| Message ID | 20240305180734.48515-8-eric.auger@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | VIRTIO-IOMMU: Introduce aw-bits and granule options | expand |
Hi Eric, >-----Original Message----- >From: Eric Auger <eric.auger@redhat.com> >Subject: [PATCH v6 7/9] hw/i386/q35: Set virtio-iommu aw-bits default >value to 39 > >Currently the default input range can extend to 64 bits. On x86, >when the virtio-iommu protects vfio devices, the physical iommu >may support only 39 bits. Let's set the default to 39, as done >for the intel-iommu. > >We use hw_compat_8_2 to handle the compatibility for machines >before 9.0 which used to have a virtio-iommu default input range >of 64 bits. > >Of course if aw-bits is set from the command line, the default >is overriden. > >Signed-off-by: Eric Auger <eric.auger@redhat.com> > >--- > >v5 -> v6: >- split pc/arm settings > >v3 -> v4: >- update the qos test to relax the check on the max input IOVA > >v2 -> v3: >- collected Zhenzhong's R-b >- use &error_abort instead of NULL error handle > on object_property_get_uint() call (Cédric) >- use VTD_HOST_AW_39BIT (Cédric) > >v1 -> v2: >- set aw-bits to 48b on ARM >- use hw_compat_8_2 to handle the compat for older machines > which used 64b as a default >--- > include/hw/i386/pc.h | 3 +++ > hw/core/machine.c | 1 + > hw/i386/pc.c | 6 ++++++ > hw/i386/pc_q35.c | 2 ++ > tests/qtest/virtio-iommu-test.c | 2 +- > 5 files changed, 13 insertions(+), 1 deletion(-) > >diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h >index 5065590281..b3229f98de 100644 >--- a/include/hw/i386/pc.h >+++ b/include/hw/i386/pc.h >@@ -198,6 +198,9 @@ void pc_system_parse_ovmf_flash(uint8_t >*flash_ptr, size_t flash_size); > /* sgx.c */ > void pc_machine_init_sgx_epc(PCMachineState *pcms); > >+extern GlobalProperty pc_compat_defaults[]; >+extern const size_t pc_compat_defaults_len; If we only want to support q35 and not i440fx, better to add _q35 suffix and move into pc_q35.c and made static? >+ > extern GlobalProperty pc_compat_8_2[]; > extern const size_t pc_compat_8_2_len; > >diff --git a/hw/core/machine.c b/hw/core/machine.c >index 6bd09d4592..4b89172d1c 100644 >--- a/hw/core/machine.c >+++ b/hw/core/machine.c >@@ -35,6 +35,7 @@ > > GlobalProperty hw_compat_8_2[] = { > { TYPE_VIRTIO_IOMMU_PCI, "granule", "4k" }, >+ { TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "64" }, > }; > const size_t hw_compat_8_2_len = G_N_ELEMENTS(hw_compat_8_2); > >diff --git a/hw/i386/pc.c b/hw/i386/pc.c >index f5ff970acf..9024483356 100644 >--- a/hw/i386/pc.c >+++ b/hw/i386/pc.c >@@ -59,6 +59,7 @@ > #include "hw/i386/kvm/xen_evtchn.h" > #include "hw/i386/kvm/xen_gnttab.h" > #include "hw/i386/kvm/xen_xenstore.h" >+#include "hw/i386/intel_iommu.h" This can be removed? > #include "hw/mem/memory-device.h" > #include "e820_memory_layout.h" > #include "trace.h" >@@ -78,6 +79,11 @@ > { "qemu64-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " >v, },\ > { "athlon-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, }, > >+GlobalProperty pc_compat_defaults[] = { >+ { TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "39" }, >+}; >+const size_t pc_compat_defaults_len = >G_N_ELEMENTS(pc_compat_defaults); >+ > GlobalProperty pc_compat_8_2[] = {}; > const size_t pc_compat_8_2_len = G_N_ELEMENTS(pc_compat_8_2); > >diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c >index 45a4102e75..32421a0a5f 100644 >--- a/hw/i386/pc_q35.c >+++ b/hw/i386/pc_q35.c >@@ -356,6 +356,8 @@ static void pc_q35_machine_options(MachineClass >*m) > machine_class_allow_dynamic_sysbus_dev(m, >TYPE_INTEL_IOMMU_DEVICE); > machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE); > machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE); >+ compat_props_add(m->compat_props, >+ pc_compat_defaults, pc_compat_defaults_len); > } > > static void pc_q35_9_0_machine_options(MachineClass *m) >diff --git a/tests/qtest/virtio-iommu-test.c b/tests/qtest/virtio-iommu-test.c >index 068e7a9e6c..0f36381acb 100644 >--- a/tests/qtest/virtio-iommu-test.c >+++ b/tests/qtest/virtio-iommu-test.c >@@ -34,7 +34,7 @@ static void pci_config(void *obj, void *data, >QGuestAllocator *t_alloc) > uint8_t bypass = qvirtio_config_readb(dev, 36); > > g_assert_cmpint(input_range_start, ==, 0); >- g_assert_cmphex(input_range_end, ==, UINT64_MAX); >+ g_assert_cmphex(input_range_end, >=, 32); UINT32_MAX? Thanks Zhenzhong > g_assert_cmpint(domain_range_start, ==, 0); > g_assert_cmpint(domain_range_end, ==, UINT32_MAX); > g_assert_cmpint(bypass, ==, 1); >-- >2.41.0
