# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID 8ee4d4dac5520306da660a475b319ae9eb2f71d5
# Parent 0b0be946cf9c76dd0a6e6ececb056f73919a5513
[IA64] Found the lost memory
This patch can work around virtual memmap/discontig memory issues,
but memory gain may not be realized.
Signed-off-by: Anthony Xu <anthony.xu@xxxxxxxxx>
diff -r 0b0be946cf9c -r 8ee4d4dac552 xen/arch/ia64/xen/xensetup.c
--- a/xen/arch/ia64/xen/xensetup.c Tue Feb 28 17:29:30 2006
+++ b/xen/arch/ia64/xen/xensetup.c Tue Feb 28 19:02:50 2006
@@ -155,6 +155,24 @@
.parity = 'n',
.stop_bits = 1
};
+/* This is a wrapper function of init_domheap_pages,
+ * memory exceeds (max_page<<PAGE_SHIFT) will not be reclaimed.
+ * This function will go away when the virtual memmap/discontig
+ * memory issues are solved
+ */
+void init_domheap_pages_wrapper(unsigned long ps, unsigned long pe)
+{
+ unsigned long s_nrm, e_nrm, max_mem;
+ max_mem = (max_page+1)<<PAGE_SHIFT;
+ s_nrm = (ps+PAGE_SIZE-1)&PAGE_MASK;
+ e_nrm = pe&PAGE_MASK;
+ s_nrm = min(s_nrm, max_mem);
+ e_nrm = min(e_nrm, max_mem);
+ if(s_nrm < e_nrm)
+ init_domheap_pages(s_nrm, e_nrm);
+}
+
+
void start_kernel(void)
{
@@ -376,12 +394,14 @@
dom0->vcpu[0]->cpu_affinity = cpumask_of_cpu(0);
/* The stash space for the initial kernel image can now be freed up. */
- init_domheap_pages(ia64_boot_param->domain_start,
- ia64_boot_param->domain_size);
+ /* init_domheap_pages_wrapper is temporary solution, please refer to the
+ * descriptor of this function */
+ init_domheap_pages_wrapper(ia64_boot_param->domain_start,
+ ia64_boot_param->domain_start+ia64_boot_param->domain_size);
/* throw away initrd area passed from elilo */
if (ia64_boot_param->initrd_size) {
- init_domheap_pages(ia64_boot_param->initrd_start,
- ia64_boot_param->initrd_size);
+ init_domheap_pages_wrapper(ia64_boot_param->initrd_start,
+ ia64_boot_param->initrd_start+ia64_boot_param->initrd_size);
}
if (!running_on_sim) // slow on ski and pages are pre-initialized to zero
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