[Xen-changelog] [xen staging] x86/mtrr: move is_var_mtrr_overlapped

[patchbot@xxxxxxx]

commit d6876bf23ddd85e160d87da74fb01001ff0b6509
Author:     Wei Liu <wei.liu2@xxxxxxxxxx>
AuthorDate: Fri Aug 17 16:12:38 2018 +0100
Commit:     Wei Liu <wei.liu2@xxxxxxxxxx>
CommitDate: Tue Aug 21 15:13:34 2018 +0100

    x86/mtrr: move is_var_mtrr_overlapped
    
    Move it to x86 generic code. While at it, use proper boolean type and
    fix some cosmetic issues.
    
    Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/cpu/mtrr/generic.c | 32 ++++++++++++++++++++++++++++++++
 xen/arch/x86/hvm/mtrr.c         | 31 -------------------------------
 xen/include/asm-x86/mtrr.h      |  2 +-
 3 files changed, 33 insertions(+), 32 deletions(-)

diff --git a/xen/arch/x86/cpu/mtrr/generic.c b/xen/arch/x86/cpu/mtrr/generic.c
index 09763654be..8f9cf1b1d7 100644
--- a/xen/arch/x86/cpu/mtrr/generic.c
+++ b/xen/arch/x86/cpu/mtrr/generic.c
@@ -51,6 +51,38 @@ get_fixed_ranges(mtrr_type * frs)
        }
 }
 
+bool is_var_mtrr_overlapped(const struct mtrr_state *m)
+{
+    unsigned int seg, i;
+    unsigned int num_var_ranges = MASK_EXTR(m->mtrr_cap, MTRRcap_VCNT);
+
+    for ( i = 0; i < num_var_ranges; i++ )
+    {
+        uint64_t base1 = m->var_ranges[i].base >> PAGE_SHIFT;
+        uint64_t mask1 = m->var_ranges[i].mask >> PAGE_SHIFT;
+
+        if ( !(m->var_ranges[i].mask & MTRR_PHYSMASK_VALID) )
+            continue;
+
+        for ( seg = i + 1; seg < num_var_ranges; seg++ )
+        {
+            uint64_t base2 = m->var_ranges[seg].base >> PAGE_SHIFT;
+            uint64_t mask2 = m->var_ranges[seg].mask >> PAGE_SHIFT;
+
+            if ( !(m->var_ranges[seg].mask & MTRR_PHYSMASK_VALID) )
+                continue;
+
+            if ( (base1 & mask1 & mask2) == (base2 & mask2 & mask1) )
+            {
+                /* MTRRs overlap. */
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
 void mtrr_save_fixed_ranges(void *info)
 {
        get_fixed_ranges(mtrr_state.fixed_ranges);
diff --git a/xen/arch/x86/hvm/mtrr.c b/xen/arch/x86/hvm/mtrr.c
index c502dda693..edfe5cd2b2 100644
--- a/xen/arch/x86/hvm/mtrr.c
+++ b/xen/arch/x86/hvm/mtrr.c
@@ -75,37 +75,6 @@ static uint8_t __read_mostly 
mtrr_epat_tbl[MTRR_NUM_TYPES][MEMORY_NUM_TYPES] =
 static uint8_t __read_mostly pat_entry_tbl[PAT_TYPE_NUMS] =
     { [0 ... PAT_TYPE_NUMS-1] = INVALID_MEM_TYPE };
 
-bool_t is_var_mtrr_overlapped(const struct mtrr_state *m)
-{
-    unsigned int seg, i;
-    unsigned int num_var_ranges = MASK_EXTR(m->mtrr_cap, MTRRcap_VCNT);
-
-    for ( i = 0; i < num_var_ranges; i++ )
-    {
-        uint64_t base1 = m->var_ranges[i].base >> PAGE_SHIFT;
-        uint64_t mask1 = m->var_ranges[i].mask >> PAGE_SHIFT;
-
-        if ( !(m->var_ranges[i].mask & MTRR_PHYSMASK_VALID) )
-            continue;
-
-        for ( seg = i + 1; seg < num_var_ranges; seg ++ )
-        {
-            uint64_t base2 = m->var_ranges[seg].base >> PAGE_SHIFT;
-            uint64_t mask2 = m->var_ranges[seg].mask >> PAGE_SHIFT;
-
-            if ( !(m->var_ranges[seg].mask & MTRR_PHYSMASK_VALID) )
-                continue;
-
-            if ( (base1 & mask1 & mask2) == (base2 & mask2 & mask1) )
-            {
-                /* MTRR is overlapped. */
-                return 1;
-            }
-        }
-    }
-    return 0;
-}
-
 static int __init hvm_mtrr_pat_init(void)
 {
     unsigned int i, j;
diff --git a/xen/include/asm-x86/mtrr.h b/xen/include/asm-x86/mtrr.h
index 72d0690e28..7edcb94479 100644
--- a/xen/include/asm-x86/mtrr.h
+++ b/xen/include/asm-x86/mtrr.h
@@ -95,7 +95,7 @@ extern bool_t mtrr_def_type_msr_set(struct domain *, struct 
mtrr_state *,
 extern void memory_type_changed(struct domain *);
 extern bool_t pat_msr_set(uint64_t *pat, uint64_t msr);
 
-bool_t is_var_mtrr_overlapped(const struct mtrr_state *m);
+bool is_var_mtrr_overlapped(const struct mtrr_state *m);
 bool mtrr_pat_not_equal(const struct vcpu *vd, const struct vcpu *vs);
 
 #endif /* __ASM_X86_MTRR_H__ */
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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