aboutsummaryrefslogtreecommitdiff
path: root/arch/x86/kernel/setup.c
diff options
context:
space:
mode:
authorBjorn Helgaas <bjorn.helgaas@hp.com>2010-10-26 15:41:49 -0600
committerJesse Barnes <jbarnes@virtuousgeek.org>2010-10-26 15:33:44 -0700
commit419afdf53cca794a190014593b4778e2e9d64cf3 (patch)
tree5d26321ffa10a004c71cc428f1f33f9bb6053602 /arch/x86/kernel/setup.c
parentdc9887dc02e37bcf83f4e792aa14b07782ef54cf (diff)
x86: update iomem_resource end based on CPU physical address capabilities
The iomem_resource map reflects the available physical address space. We statically initialize the end to -1, i.e., 0xffffffff_ffffffff, but of course we can only use as much as the CPU can address. This patch updates the end based on the CPU capabilities, so we don't mistakenly allocate space that isn't usable, as we're likely to do when allocating from the top-down. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86/kernel/setup.c')
-rw-r--r--arch/x86/kernel/setup.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index c3a4fbb2b99..922b5a1f978 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -788,6 +788,7 @@ void __init setup_arch(char **cmdline_p)
x86_init.oem.arch_setup();
+ iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1;
setup_memory_map();
parse_setup_data();
/* update the e820_saved too */