Hi Zhenzhong, On 3/6/24 04:15, Duan, Zhenzhong wrote: > Hi Eric, > >> -----Original Message----- >> From: Eric Auger <eric.auger@redhat.com> >> Subject: [PATCH v6 7/9] hw/i386/q35: Set virtio-iommu aw-bits default >> value to 39 >> >> Currently the default input range can extend to 64 bits. On x86, >> when the virtio-iommu protects vfio devices, the physical iommu >> may support only 39 bits. Let's set the default to 39, as done >> for the intel-iommu. >> >> We use hw_compat_8_2 to handle the compatibility for machines >> before 9.0 which used to have a virtio-iommu default input range >> of 64 bits. >> >> Of course if aw-bits is set from the command line, the default >> is overriden. >> >> Signed-off-by: Eric Auger <eric.auger@redhat.com> >> >> --- >> >> v5 -> v6: >> - split pc/arm settings >> >> v3 -> v4: >> - update the qos test to relax the check on the max input IOVA >> >> v2 -> v3: >> - collected Zhenzhong's R-b >> - use &error_abort instead of NULL error handle >> on object_property_get_uint() call (Cédric) >> - use VTD_HOST_AW_39BIT (Cédric) >> >> v1 -> v2: >> - set aw-bits to 48b on ARM >> - use hw_compat_8_2 to handle the compat for older machines >> which used 64b as a default >> --- >> include/hw/i386/pc.h | 3 +++ >> hw/core/machine.c | 1 + >> hw/i386/pc.c | 6 ++++++ >> hw/i386/pc_q35.c | 2 ++ >> tests/qtest/virtio-iommu-test.c | 2 +- >> 5 files changed, 13 insertions(+), 1 deletion(-) >> >> diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h >> index 5065590281..b3229f98de 100644 >> --- a/include/hw/i386/pc.h >> +++ b/include/hw/i386/pc.h >> @@ -198,6 +198,9 @@ void pc_system_parse_ovmf_flash(uint8_t >> *flash_ptr, size_t flash_size); >> /* sgx.c */ >> void pc_machine_init_sgx_epc(PCMachineState *pcms); >> >> +extern GlobalProperty pc_compat_defaults[]; >> +extern const size_t pc_compat_defaults_len; > If we only want to support q35 and not i440fx, better to add _q35 suffix and move into pc_q35.c and made static? Sure. I was initially following Igor's suggestion but it makes sense to restrict to q35 and turn in static I think. > >> + >> extern GlobalProperty pc_compat_8_2[]; >> extern const size_t pc_compat_8_2_len; >> >> diff --git a/hw/core/machine.c b/hw/core/machine.c >> index 6bd09d4592..4b89172d1c 100644 >> --- a/hw/core/machine.c >> +++ b/hw/core/machine.c >> @@ -35,6 +35,7 @@ >> >> GlobalProperty hw_compat_8_2[] = { >> { TYPE_VIRTIO_IOMMU_PCI, "granule", "4k" }, >> + { TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "64" }, >> }; >> const size_t hw_compat_8_2_len = G_N_ELEMENTS(hw_compat_8_2); >> >> diff --git a/hw/i386/pc.c b/hw/i386/pc.c >> index f5ff970acf..9024483356 100644 >> --- a/hw/i386/pc.c >> +++ b/hw/i386/pc.c >> @@ -59,6 +59,7 @@ >> #include "hw/i386/kvm/xen_evtchn.h" >> #include "hw/i386/kvm/xen_gnttab.h" >> #include "hw/i386/kvm/xen_xenstore.h" >> +#include "hw/i386/intel_iommu.h" > This can be removed? yes > >> #include "hw/mem/memory-device.h" >> #include "e820_memory_layout.h" >> #include "trace.h" >> @@ -78,6 +79,11 @@ >> { "qemu64-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " >> v, },\ >> { "athlon-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, }, >> >> +GlobalProperty pc_compat_defaults[] = { >> + { TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "39" }, >> +}; >> +const size_t pc_compat_defaults_len = >> G_N_ELEMENTS(pc_compat_defaults); >> + >> GlobalProperty pc_compat_8_2[] = {}; >> const size_t pc_compat_8_2_len = G_N_ELEMENTS(pc_compat_8_2); >> >> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c >> index 45a4102e75..32421a0a5f 100644 >> --- a/hw/i386/pc_q35.c >> +++ b/hw/i386/pc_q35.c >> @@ -356,6 +356,8 @@ static void pc_q35_machine_options(MachineClass >> *m) >> machine_class_allow_dynamic_sysbus_dev(m, >> TYPE_INTEL_IOMMU_DEVICE); >> machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE); >> machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE); >> + compat_props_add(m->compat_props, >> + pc_compat_defaults, pc_compat_defaults_len); >> } >> >> static void pc_q35_9_0_machine_options(MachineClass *m) >> diff --git a/tests/qtest/virtio-iommu-test.c b/tests/qtest/virtio-iommu-test.c >> index 068e7a9e6c..0f36381acb 100644 >> --- a/tests/qtest/virtio-iommu-test.c >> +++ b/tests/qtest/virtio-iommu-test.c >> @@ -34,7 +34,7 @@ static void pci_config(void *obj, void *data, >> QGuestAllocator *t_alloc) >> uint8_t bypass = qvirtio_config_readb(dev, 36); >> >> g_assert_cmpint(input_range_start, ==, 0); >> - g_assert_cmphex(input_range_end, ==, UINT64_MAX); >> + g_assert_cmphex(input_range_end, >=, 32); > UINT32_MAX? sure! Thank you for the review! Eric > > Thanks > Zhenzhong > >> g_assert_cmpint(domain_range_start, ==, 0); >> g_assert_cmpint(domain_range_end, ==, UINT32_MAX); >> g_assert_cmpint(bypass, ==, 1); >> -- >> 2.41.0
