c vfio/container: Move spapr specific init/deinit into spapr.c vfio/spapr: Make vfio_spapr_create/remove_window static vfio/common: Move vfio_host_win_add/del into spapr.c vfio: Introduce base object for VFIOContainer and targetted interface vfio/container: Introduce a empty VFIOIOMMUOps vfio/container: Move per container device list in base container vfio/container: Move iova_ranges to base container vfio/spapr: Introduce spapr backend and target interface vfio/spapr: switch to spapr IOMMU BE add/del_section_window vfio/spapr: Move prereg_listener into spapr container vfio/spapr: Move hostwin_list into spapr container Add iommufd configure option vfio/iommufd: Switch to manual hwpt allocation vfio/iommufd: Add support for iova_ranges vfio/iommufd: Bypass EEH if iommufd backend vfio/pci: Extract out a helper vfio_pci_get_pci_hot_reset_info vfio/pci: Adapt vfio pci hot reset support with iommufd BE vfio/pci: Make vfio cdev pre-openable by passing a file handle vfio: Allow the selection of a given iommu backend for platform ap and ccw vfio/platform: Make vfio cdev pre-openable by passing a file handle vfio/ap: Make vfio cdev pre-openable by passing a file handle vfio/ccw: Make vfio cdev pre-openable by passing a file handle MAINTAINERS | 13 + meson.build | 6 + qapi/qom.json | 20 + include/hw/vfio/vfio-common.h | 120 ++---- include/hw/vfio/vfio-container-base.h | 126 ++++++ include/hw/vfio/vfio-platform.h | 1 + include/hw/vfio/vfio.h | 7 - include/qemu/chardev_open.h | 16 + include/sysemu/iommufd.h | 46 +++ backends/iommufd-stub.c | 59 +++ backends/iommufd.c | 268 ++++++++++++ hw/ppc/spapr_pci_vfio.c | 100 ++++- hw/vfio/ap.c | 38 +- hw/vfio/ccw.c | 40 +- hw/vfio/common.c | 323 +++++++-------- hw/vfio/container-base.c | 131 ++++++ hw/vfio/container.c | 434 ++++---------------- hw/vfio/helpers.c | 34 +- hw/vfio/iommufd.c | 562 ++++++++++++++++++++++++++ hw/vfio/pci.c | 253 ++++++++++-- hw/vfio/platform.c | 45 ++- hw/vfio/spapr.c | 293 ++++++++++++-- util/chardev_open.c | 81 ++++ backends/Kconfig | 4 + backends/meson.build | 5 + backends/trace-events | 12 + hw/vfio/meson.build | 4 + hw/vfio/trace-events | 17 +- meson_options.txt | 2 + qemu-options.hx | 13 + scripts/meson-buildoptions.sh | 3 + util/meson.build | 1 + 32 files changed, 2400 insertions(+), 677 deletions(-) create mode 100644 include/hw/vfio/vfio-container-base.h delete mode 100644 include/hw/vfio/vfio.h create mode 100644 include/qemu/chardev_open.h create mode 100644 include/sysemu/iommufd.h create mode 100644 backends/iommufd-stub.c create mode 100644 backends/iommufd.c create mode 100644 hw/vfio/container-base.c create mode 100644 hw/vfio/iommufd.c create mode 100644 util/chardev_open.c