- 16 2月, 2015 40 次提交
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由 Max Reitz 提交于
Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423162705-32065-12-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NKevin Wolf <kwolf@redhat.com> Message-id: 1423162705-32065-11-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
Although qemu-img already creates BlockBackends, it does not do accesses to the images through them. This patch converts all of the bdrv_* calls for which this is currently possible to blk_* calls. Most of the remaining calls will probably stay bdrv_* calls because they really do operate on the BDS level instead of the BB level. Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423162705-32065-10-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423162705-32065-9-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423162705-32065-8-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
As part of the required changes, this fixes a bug where specifying an invalid driver would result in the block layer probing the image format; now it will result in an error, unless "<unset>" is specified as the driver name. Fixing this would require further work on the xen_disk code which does not seem worth it (at this point and for this patch). Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423162705-32065-7-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
Due to different error propagation, this breaks tests 051 and 087; fix their output. Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423162705-32065-6-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
While specifying a different driver and format is obviously invalid, specifying the same driver once through driver and once through format is invalid as well. Add a test for it. Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423162705-32065-5-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
The argument given to bdrv_find_protocol() is just a file name, which makes it difficult for the caller to reconstruct what protocol bdrv_find_protocol() was hoping to find. This patch adds an Error parameter to that function to solve this issue. Suggested-by: NEric Blake <eblake@redhat.com> Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423162705-32065-4-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
blk_new_with_bs() creates a BlockBackend with an empty BlockDriverState attached to it. Empty BDSs are not nice, therefore add an alternative function which combines blk_new_with_bs() with bdrv_open(). Note: In contrast to bdrv_open() which takes a BlockDriver parameter, blk_new_open() does not take such a parameter. This is because bdrv_open() opens a BlockDriverState, therefore it is natural to be able to set the BlockDriver for that BDS. The fact that bdrv_open() can open more than a single BDS is merely some form of a byproduct. blk_new_open() on the other hand is intended to be used to create a whole tree of BlockDriverStates. Therefore, setting a single BlockDriver does not make much sense. Instead, the drivers to be used for each of the nodes must be configured through the "options" QDict; including the driver of the root BDS. Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Reviewed-by: NKevin Wolf <kwolf@redhat.com> Message-id: 1423162705-32065-3-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
Create the blk_* counterparts for the following bdrv_* functions (which make sense to call on the BlockBackend level): - bdrv_co_write_zeroes() - bdrv_write_compressed() - bdrv_truncate() - bdrv_nb_sectors() - bdrv_discard() - bdrv_load_vmstate() - bdrv_save_vmstate() Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423162705-32065-2-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423666727-20777-3-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Max Reitz 提交于
If -n is specified, it does not matter whether the output format and protocol support image creation; building the creation options should simply be skipped. Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423666727-20777-2-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Fam Zheng 提交于
This case utilizes qemu-io command "aio_{read,write} -q" to verify the effectiveness of IO throttling options. It's implemented by driving the vm timer from qtest protocol, so the throttling timers are signaled with determinied time duration. Then we verify the completed IO requests are within 10% error of bps and iops limits. "null" protocol is used as the disk backend so that no actual disk IO is performed on host, this will make the blockstats much more deterministic. Both "null-aio" and "null-co" are covered, which is also a simple cross validation test for the driver code. Signed-off-by: NFam Zheng <famz@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Message-id: 1422586186-9925-6-git-send-email-famz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Fam Zheng 提交于