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 5065590281..b3229f98de 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -198,6 +198,9 @@ void pc_system_parse_ovmf_flash(uint8_t *flash_ptr, size_t flash_size); /* sgx.c */ void pc_machine_init_sgx_epc(PCMachineState *pcms); +extern GlobalProperty pc_compat_defaults[]; +extern const size_t pc_compat_defaults_len; + extern GlobalProperty pc_compat_8_2[]; extern const size_t pc_compat_8_2_len; diff --git a/hw/core/machine.c b/hw/core/machine.c index 6bd09d4592..4b89172d1c 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -35,6 +35,7 @@ GlobalProperty hw_compat_8_2[] = { { TYPE_VIRTIO_IOMMU_PCI, "granule", "4k" }, + { TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "64" }, }; const size_t hw_compat_8_2_len = G_N_ELEMENTS(hw_compat_8_2); diff --git a/hw/i386/pc.c b/hw/i386/pc.c index f5ff970acf..9024483356 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -59,6 +59,7 @@ #include "hw/i386/kvm/xen_evtchn.h" #include "hw/i386/kvm/xen_gnttab.h" #include "hw/i386/kvm/xen_xenstore.h" +#include "hw/i386/intel_iommu.h" #include "hw/mem/memory-device.h" #include "e820_memory_layout.h" #include "trace.h" @@ -78,6 +79,11 @@ { "qemu64-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },\ { "athlon-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, }, +GlobalProperty pc_compat_defaults[] = { + { TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "39" }, +}; +const size_t pc_compat_defaults_len = G_N_ELEMENTS(pc_compat_defaults); + GlobalProperty pc_compat_8_2[] = {}; const size_t pc_compat_8_2_len = G_N_ELEMENTS(pc_compat_8_2); diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index 45a4102e75..32421a0a5f 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -356,6 +356,8 @@ static void pc_q35_machine_options(MachineClass *m) machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE); machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE); machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE); + compat_props_add(m->compat_props, + pc_compat_defaults, pc_compat_defaults_len); } static void pc_q35_9_0_machine_options(MachineClass *m) diff --git a/tests/qtest/virtio-iommu-test.c b/tests/qtest/virtio-iommu-test.c index 068e7a9e6c..0f36381acb 100644 --- a/tests/qtest/virtio-iommu-test.c +++ b/tests/qtest/virtio-iommu-test.c @@ -34,7 +34,7 @@ static void pci_config(void *obj, void *data, QGuestAllocator *t_alloc) uint8_t bypass = qvirtio_config_readb(dev, 36); g_assert_cmpint(input_range_start, ==, 0); - g_assert_cmphex(input_range_end, ==, UINT64_MAX); + g_assert_cmphex(input_range_end, >=, 32); g_assert_cmpint(domain_range_start, ==, 0); g_assert_cmpint(domain_range_end, ==, UINT32_MAX); g_assert_cmpint(bypass, ==, 1);
Currently the default input range can extend to 64 bits. On x86, when the virtio-iommu protects vfio devices, the physical iommu may support only 39 bits. Let's set the default to 39, as done for the intel-iommu. We use hw_compat_8_2 to handle the compatibility for machines before 9.0 which used to have a virtio-iommu default input range of 64 bits. Of course if aw-bits is set from the command line, the default is overriden. Signed-off-by: Eric Auger <eric.auger@redhat.com> --- v5 -> v6: - split pc/arm settings v3 -> v4: - update the qos test to relax the check on the max input IOVA v2 -> v3: - collected Zhenzhong's R-b - use &error_abort instead of NULL error handle on object_property_get_uint() call (Cédric) - use VTD_HOST_AW_39BIT (Cédric) v1 -> v2: - set aw-bits to 48b on ARM - use hw_compat_8_2 to handle the compat for older machines which used 64b as a default --- include/hw/i386/pc.h | 3 +++ hw/core/machine.c | 1 + hw/i386/pc.c | 6 ++++++ hw/i386/pc_q35.c | 2 ++ tests/qtest/virtio-iommu-test.c | 2 +- 5 files changed, 13 insertions(+), 1 deletion(-)