47 lines
1.7 KiB
Diff
47 lines
1.7 KiB
Diff
From 069ad2e6d5ce48c96519ff55ace2ca2bcdac94d5 Mon Sep 17 00:00:00 2001
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From: qihao <qihao_yewu@cmss.chinamobile.com>
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Date: Thu, 27 Jul 2023 13:26:21 +0800
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Subject: [PATCH] migration/ram: Fix populate_read_range()
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cheery-pick from 5f19a4491941fdc5c5b50ce4ade6ffffe0f591b4
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Unfortunately, commit f7b9dcfbcf44 broke populate_read_range(): the loop
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end condition is very wrong, resulting in that function not populating the
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full range. Lets' fix that.
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Fixes: f7b9dcfbcf44 ("migration/ram: Factor out populating pages readable in ram_block_populate_pages()")
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Cc: qemu-stable@nongnu.org
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Reviewed-by: Peter Xu <peterx@redhat.com>
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Reviewed-by: Juan Quintela <quintela@redhat.com>
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Signed-off-by: David Hildenbrand <david@redhat.com>
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Signed-off-by: Juan Quintela <quintela@redhat.com>
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Signed-off-by: qihao_yewu <qihao_yewu@cmss.chinamobile.com>
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---
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migration/ram.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/migration/ram.c b/migration/ram.c
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index 12b8c653d8..444b6a7aa2 100644
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--- a/migration/ram.c
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+++ b/migration/ram.c
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@@ -2020,13 +2020,15 @@ out:
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static inline void populate_read_range(RAMBlock *block, ram_addr_t offset,
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ram_addr_t size)
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{
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+ const ram_addr_t end = offset + size;
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+
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/*
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* We read one byte of each page; this will preallocate page tables if
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* required and populate the shared zeropage on MAP_PRIVATE anonymous memory
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* where no page was populated yet. This might require adaption when
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* supporting other mappings, like shmem.
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*/
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- for (; offset < size; offset += block->page_size) {
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+ for (; offset < end; offset += block->page_size) {
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char tmp = *((char *)block->host + offset);
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/* Don't optimize the read out */
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--
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2.41.0.windows.1
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