From 1f7cb73592a1922b3a981eb3232098281e07679f Mon Sep 17 00:00:00 2001
From: Janosch Frank <frankja@linux.ibm.com>
Date: Thu, 11 Aug 2022 12:10:59 +0000
Subject: [PATCH 27/42] dump: Rework dump_calculate_size function
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RH-Author: Cédric Le Goater <clg@redhat.com>
RH-MergeRequest: 226: s390: Enhanced Interpretation for PCI Functions and Secure Execution guest dump
RH-Bugzilla: 1664378 2043909
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Jon Maloy <jmaloy@redhat.com>
RH-Commit: [27/41] eaa05c39109b57a119752ad3df66f4c2ace2cbe4

dump_calculate_size() sums up all the sizes of the guest memory
blocks. Since we already have a function that calculates the size of a
single memory block (dump_get_memblock_size()) we can simply iterate
over the blocks and use the function instead of calculating the size
ourselves.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Message-Id: <20220811121111.9878-7-frankja@linux.ibm.com>
(cherry picked from commit c370d5300f9ac1f90f8158082d22262b904fe30e)
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
 dump/dump.c | 22 ++++++++--------------
 1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/dump/dump.c b/dump/dump.c
index f6fe13e258..902a85ef8e 100644
--- a/dump/dump.c
+++ b/dump/dump.c
@@ -1557,25 +1557,19 @@ bool dump_in_progress(void)
     return (qatomic_read(&state->status) == DUMP_STATUS_ACTIVE);
 }
 
-/* calculate total size of memory to be dumped (taking filter into
- * acoount.) */
+/*
+ * calculate total size of memory to be dumped (taking filter into
+ * account.)
+ */
 static int64_t dump_calculate_size(DumpState *s)
 {
     GuestPhysBlock *block;
-    int64_t size = 0, total = 0, left = 0, right = 0;
+    int64_t total = 0;
 
     QTAILQ_FOREACH(block, &s->guest_phys_blocks.head, next) {
-        if (dump_has_filter(s)) {
-            /* calculate the overlapped region. */
-            left = MAX(s->filter_area_begin, block->target_start);
-            right = MIN(s->filter_area_begin + s->filter_area_length, block->target_end);
-            size = right - left;
-            size = size > 0 ? size : 0;
-        } else {
-            /* count the whole region in */
-            size = (block->target_end - block->target_start);
-        }
-        total += size;
+        total += dump_filtered_memblock_size(block,
+                                             s->filter_area_begin,
+                                             s->filter_area_length);
     }
 
     return total;
-- 
2.37.3