From: Keir Fraser <keir.fraser@citrix.com>
Date: Tue, 20 Jan 2009 13:57:20 +0000 (+0000)
Subject: x86_32: Get rid of xenheap_phys_start as it is zero after start of day.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14014^2~44
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=dcc70f51c7f9692b43ef6b05826cbcedf2fedef3;p=xen.git

x86_32: Get rid of xenheap_phys_start as it is zero after start of day.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
---

diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 34609ca8cd..04efdc3644 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -98,7 +98,7 @@ unsigned long xen_phys_start;
 
 #ifdef CONFIG_X86_32
 /* Limits of Xen heap, used to initialise the allocator. */
-unsigned long xenheap_phys_start, xenheap_phys_end;
+unsigned long xenheap_initial_phys_start, xenheap_phys_end;
 #endif
 
 extern void arch_init_memory(void);
@@ -741,8 +741,8 @@ void __init __start_xen(unsigned long mbi_p)
     /* Initialise boot heap. */
     allocator_bitmap_end = init_boot_allocator(__pa(&_end));
 #if defined(CONFIG_X86_32)
-    xenheap_phys_start = allocator_bitmap_end;
-    xenheap_phys_end   = DIRECTMAP_MBYTES << 20;
+    xenheap_initial_phys_start = allocator_bitmap_end;
+    xenheap_phys_end = DIRECTMAP_MBYTES << 20;
 #else
     if ( !xen_phys_start )
         EARLY_FAIL("Not enough memory to relocate Xen.\n");
@@ -841,9 +841,8 @@ void __init __start_xen(unsigned long mbi_p)
 
 #if defined(CONFIG_X86_32)
     /* Initialise the Xen heap. */
-    init_xenheap_pages(xenheap_phys_start, xenheap_phys_end);
-    nr_pages = (xenheap_phys_end - xenheap_phys_start) >> PAGE_SHIFT;
-    xenheap_phys_start = xen_phys_start;
+    init_xenheap_pages(xenheap_initial_phys_start, xenheap_phys_end);
+    nr_pages = (xenheap_phys_end - xenheap_initial_phys_start) >> PAGE_SHIFT;
     printk("Xen heap: %luMB (%lukB)\n", 
            nr_pages >> (20 - PAGE_SHIFT),
            nr_pages << (PAGE_SHIFT - 10));
@@ -1094,7 +1093,7 @@ void arch_get_xen_caps(xen_capabilities_info_t *info)
 int xen_in_range(paddr_t start, paddr_t end)
 {
 #if defined(CONFIG_X86_32)
-    paddr_t xs = xenheap_phys_start;
+    paddr_t xs = 0;
     paddr_t xe = xenheap_phys_end;
 #else
     paddr_t xs = __pa(&_start);
diff --git a/xen/arch/x86/x86_32/mm.c b/xen/arch/x86/x86_32/mm.c
index d19f04f9f0..3d266b28bd 100644
--- a/xen/arch/x86/x86_32/mm.c
+++ b/xen/arch/x86/x86_32/mm.c
@@ -43,7 +43,7 @@ static unsigned long mpt_size;
 void *alloc_xen_pagetable(void)
 {
     extern int early_boot;
-    extern unsigned long xenheap_phys_start;
+    extern unsigned long xenheap_initial_phys_start;
     unsigned long mfn;
 
     if ( !early_boot )
@@ -53,8 +53,8 @@ void *alloc_xen_pagetable(void)
         return v;
     }
 
-    mfn = xenheap_phys_start >> PAGE_SHIFT;
-    xenheap_phys_start += PAGE_SIZE;
+    mfn = xenheap_initial_phys_start >> PAGE_SHIFT;
+    xenheap_initial_phys_start += PAGE_SIZE;
     return mfn_to_virt(mfn);
 }
 
diff --git a/xen/include/asm-x86/config.h b/xen/include/asm-x86/config.h
index 51337c0b79..9d140ef891 100644
--- a/xen/include/asm-x86/config.h
+++ b/xen/include/asm-x86/config.h
@@ -339,7 +339,7 @@ extern unsigned int video_mode, video_flags;
 #ifndef __ASSEMBLY__
 extern unsigned long xen_phys_start;
 #if defined(__i386__)
-extern unsigned long xenheap_phys_start, xenheap_phys_end;
+extern unsigned long xenheap_phys_end;
 #endif
 #endif
 
diff --git a/xen/include/asm-x86/mm.h b/xen/include/asm-x86/mm.h
index b10e548db2..a51b4a803e 100644
--- a/xen/include/asm-x86/mm.h
+++ b/xen/include/asm-x86/mm.h
@@ -153,8 +153,7 @@ struct page_info
 #define is_xen_heap_page(page) is_xen_heap_mfn(page_to_mfn(page))
 #define is_xen_heap_mfn(mfn) ({                         \
     unsigned long _mfn = (mfn);                         \
-    ((_mfn >= paddr_to_pfn(xenheap_phys_start)) &&      \
-     (_mfn < paddr_to_pfn(xenheap_phys_end)));          \
+    (_mfn < paddr_to_pfn(xenheap_phys_end));            \
 })
 #else
 #define is_xen_heap_page(page) ((page)->count_info & PGC_xen_heap)