diff options
Diffstat (limited to 'pc-bios/bios-pq/0019-bios-fix-multiple-calls.patch')
| -rw-r--r-- | pc-bios/bios-pq/0019-bios-fix-multiple-calls.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/pc-bios/bios-pq/0019-bios-fix-multiple-calls.patch b/pc-bios/bios-pq/0019-bios-fix-multiple-calls.patch new file mode 100644 index 0000000000..cfa4c13093 --- /dev/null +++ b/pc-bios/bios-pq/0019-bios-fix-multiple-calls.patch @@ -0,0 +1,35 @@ +bios: Fix multiple calls into smbios_load_ex + +We're marking the used entry bitmap in smbios_load_external() for each +type we check, regardless of whether we loaded anything. This makes +subsequent calls behave as if we've already loaded the tables from qemu +and can result in missing tables (ex. multiple type4 entries on an SMP +guest). Only mark the bitmap if we actually load something. + +Signed-off-by: Alex Williamson <alex.williamson@hp.com> +Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> + +diff --git a/bios/rombios32.c b/bios/rombios32.c +index f861f81..c869798 100644 +--- a/bios/rombios32.c ++++ b/bios/rombios32.c +@@ -2554,13 +2554,14 @@ smbios_load_external(int type, char **p, unsigned *nr_structs, + *max_struct_size = *p - (char *)header; + } + +- /* Mark that we've reported on this type */ +- used_bitmap[(type >> 6) & 0x3] |= (1ULL << (type & 0x3f)); ++ if (start != *p) { ++ /* Mark that we've reported on this type */ ++ used_bitmap[(type >> 6) & 0x3] |= (1ULL << (type & 0x3f)); ++ return 1; ++ } + +- return (start != *p); +-#else /* !BX_QEMU */ ++#endif /* !BX_QEMU */ + return 0; +-#endif + } + + void smbios_init(void) |