Ubuntu

  1. Bug #1745897
  2. Comment #0

Comment 0 for bug 1745897

Revision history for this message
quanxian (quanxian-wang) wrote :

Description:
Linux 4.15 introduces a new mmap flag MAP_SYNC, which can be used to guarantee the write persistence to mmap'ed files supporting DAX (e.g., files on ext4/xfs file system mounted with '-o dax').

QEMU can use MAP_SYNC flag for memory-backend-file, in order to guarantee the guest write persistence to backend files supporting DAX.

Target Kernel: QEMU 2.12
Target Release: 18.04