- 18 1月, 2019 29 次提交
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由 Stefan Berger 提交于
The TPM Physical Presence interface consists of an ACPI part, a shared memory part, and code in the firmware. Users can send messages to the firmware by writing a code into the shared memory through invoking the ACPI code. When a reboot happens, the firmware looks for the code and acts on it by sending sequences of commands to the TPM. This patch adds the ACPI code. It is similar to the one in EDK2 but doesn't assume that SMIs are necessary to use. It uses a similar datastructure for the shared memory as EDK2 does so that EDK2 and SeaBIOS could both make use of it. I extended the shared memory data structure with an array of 256 bytes, one for each code that could be implemented. The array contains flags describing the individual codes. This decouples the ACPI implementation from the firmware implementation. The underlying TCG specification is accessible from the following page. https://trustedcomputinggroup.org/tcg-physical-presence-interface-specification/ This patch implements version 1.30. Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com> [ Marc-André - ACPI code improvements and windows fixes ] Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com> Acked-by: NMichael S. Tsirkin <mst@redhat.com> Reviewed-by: NIgor Mammedov <imammedo@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Tested-by: NStefan Berger <stefanb@linux.ibm.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Stefan Berger 提交于
To avoid having to hard code the base address of the PPI virtual memory device we introduce a fw_cfg file etc/tpm/config that holds the base address of the PPI device, the version of the PPI interface and the version of the attached TPM. Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com> [ Marc-André: renamed to etc/tpm/config, made it static, document it ] Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com> Acked-by: NMichael S. Tsirkin <mst@redhat.com> Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Tested-by: NStefan Berger <stefanb@linux.ibm.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Stefan Berger 提交于
Implement a virtual memory device for the TPM Physical Presence interface. The memory is located at 0xFED45000 and used by ACPI to send messages to the firmware (BIOS) and by the firmware to provide parameters for each one of the supported codes. This interface should be used by all TPM devices on x86 and can be added by calling tpm_ppi_init_io(). Note: bios_linker cannot be used to allocate the PPI memory region, since the reserved memory should stay stable across reboots, and might be needed before the ACPI tables are installed. Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: NIgor Mammedov <imammedo@redhat.com> Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Tested-by: NStefan Berger <stefanb@linux.ibm.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Marc-André Lureau 提交于
The following patches implement the TPM Physical Presence Interface, make use of a new memory region and a fw_cfg entry. Enable PPI by default with >=4.0 machine type, to avoid migration issues. Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: NIgor Mammedov <imammedo@redhat.com> Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Tested-by: NStefan Berger <stefanb@linux.ibm.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Fei Li 提交于
Let's supplement the msi_uninit() when failing to realize the pci edu device. Reported-by: NMarkus Armbruster <armbru@redhat.com> Signed-off-by: NFei Li <shirley17fei@gmail.com> Reviewed-by: NMarcel Apfelbaum <marcel.apfelbaum@gmail.com> Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: NPeter Xu <peterx@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Eduardo Habkost 提交于
The disable-legacy and disable-modern properties apply only to some virtio-pci devices. Make those properties optional. This fixes the crash introduced by commit f6e501a2 ("virtio: Provide version-specific variants of virtio PCI devices"): $ qemu-system-x86_64 -machine pc-i440fx-2.6 \ -device virtio-net-pci-non-transitional Unexpected error in object_property_find() at qom/object.c:1092: qemu-system-x86_64: -device virtio-net-pci-non-transitional: can't apply \ global virtio-pci.disable-modern=on: Property '.disable-modern' not found Aborted (core dumped) Reported-by: NThomas Huth <thuth@redhat.com> Fixes: f6e501a2 ("virtio: Provide version-specific variants of virtio PCI devices") Signed-off-by: NEduardo Habkost <ehabkost@redhat.com> Reviewed-by: NCornelia Huck <cohuck@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Eduardo Habkost 提交于
Making some global properties optional will let us simplify compat code when a given property works on most (but not all) subclasses of a given type. Device types will be able to opt out from optional compat properties by simply not registering those properties. Signed-off-by: NEduardo Habkost <ehabkost@redhat.com> Reviewed-by: NCornelia Huck <cohuck@redhat.com> Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NGreg Kurz <groug@kaod.org> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Virtio console and qga tests also depend on CONFIG_VIRTIO_SERIAL. Reviewed-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Notice that we can't still run tests with it disabled. Both cdrom-test and drive_del-test use virtio-scsi without checking if it is enabled. Reviewed-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Acked-by: NGreg Kurz <groug@kaod.org> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
For consistency with other devices, rename virtio_host_{initfn,pci_info} to virtio_input_host_{initfn,info}. Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Juan Quintela 提交于
Reviewed-by: NLaurent Vivier <lvivier@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Yuri Benditovich 提交于
Allocated feature bit changed in spec draft per TC request. Signed-off-by: NYuri Benditovich <yuri.benditovich@daynix.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Yuri Benditovich 提交于