QMP command "block_set_io_throttle" expects underscores in parameters instead of dashes: {iops,bps}_{rd,wr,max}. Add optional argument conv_keys (defaults to True, backward compatible), it will be used in IO throttling test case. Reviewed-by: NBenoit Canet <benoit@irqsave.net> Signed-off-by: NFam Zheng <famz@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Message-id: 1422586186-9925-5-git-send-email-famz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Fam Zheng 提交于
This will allow test cases to run command in qtest protocol. It's write-only for now. Signed-off-by: NFam Zheng <famz@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Message-id: 1422586186-9925-4-git-send-email-famz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Fam Zheng 提交于
This adds scripts/qtest.py as a python library for qtest protocol. This is a skeleton with a basic "cmd" method to execute a command, reading and parsing of qtest output could be added later on demand. Signed-off-by: NFam Zheng <famz@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Message-id: 1422586186-9925-3-git-send-email-famz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Fam Zheng 提交于
This will enable accounting of aio requests issued from qemu-io aio read/write commands. Signed-off-by: NFam Zheng <famz@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Message-id: 1422586186-9925-2-git-send-email-famz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Fam Zheng 提交于
qemu_clock_run_timers() only takes care of main_loop_tlg, we shouldn't forget aio timer list groups. Currently, the qemu_clock_deadline_ns_all (a few lines above) counts all the timergroups of this clock type, including aio tlg, but we don't fire them, so they are never cleared, which makes a dead loop. For example, this function hangs when trying to drive throttled block request queue with qtest clock_step. Signed-off-by: NFam Zheng <famz@redhat.com> Acked-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1421661103-29153-1-git-send-email-famz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Jeff Cody 提交于
The size compared should be PATH_MAX, rather than sizeof(char *). Reported-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NJeff Cody <jcody@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Message-id: 46d873261433f4527e88885582f96942d61758d6.1423592487.git.jcody@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Kevin Wolf 提交于
If an internal snapshot can't be saved because migration is blocked (most commonly probably because of AHCI), we had a really bad error message: $ echo -e "savevm foo\nquit" | qemu -M q35 /tmp/test.qcow2 -monitor stdio QEMU 2.2.50 monitor - type 'help' for more information (qemu) savevm foo Error -22 while writing VM (qemu) quit This patch converts qemu_savevm_state() to the Error infrastructure so that a useful error pointing to the problematic device is produced now: $ echo -e "savevm foo\nquit" | qemu -M q35 /tmp/test.qcow2 -monitor stdio QEMU 2.2.50 monitor - type 'help' for more information (qemu) savevm foo State blocked by non-migratable device '0000:00:1f.2/ich9_ahci' (qemu) quit Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-id: 1423574702-23072-1-git-send-email-kwolf@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 Bin Wu 提交于
When we tested the VM migartion between different hosts with NBD devices, we found if we sent a cancel command after the drive_mirror was just started, a coroutine re-enter error would occur. The stack was as follow: (gdb) bt 00) 0x00007fdfc744d885 in raise () from /lib64/libc.so.6 01) 0x00007fdfc744ee61 in abort () from /lib64/libc.so.6 02) 0x00007fdfca467cc5 in qemu_coroutine_enter (co=0x7fdfcaedb400, opaque=0x0) at qemu-coroutine.c:118 03) 0x00007fdfca467f6c in qemu_co_queue_run_restart (co=0x7fdfcaedb400) at qemu-coroutine-lock.c:59 04) 0x00007fdfca467be5 in coroutine_swap (from=0x7fdfcaf3c4e8, to=0x7fdfcaedb400) at qemu-coroutine.c:96 05) 0x00007fdfca467cea in qemu_coroutine_enter (co=0x7fdfcaedb400, opaque=0x0) at qemu-coroutine.c:123 06) 0x00007fdfca467f6c in qemu_co_queue_run_restart (co=0x7fdfcaedbdc0) at qemu-coroutine-lock.c:59 07) 0x00007fdfca467be5 in coroutine_swap (from=0x7fdfcaf3c4e8, to=0x7fdfcaedbdc0) at qemu-coroutine.c:96 08) 0x00007fdfca467cea in qemu_coroutine_enter (co=0x7fdfcaedbdc0, opaque=0x0) at qemu-coroutine.c:123 09) 0x00007fdfca4a1fa4 in nbd_recv_coroutines_enter_all (s=0x7fdfcaef7dd0) at block/nbd-client.c:41 10) 0x00007fdfca4a1ff9 in nbd_teardown_connection (client=0x7fdfcaef7dd0) at block/nbd-client.c:50 11) 0x00007fdfca4a20f0 in nbd_reply_ready (opaque=0x7fdfcaef7dd0) at block/nbd-client.c:92 12) 0x00007fdfca45ed80 in aio_dispatch (ctx=0x7fdfcae15e90) at aio-posix.c:144 13) 0x00007fdfca45ef1b in aio_poll (ctx=0x7fdfcae15e90, blocking=false) at aio-posix.c:222 14) 0x00007fdfca448c34 in aio_ctx_dispatch (source=0x7fdfcae15e90, callback=0x0, user_data=0x0) at async.c:212 15) 0x00007fdfc8f2f69a in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0 