From: kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk>
Date: Fri, 9 Jun 2006 15:18:40 +0000 (+0100)
Subject: [LINUX][X86/64] Initialise pages outside initial allocation so that
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~15972^2~25
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=876b2167795dec7a3f51a458ef8359e62cff1bc8;p=xen.git

[LINUX][X86/64] Initialise pages outside initial allocation so that
they are picked up by the balloon driver.
From: Jan Beulich
Signed-off-by: Keir Fraser <keir@xensource.com>
---

diff --git a/linux-2.6-xen-sparse/arch/x86_64/mm/init-xen.c b/linux-2.6-xen-sparse/arch/x86_64/mm/init-xen.c
index fe41bfacc3..4ee3b3b1df 100644
--- a/linux-2.6-xen-sparse/arch/x86_64/mm/init-xen.c
+++ b/linux-2.6-xen-sparse/arch/x86_64/mm/init-xen.c
@@ -882,6 +882,7 @@ static struct kcore_list kcore_mem, kcore_vmalloc, kcore_kernel, kcore_modules,
 void __init mem_init(void)
 {
 	long codesize, reservedpages, datasize, initsize;
+	unsigned long pfn;
 
 	contiguous_bitmap = alloc_bootmem_low_pages(
 		(end_pfn + 2*BITS_PER_LONG) >> 3);
@@ -910,6 +911,12 @@ void __init mem_init(void)
 #else
 	totalram_pages = free_all_bootmem();
 #endif
+	/* XEN: init and count pages outside initial allocation. */
+	for (pfn = xen_start_info->nr_pages; pfn < max_pfn; pfn++) {
+		ClearPageReserved(&mem_map[pfn]);
+		set_page_count(&mem_map[pfn], 1);
+		totalram_pages++;
+	}
 	reservedpages = end_pfn - totalram_pages - e820_hole_size(0, end_pfn);
 
 	after_bootmem = 1;