[Xen-devel] [PATCH] hvmloader: pci range cache policy

[Jean Guyader <jean.guyader@xxxxxxxxxxxxx>]

hvmloader: pci range cache policy

Use frame number instead address when we write the msr for the mtrr of 
the pci range.
Signed-off-by: Jean Guyader <jean.guyader@xxxxxxxxxxxxx>

diff -r ef7525e87030 tools/firmware/hvmloader/cacheattr.c
--- a/tools/firmware/hvmloader/cacheattr.c      Fri May 23 11:58:08 2008 +0100
+++ b/tools/firmware/hvmloader/cacheattr.c      Fri May 23 15:53:32 2008 +0100
@@ -89,9 +89,9 @@ void cacheattr_init(void)
     if ( nr_var_ranges != 0 )
     {
         /* A single UC range covering PCI space. */
-        wrmsr(MSR_MTRRphysBase(0), PCI_MEMBASE);
+        wrmsr(MSR_MTRRphysBase(0), PCI_MEMBASE >> PAGE_SHIFT);
         wrmsr(MSR_MTRRphysMask(0),
-              ((uint64_t)(int32_t)PCI_MEMBASE & addr_mask) | (1u << 11));
+              (((uint64_t)(int32_t)PCI_MEMBASE & addr_mask) | (1u << 11)) >> 
PAGE_SHIFT);
         printf("var MTRRs ... ");
     }
 
diff -r ef7525e87030 tools/firmware/hvmloader/util.h
--- a/tools/firmware/hvmloader/util.h   Fri May 23 11:58:08 2008 +0100
+++ b/tools/firmware/hvmloader/util.h   Fri May 23 15:53:32 2008 +0100
@@ -9,6 +9,8 @@
 
 #undef NULL
 #define NULL ((void*)0)
+
+#define PAGE_SHIFT      12
 
 void __assert_failed(char *assertion, char *file, int line)
     __attribute__((noreturn));

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