This commit adds implementation of RX packets coalescing, compatible with requirements of Windows Hardware compatibility kit. The device enables feature VIRTIO_NET_F_RSC_EXT in host features if it supports extended RSC functionality as defined in the specification. This feature requires at least one of VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6. Windows guest driver acks this feature only if VIRTIO_NET_F_CTRL_GUEST_OFFLOADS is also present. If the guest driver acks VIRTIO_NET_F_RSC_EXT feature, the device coalesces TCPv4 and TCPv6 packets (if respective VIRTIO_NET_F_GUEST_TSO feature is on, populates extended RSC information in virtio header and sets VIRTIO_NET_HDR_F_RSC_INFO bit in header flags. The device does not recalculate checksums in the coalesced packet, so they are not valid. In this case: All the data packets in a tcp connection are cached to a single buffer in every receive interval, and will be sent out via a timer, the 'virtio_net_rsc_timeout' controls the interval, this value may impact the performance and response time of tcp connection, 50000(50us) is an experience value to gain a performance improvement, since the whql test sends packets every 100us, so '300000(300us)' passes the test case, it is the default value as well, tune it via the command line parameter 'rsc_interval' within 'virtio-net-pci' device, for example, to launch a guest with interval set as '500000': 'virtio-net-pci,netdev=hostnet1,bus=pci.0,id=net1,mac=00, guest_rsc_ext=on,rsc_interval=500000' The timer will only be triggered if the packets pool is not empty, and it'll drain off all the cached packets. 'NetRscChain' is used to save the segments of IPv4/6 in a VirtIONet device. A new segment becomes a 'Candidate' as well as it passed sanity check, the main handler of TCP includes TCP window update, duplicated ACK check and the real data coalescing. An 'Candidate' segment means: 1. Segment is within current window and the sequence is the expected one. 2. 'ACK' of the segment is in the valid window. Sanity check includes: 1. Incorrect version in IP header 2. An IP options or IP fragment 3. Not a TCP packet 4. Sanity size check to prevent buffer overflow attack. 5. An ECN packet Even though, there might more cases should be considered such as ip identification other flags, while it breaks the test because windows set it to the same even it's not a fragment. Normally it includes 2 typical ways to handle a TCP control flag, 'bypass' and 'finalize', 'bypass' means should be sent out directly, while 'finalize' means the packets should also be bypassed, but this should be done after search for the same connection packets in the pool and drain all of them out, this is to avoid out of order fragment. All the 'SYN' packets will be bypassed since this always begin a new' connection, other flags such 'URG/FIN/RST/CWR/ECE' will trigger a finalization, because this normally happens upon a connection is going to be closed, an 'URG' packet also finalize current coalescing unit. Statistics can be used to monitor the basic coalescing status, the 'out of order' and 'out of window' means how many retransmitting packets, thus describe the performance intuitively. Difference between ip v4 and v6 processing: Fragment length in ipv4 header includes itself, while it's not included for ipv6, thus means ipv6 can carry a real 65535 payload. Note that main goal of implementing this feature in software is to create reference setup for certification tests. In such setups guest migration is not required, so the coalesced packets not yet delivered to the guest will be lost in case of migration. Signed-off-by: NWei Xu <wexu@redhat.com> Signed-off-by: NYuri Benditovich <yuri.benditovich@daynix.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Igor Mammedov 提交于
AcpiSdtTable::header::signature is the only remained field from AcpiTableHeader structure used by tests. Instead of using packed structure to access signature, just read it directly from table blob and remove no longer used AcpiSdtTable::header / union and keep only AcpiSdtTable::aml byte array. Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Acked-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Igor Mammedov 提交于
some parts of sanitize_fadt_ptrs() do redundant job - locating FADT - checking original checksum There is no need to do it as test_acpi_fadt_table() already does that, so drop duplicate code and move remaining fixup code into test_acpi_fadt_table(). Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Acked-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Igor Mammedov 提交于
replace a bunch of ACPI_READ_ARRAY/ACPI_READ_FIELD macro, that read SMBIOS table field by field with one memread() to fetch whole table at once and drop no longer used ACPI_READ_ARRAY/ACPI_READ_FIELD macro. Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Acked-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Igor Mammedov 提交于
Move fetch_table() into acpi-utils.c renaming it to acpi_fetch_table() and reuse it in vmgenid-test that reads RSDT and then tables it references, to find and parse VMGNEID SSDT. While at it wrap RSDT referenced tables enumeration into FOREACH macro (similar to what we do with QLIST_FOREACH & co) to reuse it with bios and vmgenid tests. Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Acked-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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- 15 1月, 2019 11 次提交
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由 Igor Mammedov 提交于
It allows to remove a bit more of code duplication and reuse common utility to get ACPI tables from guest (modulo RSDP). While at it, consolidate signature checking into fetch_table() instead of open-codding it. Considering FACS is special and doesn't have checksum, make checksum validation optin, the same goes for signature verification. PS: By pure accident, patch also fixes FACS not being tested against reference table since it wasn't added to data::tables list. But we managed not to regress it since reference file was added by commit (d2597938 acpi unit-test: add test files) back in 2013 Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Acked-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Igor Mammedov 提交于
