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From 325f2d5f89e8275844a08c5fd0ea0e2ebe4874ca Mon Sep 17 00:00:00 2001
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Message-Id: <325f2d5f89e8275844a08c5fd0ea0e2ebe4874ca.1387382496.git.minovotn@redhat.com>
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In-Reply-To: <c5386144fbf09f628148101bc674e2421cdd16e3.1387382496.git.minovotn@redhat.com>
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References: <c5386144fbf09f628148101bc674e2421cdd16e3.1387382496.git.minovotn@redhat.com>
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From: Nigel Croxon <ncroxon@redhat.com>
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Date: Thu, 14 Nov 2013 22:53:16 +0100
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Subject: [PATCH 40/46] migration: ram_handle_compressed
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RH-Author: Nigel Croxon <ncroxon@redhat.com>
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Message-id: <1384469598-13137-41-git-send-email-ncroxon@redhat.com>
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Patchwork-id: 55727
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O-Subject: [RHEL7.0 PATCH 40/42] migration: ram_handle_compressed
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Bugzilla: 1011720
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RH-Acked-by: Orit Wasserman <owasserm@redhat.com>
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RH-Acked-by: Amit Shah <amit.shah@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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Bugzilla: 1011720
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https://bugzilla.redhat.com/show_bug.cgi?id=1011720
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>From commit ID:
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commit d613a56f845788412a442c6b5aff88b38244f99a
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Author: Isaku Yamahata <yamahata@private.email.ne.jp>
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Date: Sat Sep 21 01:23:37 2013 +0900
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migration: ram_handle_compressed
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ram_handle_compressed() should be aware of size > TARGET_PAGE_SIZE.
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migration-rdma can call it with larger size.
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Signed-off-by: Isaku Yamahata <yamahata@private.email.ne.jp>
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Signed-off-by: Juan Quintela <quintela@redhat.com>
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---
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arch_init.c | 11 ++++++-----
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1 files changed, 6 insertions(+), 5 deletions(-)
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Signed-off-by: Michal Novotny <minovotn@redhat.com>
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---
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arch_init.c | 11 ++++++-----
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1 file changed, 6 insertions(+), 5 deletions(-)
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diff --git a/arch_init.c b/arch_init.c
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index 5ce9c61..d71fb33 100644
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--- a/arch_init.c
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+++ b/arch_init.c
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@@ -848,13 +848,14 @@ static inline void *host_from_stream_offset(QEMUFile *f,
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*/
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void ram_handle_compressed(void *host, uint8_t ch, uint64_t size)
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{
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- if (ch != 0 || !is_zero_range(host, TARGET_PAGE_SIZE)) {
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+ if (ch != 0 || !is_zero_range(host, size)) {
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memset(host, ch, size);
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#ifndef _WIN32
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- if (ch == 0 &&
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- (!kvm_enabled() || kvm_has_sync_mmu()) &&
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- getpagesize() <= TARGET_PAGE_SIZE) {
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- qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
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+ if (ch == 0 && (!kvm_enabled() || kvm_has_sync_mmu())) {
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+ size = size & ~(getpagesize() - 1);
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+ if (size > 0) {
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+ qemu_madvise(host, size, QEMU_MADV_DONTNEED);
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+ }
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}
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#endif
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}
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--
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1.7.11.7
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