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[PATCH for-4.22] gnttab: drop dead local variable from gnttab_map_frame_begin()
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 16 Jun 2026 09:02:22 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
- Delivery-date: Tue, 16 Jun 2026 07:02:32 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
As Michal had indicated in review, status is now a variable that is set
but never read. I made the resulting change locally, but then committed a
stale version of the patch (also omitting Michal's R-b).
Amends: eff88c4d3543 ("gnttab: simplify (really: drop) gnttab_set_frame_gfn()")
Reported-by: Michal Orzel <michal.orzel@xxxxxxx>
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/common/grant_table.c
+++ b/xen/common/grant_table.c
@@ -4255,7 +4255,6 @@ int gnttab_map_frame_begin(
{
int rc = 0;
struct grant_table *gt = d->grant_table;
- bool status = false;
if ( gfn_eq(gfn, INVALID_GFN) )
{
@@ -4268,8 +4267,6 @@ int gnttab_map_frame_begin(
if ( evaluate_nospec(gt->gt_version == 2) && (idx &
XENMAPIDX_grant_table_status) )
{
idx &= ~XENMAPIDX_grant_table_status;
- status = true;
-
rc = gnttab_get_status_frame_mfn(d, idx, mfn);
}
else
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