16) 0x00007fdfca45c391 in glib_pollfds_poll () at main-loop.c:190 17) 0x00007fdfca45c489 in os_host_main_loop_wait (timeout=1483677098) at main-loop.c:235 18) 0x00007fdfca45c57b in main_loop_wait (nonblocking=0) at main-loop.c:484 19) 0x00007fdfca25f403 in main_loop () at vl.c:2249 20) 0x00007fdfca266fc2 in main (argc=42, argv=0x7ffff517d638, envp=0x7ffff517d790) at vl.c:4814 We find the nbd_recv_coroutines_enter_all function (triggered by a cancel command or a network connection breaking down) will enter a coroutine which is waiting for the sending lock. If the lock is still held by another coroutine, the entering coroutine will be added into the co_queue again. Latter, when the lock is released, a coroutine re-enter error will occur. This bug can be fixed simply by delaying the setting of recv_coroutine as suggested by paolo. After applying this patch, we have tested the cancel operation in mirror phase looply for more than 5 hous and everything is fine. Without this patch, a coroutine re-enter error will occur in 5 minutes. Signed-off-by: NBn Wu <wu.wubin@huawei.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423552846-3896-1-git-send-email-wu.wubin@huawei.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
Adds a test case for AHCI wherein we write a 4K block of a changing pattern to sector 0, then read back that 4K and compare the transmit and receive buffers. Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Signed-off-by: NJohn Snow <jsnow@redhat.com> Message-id: 1423158090-25580-20-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
A minor sanity check to assert that the sector size is 512. The current block layer code deeply assumes that the IDE sector size will be 512 bytes, so we carry forward that assumption here. This is useful for the DMA tests, which currently assume that a sector will always be 512 bytes. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-19-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
Clean up guest memory being used in ahci_clean_mem, to be called during ahci_shutdown. With all guest memory leaks removed, add an option to the allocator to throw an assertion if a leak occurs. This test adds some sanity to both the AHCI library and the allocator. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-18-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
ahci_io is a wrapper around ahci_guest_io that takes a pointer to host memory instead, and will create a guest memory buffer and copy the data to/from as needed and as appropriate for a read/write command, such that after a read, the guest data will be in a host buffer, and for a write, the data will be transmitted to guest memory prior to the block operation. Now that we have all the syntactic sugar functions in place for AHCI, we can convert the identify test to be very, very short. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-17-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
ahci_guest_io is a shorthand function that will, in one shot, execute a data command on the guest to the specified guest buffer location, in the requested amount. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-16-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
Adds setters for size, prd_size and both via set_sizes. Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Signed-off-by: NJohn Snow <jsnow@redhat.com> Message-id: 1423158090-25580-15-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
Helps to verify that a command completed successfully. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-14-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
This patch adds the AHCICommand structure, and a set of functions to operate on the structure. ahci_command_create - Initialize and create a new AHCICommand in memory ahci_command_free - Destroy this object. ahci_command_set_buffer - Set where the guest memory DMA buffer is. ahci_command_commit - Write this command to the AHCI HBA. ahci_command_issue - Issue the committed command synchronously. ahci_command_issue_async - Issue the committed command asynchronously. ahci_command_wait - Wait for an asynchronous command to finish. ahci_command_slot - Get the number of the command slot we committed to. Helpers: size_to_prdtl - Calculate the required minimum PRDTL size from a buffer size. ahci_command_find - Given an ATA command mnemonic, look it up in the properties table to obtain info about the command. command_header_init - Initialize the command header with sane values. command_table_init - Initialize the command table with sane values. [Peter Maydell <peter.maydell@linaro.org> reported the following clang warning: tests/libqos/ahci.c:598:3: warning: redefinition of typedef 'AHCICommand' is a C11 feature [-Wtypedef-redefinition] } AHCICommand; I have replaced typedef struct ... AHCICommand; with struct ... ; --Stefan] Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Signed-off-by: NJohn Snow <jsnow@redhat.com> Message-id: 1423158090-25580-13-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
