diff options
Diffstat (limited to 'arch/x86/kernel/resource.c')
| -rw-r--r-- | arch/x86/kernel/resource.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86/kernel/resource.c b/arch/x86/kernel/resource.c index 2a26819bb6a..80eab01c1a6 100644 --- a/arch/x86/kernel/resource.c +++ b/arch/x86/kernel/resource.c @@ -37,10 +37,12 @@ static void remove_e820_regions(struct resource *avail) void arch_remove_reservations(struct resource *avail) { - /* Trim out BIOS areas (low 1MB and high 2MB) and E820 regions */ + /* + * Trim out BIOS area (high 2MB) and E820 regions. We do not remove + * the low 1MB unconditionally, as this area is needed for some ISA + * cards requiring a memory range, e.g. the i82365 PCMCIA controller. + */ if (avail->flags & IORESOURCE_MEM) { - if (avail->start < BIOS_END) - avail->start = BIOS_END; resource_clip(avail, BIOS_ROM_BASE, BIOS_ROM_END); remove_e820_regions(avail); |