mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 02:01:24 +01:00
Marek Marczykowski-Górecki
e6472d4668
Linux 6.12-rc2 fails to decompress with the current 128MiB, contrary to
the code comment. It results in a failure like this:
domainbuilder: detail: xc_dom_kernel_file: filename="/var/lib/qubes/vm-kernels/6.12-rc2-1.1.fc37/vmlinuz"
domainbuilder: detail: xc_dom_malloc_filemap : 12104 kB
domainbuilder: detail: xc_dom_module_file: filename="/var/lib/qubes/vm-kernels/6.12-rc2-1.1.fc37/initramfs"
domainbuilder: detail: xc_dom_malloc_filemap : 7711 kB
domainbuilder: detail: xc_dom_boot_xen_init: ver 4.19, caps xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
domainbuilder: detail: xc_dom_parse_image: called
domainbuilder: detail: xc_dom_find_loader: trying multiboot-binary loader ...
domainbuilder: detail: loader probe failed
domainbuilder: detail: xc_dom_find_loader: trying HVM-generic loader ...
domainbuilder: detail: loader probe failed
domainbuilder: detail: xc_dom_find_loader: trying Linux bzImage loader ...
domainbuilder: detail: _xc_try_lzma_decode: XZ decompression error: Memory usage limit reached
xc: error: panic: xg_dom_bzimageloader.c:761: xc_dom_probe_bzimage_kernel unable to XZ decompress kernel: Invalid kernel
domainbuilder: detail: loader probe failed
domainbuilder: detail: xc_dom_find_loader: trying ELF-generic loader ...
domainbuilder: detail: loader probe failed
xc: error: panic: xg_dom_core.c:689: xc_dom_find_loader: no loader found: Invalid kernel
libxl: error: libxl_dom.c:566:libxl__build_dom: xc_dom_parse_image failed
The important part: XZ decompression error: Memory usage limit reached
This looks to be related to the following change in Linux:
8653c909922743bceb4800e5cc26087208c9e0e6 ("xz: use 128 MiB dictionary and force single-threaded mode")
Fix this by increasing the block size to 256MiB. And remove the
misleading comment (from lack of better ideas).
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Anthony PERARD <anthony.perard@vates.tech>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>