Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fb1d84043ca73212b08ff57608f51b372529e6d6
Commit: fb1d84043ca73212b08ff57608f51b372529e6d6
Parent: 74260714c56de4f967fcb2f17a8656bc574b75be
Author: Jeremy Fitzhardinge <[EMAIL PROTECTED]>
AuthorDate: Tue Oct 16 11:51:31 2007 -0700
Committer: Jeremy Fitzhardinge <[EMAIL PROTECTED]>
CommitDate: Tue Oct 16 11:51:31 2007 -0700
xen: ask the hypervisor how much space it needs reserved
Ask the hypervisor how much space it needs reserved, since 32-on-64
doesn't need any space, and it may change in future.
Signed-off-by: Jeremy Fitzhardinge <[EMAIL PROTECTED]>
---
arch/x86/xen/enlighten.c | 13 ++++++++++++-
1 files changed, 12 insertions(+), 1 deletions(-)
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 4186cb6..bc7bf5f 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1112,6 +1112,17 @@ static const struct machine_ops __initdata
xen_machine_ops = {
};
+static void __init xen_reserve_top(void)
+{
+ unsigned long top = HYPERVISOR_VIRT_START;
+ struct xen_platform_parameters pp;
+
+ if (HYPERVISOR_xen_version(XENVER_platform_parameters, &pp) == 0)
+ top = pp.virt_start;
+
+ reserve_top_address(-top + 2 * PAGE_SIZE);
+}
+
/* First C function to be called on Xen boot */
asmlinkage void __init xen_start_kernel(void)
{
@@ -1169,7 +1180,7 @@ asmlinkage void __init xen_start_kernel(void)
pv_info.kernel_rpl = 0;
/* set the limit of our address space */
- reserve_top_address(-HYPERVISOR_VIRT_START + 2 * PAGE_SIZE);
+ xen_reserve_top();
/* set up basic CPUID stuff */
cpu_detect(&new_cpu_data);
-
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