Anatol Belski 4772235952 block: qcow: Fix O_DIRECT EINVAL in async io_uring path ...

Override AsyncIo::alignment() to report the actual device sector
size so that execute_async() correctly bounces misaligned guest
memory pointers.

Guard the io_uring fast path in resolve_read() with an alignment
check. When O_DIRECT is active, guest requests can have I/O sizes
smaller than the device sector size (e.g. 512 byte UEFI reads on
a 4096 byte sector device). The kernel rejects these with EINVAL.
Route such reads through scatter_read_sync() which uses AlignedBuf
and aligned_pread to satisfy O_DIRECT size and offset requirements.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>

2026-04-17 08:16:47 +00:00

..

qcow

block: qcow: Expose RawFile alignment as a public accessor

2026-04-15 17:28:58 +00:00

vhdx

block: add DiskFile::physical_size()

2025-12-14 17:02:36 +00:00

async_io.rs

block: Add DiskFileError::Clone variant

2026-03-30 22:14:42 +00:00

disk_file.rs

block: disk_file: Add DiskBackend dispatch enum

2026-03-19 22:29:27 +00:00

error.rs

block: qcow: Remove From<qcow::Error> for BlockError

2026-03-20 22:21:24 +00:00

fcntl.rs

vmm: Fix OpenAPI definition of for lock granularity

2026-03-12 02:10:43 +00:00

fixed_vhd_async.rs

block: vhd: Remove legacy async_io::DiskFile impl from FixedVhdDiskAsync

2026-03-30 22:16:04 +00:00

fixed_vhd_sync.rs

block: vhd: Remove legacy async_io::DiskFile impl from FixedVhdDiskSync

2026-03-30 22:18:09 +00:00

fixed_vhd.rs

block: add DiskFile::physical_size()

2025-12-14 17:02:36 +00:00

lib.rs

misc: return errors from IOMMU address translation instead of panicking

2026-04-14 23:25:03 +00:00

qcow_async.rs

block: qcow: Fix O_DIRECT EINVAL in async io_uring path

2026-04-17 08:16:47 +00:00

qcow_common.rs

block: qcow: Add aligned bounce buffers for O_DIRECT I/O

2026-04-15 17:28:58 +00:00

qcow_sync.rs

block: qcow: Add AlignedBuf size rounding test

2026-04-15 17:28:58 +00:00

raw_async_aio.rs

block: Return BlockResult from RawFileAsyncAio::new()

2026-04-02 01:18:30 +00:00

raw_async_io_tests.rs

block: Add raw_async_io_tests shared test helpers

2026-03-14 13:39:41 +00:00

raw_async.rs

block: Fix resize for block device backends

2026-04-17 07:57:35 +00:00

raw_sync.rs

block: Remove legacy DiskFile impl from RawFileDiskSync

2026-03-30 22:15:31 +00:00

vhd.rs

tests: streamline module names to unit_tests

2025-11-20 21:15:03 +00:00

vhdx_sync.rs

block: vhdx: Remove legacy async_io::DiskFile impl from VhdxDiskSync

2026-03-30 22:17:01 +00:00