[v2,0/1] fallocate missing fd_offset

Message

“William Roche Jan. 21, 2025, 10:54 p.m. UTC

From: William Roche <[e-mail]>

Working on the poisoned memory recovery mechanisms with David
Hildenbrand, it appeared that the file hole punching done with
the memory discard functions are missing the file offset value
fd_offset to correctly modify the right file location.

Note that guest_memfd would not currently take into account
fd_offset, so I'm adding a comment next to the fallocate use
in ram_block_discard_guest_memfd_range().

This version is also checkpatch.pl clean
make check runs fine on both ARM and x86

v1->v2
  . replacing the ram_block_discard_guest_memfd_range()
    modifications with a comment
  . use a local variable for the global file offset


William Roche (1):
  system/physmem: take into account fd_offset for file fallocate

 system/physmem.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)