[Xen-changelog] [xen staging] xen/arm: domctl: Use typesafe gfn in XEN_DOMCTL_cacheflush

[patchbot@xxxxxxx]

commit 9c35572f359cd6f71aa20b0991c74e032b8721d2
Author:     Julien Grall <julien.grall@xxxxxxx>
AuthorDate: Thu Nov 29 19:14:43 2018 +0000
Commit:     Julien Grall <julien.grall@xxxxxxx>
CommitDate: Wed Dec 12 16:09:31 2018 +0000

    xen/arm: domctl: Use typesafe gfn in XEN_DOMCTL_cacheflush
    
    This will make changes in a follow-up patch easier.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/arch/arm/domctl.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/xen/arch/arm/domctl.c b/xen/arch/arm/domctl.c
index c10f568aad..20691528a6 100644
--- a/xen/arch/arm/domctl.c
+++ b/xen/arch/arm/domctl.c
@@ -52,16 +52,16 @@ long arch_do_domctl(struct xen_domctl *domctl, struct 
domain *d,
     {
     case XEN_DOMCTL_cacheflush:
     {
-        unsigned long s = domctl->u.cacheflush.start_pfn;
-        unsigned long e = s + domctl->u.cacheflush.nr_pfns;
+        gfn_t s = _gfn(domctl->u.cacheflush.start_pfn);
+        gfn_t e = gfn_add(s, domctl->u.cacheflush.nr_pfns);
 
         if ( domctl->u.cacheflush.nr_pfns > (1U<<MAX_ORDER) )
             return -EINVAL;
 
-        if ( e < s )
+        if ( gfn_x(e) < gfn_x(s) )
             return -EINVAL;
 
-        return p2m_cache_flush_range(d, _gfn(s), _gfn(e));
+        return p2m_cache_flush_range(d, s, e);
     }
     case XEN_DOMCTL_bind_pt_irq:
     {
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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