[Xen-devel] [PATCH] x86: make sure memory block is RAM before passing to the allocator

["Jan Beulich" <JBeulich@xxxxxxxx>]

Memory blocks outside of the always visible 1:1 mapping range get
passed to the allocator separately (once enough other setup was done).
Skipping non-RAM regions, however, was forgotten in adc5afbf ("x86:
support up to 16Tb").

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1155,6 +1155,8 @@ void __init __start_xen(unsigned long mb
         {
             uint64_t s, e;
 
+            if ( boot_e820.map[i].type != E820_RAM )
+                continue;
             s = (boot_e820.map[i].addr + mask) & ~mask;
             e = (boot_e820.map[i].addr + boot_e820.map[i].size) & ~mask;
             if ( PFN_DOWN(e) <= limit )

Attachment: x86-extra-mem-check-RAM.patch
Description: Text document

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