diff options
| author | Markus Armbruster <armbru@redhat.com> | 2013-07-31 15:11:12 +0200 |
|---|---|---|
| committer | Anthony Liguori <anthony@codemonkey.ws> | 2013-09-12 11:45:32 -0500 |
| commit | 7f87af39dc786a979e7ebba338d0781e366060ed (patch) | |
| tree | 887d5456331af37a1cb007cc0ca731a162da97ac /hw/i386/pc_sysfw.c | |
| parent | 39228250ce6cf67eb1c3799791d271f53c5c6347 (diff) | |
pc_sysfw: Fix ISA BIOS init for ridiculously big flash
pc_isa_bios_init() suffers integer overflow for flash larger than
INT_MAX.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-id: 1375276272-15988-9-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
Diffstat (limited to 'hw/i386/pc_sysfw.c')
| -rw-r--r-- | hw/i386/pc_sysfw.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c index 8246a1bdd4..e917c83540 100644 --- a/hw/i386/pc_sysfw.c +++ b/hw/i386/pc_sysfw.c @@ -53,10 +53,7 @@ static void pc_isa_bios_init(MemoryRegion *rom_memory, flash_size = memory_region_size(flash_mem); /* map the last 128KB of the BIOS in ISA space */ - isa_bios_size = flash_size; - if (isa_bios_size > (128 * 1024)) { - isa_bios_size = 128 * 1024; - } + isa_bios_size = MIN(flash_size, 128 * 1024); isa_bios = g_malloc(sizeof(*isa_bios)); memory_region_init_ram(isa_bios, NULL, "isa-bios", isa_bios_size); vmstate_register_ram_global(isa_bios); |