[Xen-changelog] [xen staging] xen/arm: Rework p2m_cache_flush to take a range [begin, end)

[patchbot@xxxxxxx]

commit 5ec1bdf0c7dd42de0dc9c23694c5195830daf55d
Author:     Julien Grall <julien.grall@xxxxxxx>
AuthorDate: Wed Feb 21 14:18:43 2018 +0000
Commit:     Julien Grall <julien.grall@xxxxxxx>
CommitDate: Wed Dec 12 16:07:22 2018 +0000

    xen/arm: Rework p2m_cache_flush to take a range [begin, end)
    
    The function will be easier to re-use in a follow-up patch if you have
    only the begin and end.
    
    At the same time, rename the function to reflect the change in the
    prototype.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/arch/arm/domctl.c     | 2 +-
 xen/arch/arm/p2m.c        | 3 +--
 xen/include/asm-arm/p2m.h | 7 +++++--
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/xen/arch/arm/domctl.c b/xen/arch/arm/domctl.c
index 4587c75826..c10f568aad 100644
--- a/xen/arch/arm/domctl.c
+++ b/xen/arch/arm/domctl.c
@@ -61,7 +61,7 @@ long arch_do_domctl(struct xen_domctl *domctl, struct domain 
*d,
         if ( e < s )
             return -EINVAL;
 
-        return p2m_cache_flush(d, _gfn(s), domctl->u.cacheflush.nr_pfns);
+        return p2m_cache_flush_range(d, _gfn(s), _gfn(e));
     }
     case XEN_DOMCTL_bind_pt_irq:
     {
diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index 2706db3e67..836157292c 100644
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -1514,10 +1514,9 @@ int relinquish_p2m_mapping(struct domain *d)
     return rc;
 }
 
-int p2m_cache_flush(struct domain *d, gfn_t start, unsigned long nr)
+int p2m_cache_flush_range(struct domain *d, gfn_t start, gfn_t end)
 {
     struct p2m_domain *p2m = p2m_get_hostp2m(d);
-    gfn_t end = gfn_add(start, nr);
     gfn_t next_gfn;
     p2m_type_t t;
     unsigned int order;
diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h
index 13f7a27c38..5858f97e9c 100644
--- a/xen/include/asm-arm/p2m.h
+++ b/xen/include/asm-arm/p2m.h
@@ -228,8 +228,11 @@ int p2m_set_entry(struct p2m_domain *p2m,
 
 bool p2m_resolve_translation_fault(struct domain *d, gfn_t gfn);
 
-/* Clean & invalidate caches corresponding to a region of guest address space 
*/
-int p2m_cache_flush(struct domain *d, gfn_t start, unsigned long nr);
+/*
+ * Clean & invalidate caches corresponding to a region [start,end) of guest
+ * address space.
+ */
+int p2m_cache_flush_range(struct domain *d, gfn_t start, gfn_t end);
 
 /*
  * Map a region in the guest p2m with a specific p2m type.
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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