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

..

src

block: qcow: Fix O_DIRECT EINVAL in async io_uring path

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

Cargo.toml

misc: make MSRV workspace-wide for cloud-hypervisor dependencies

2026-03-13 01:30:25 +00:00