Add a structure that defines some properties of various IDE commands. These will be used to simplify the interface to the libqos AHCI calls, lessening the redundancy of specifying and respecifying properties of commands to various helper functions. Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Signed-off-by: NJohn Snow <jsnow@redhat.com> Message-id: 1423158090-25580-12-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
Similar to ahci_set_command_header, add a helper that takes an in-memory representation of a command FIS and writes it to guest memory, handling endianness as-needed. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Message-id: 1423158090-25580-11-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
Add human-readable command names and other miscellaneous #defines to help make the code more readable. Some of these definitions are not yet used in this current series, but for convenience and sanity they have been lumped together here, as it's more trouble than it is worth in a test suite to hand-pick, one-by-one, which preprocessor definitions are useful per-each test. These definitions include: ATA Command Mnemonics Current expected AHCI sector size FIS magic bytes REG_H2D_FIS flags Command Header flags Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Signed-off-by: NJohn Snow <jsnow@redhat.com> Message-id: 1423158090-25580-10-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
This patch adds a few helpers to help sanity-check the response of the AHCI device after a command. ahci_d2h_check_sanity inspects the D2H Register FIS, ahci_pio_check_sanity inspects the PIO Setup FIS, and ahci_cmd_check_sanity inspects the command header. To support the PIO sanity check, a new structure is added for the PIO Setup FIS type. Existing FIS types (H2D and D2H) have had their members renamed slightly to condense reserved members into fewer fields; and LBA fields are now represented by arrays of 8 byte chunks instead of independent variables. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-9-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
A simple helper that asserts a given port is not busy processing any commands via the TFD, Command Issue and SACT registers. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-8-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
A helper that compares a given port's current interrupts and checks them against a supplied list of expected interrupt bits, and throws an error if they do not match. The helper then resets the requested interrupts on this port, and asserts that the interrupt register is now empty. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-7-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
ahci_port_check_error checks a given port's error registers and asserts that everything from the port-level view is still OK. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-6-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
Adds command header helper functions: -ahci_command_header_set -ahci_command_header_get, -ahci_command_destroy, and -ahci_cmd_pick These helpers help to quickly manage the command header information in the AHCI device. ahci_command_header_set and get will store or retrieve an AHCI command header, respectively. ahci_cmd_pick chooses the first available but least recently used command slot to allow us to cycle through the available command slots. ahci_command_destroy obliterates all information contained within a given slot's command header, and frees its associated command table, but not its DMA buffer! Lastly, the command table pointer fields (dba and dbau) are merged into a single 64bit value to make managing 64bit tests simpler. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Message-id: 1423158090-25580-5-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
The structure name is a bit of a misnomer; the structure currently named command is actually the commandheader. A future patch in this series will add an actual "Command" structure, so we'll rename it now before the rest of the functions in this series try to use it. In addition, rename the "b1" and "b2" fields to be a unified uint16_t named "flags." Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Signed-off-by: NJohn Snow <jsnow@redhat.com> Message-id: 1423158090-25580-4-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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由 John Snow 提交于
Add a helper that assists in clearing out potentially old error and FIS information from an AHCI port's data structures. This ensures we always start with a blank slate for interrupt and FIS receipt information. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-3-git-send-email-jsnow@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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