RSDT referenced tables always have length at offset 4 and checksum at offset 9, that's enough for reusing fetch_table() and replacing custom RSDT fetching code with it. While at it * merge fetch_rsdt_referenced_tables() into test_acpi_rsdt_table() * drop test_data::rsdt_table/rsdt_tables_addr/rsdt_tables_nr since we need this data only for duration of test_acpi_rsdt_table() to fetch other tables and use locals instead. Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Acked-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Igor Mammedov 提交于
Whole FADT is fetched as part of RSDT referenced tables in fetch_rsdt_referenced_tables() albeit a bit later than when FADT is partially parsed in fadt_fetch_facs_and_dsdt_ptrs(). However there is no reason for calling fetch_rsdt_referenced_tables() so late, just move it right after we fetched RSDT and before fadt_fetch_facs_and_dsdt_ptrs(). That way we can reuse whole FADT fetched by fetch_rsdt_referenced_tables() and avoid duplicate custom fields fetching in fadt_fetch_facs_and_dsdt_ptrs(). While at it rename fadt_fetch_facs_and_dsdt_ptrs() to test_acpi_fadt_table(). The follow up patch will merge fadt_fetch_facs_and_dsdt_ptrs() into test_acpi_rsdt_table(), so that we would end up calling only test_acpi_FOO_table() for consistency for tables that require special processing. Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Acked-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Igor Mammedov 提交于
Currently in the 1st case we store table body fetched from QEMU in AcpiSdtTable::aml minus it's header but in the 2nd case when we load reference aml from disk, it holds whole blob including header. More over in the 1st case, we read header in separate AcpiSdtTable::header structure and then jump over hoops to fixup tables and combine both. Treat AcpiSdtTable::aml as whole table blob approach in both cases and when fetching tables from QEMU, first get table length and then fetch whole table into AcpiSdtTable::aml instead if doing it field by field. As result * AcpiSdtTable::aml is used in consistent manner * FADT fixups use offsets from spec instead of being shifted by header length * calculating checksums and dumping blobs becomes simpler Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Acked-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Li Qiang 提交于
Assert that the return value is not an error. This is like commit 7e6478e7 for qemu_set_cloexec. Signed-off-by: NLi Qiang <liq3ea@163.com> Reviewed-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Li Qiang 提交于
Currently, the vhost-user-test assumes the eventfd is available. However it's not true because the accel is qtest. So the 'vhost_set_vring_file' will not add fds to the msg and the server side of vhost-user-test will be broken. The bug is in 'ioeventfd_enabled'. We should make this function return true if not using kvm accel. Signed-off-by: NLi Qiang <liq3ea@163.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Li Qiang 提交于
Currently when processing VHOST_USER_SET_VRING_CALL if 'qemu_chr_fe_get_msgfds' get no fd, the 'fd' will be a stack uninitialized value. Signed-off-by: NLi Qiang <liq3ea@163.com> Reviewed-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Jian Wang 提交于
Memset vhost_dev to zero in the vhost_dev_cleanup function. This causes dev.vqs to be NULL, so that vqs does not free up space when calling the g_free function. This will result in a memory leak. But you can't release vqs directly in the vhost_dev_cleanup function, because vhost_net will also call this function, and vhost_net's vqs is assigned by array. In order to solve this problem, we first save the pointer of vqs, and release the space of vqs after vhost_dev_cleanup is called. Signed-off-by: NJian Wang <wangjian161@huawei.com> Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Thomas Huth 提交于
It's been marked as deprecated in QEMU v2.6.0 already, so really nobody should use the legacy "ivshmem" device anymore (but use ivshmem-plain or ivshmem-doorbell instead). Time to remove the deprecated device now. Belatedly also update a mention of the deprecated "ivshmem" in the file docs/specs/ivshmem-spec.txt to "ivshmem-doorbell". Missed in commit 5400c02b ("ivshmem: Split ivshmem-plain, ivshmem-doorbell off ivshmem"). Signed-off-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NMarkus Armbruster <armbru@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 Dongli Zhang 提交于
In msix_exclusive_bar the bar_pba_size is more than what the pba is expected to have, although this never affects the bar size. Specifically, the math in msix_init_exclusive_bar allocates too much memory in some cases. For example consider nentries = 8. msix_exclusive_bar will give us bar_pba_size = 16. So 16 bytes. However 8 bytes would be enough - this is all that the spec requires. So in practice bar_pba_size sometimes allocates an extra 8 bytes but never more. Since each MSIX entry size is 16 bytes, and since we make sure that table+pba is a power of two, this always leaves a multiple of 16 bytes for the PBA, so extra 8 bytes have no effect. However, its ugly to have pba size temporary variable have an incorrect value. For consistency switch to the formula used in msix_init. Signed-off-by: NDongli Zhang <dongli.zhang@oracle.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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由 David Hildenbrand 提交于
We better stop right away. For now, errors would be partially ignored (so the guest might get informed or the device might get unplugged), although actual plug/unplug will be reported as failed to the user. While at it, properly move the check to the pre_plug handler for the plug case, as we can test the slot state before the device will be realized. Reviewed-by: NIgor Mammedov <imammedo@redhat.com> Reviewed-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NDavid Hildenbrand <david@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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