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From c964e085dac5d2e47974f1275a0557ec841aeaba Mon Sep 17 00:00:00 2001
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Message-Id: <c964e085dac5d2e47974f1275a0557ec841aeaba.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 22:53:15 +0100
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Subject: [PATCH 39/46] arch_init: make is_zero_page accept size
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RH-Author: Nigel Croxon <ncroxon@redhat.com>
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Message-id: <1384469598-13137-40-git-send-email-ncroxon@redhat.com>
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Patchwork-id: 55717
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O-Subject: [RHEL7.0 PATCH 39/42] arch_init: make is_zero_page accept size
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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 dc3c26a479e5bd19c1b3c04f696b8f70ad57f0b7
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Author: Isaku Yamahata <yamahata@private.email.ne.jp>
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Date: Sat Sep 21 01:23:36 2013 +0900
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arch_init: make is_zero_page accept size
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Later is_zero_page will be used for non TARGET_PAGE_SIZE
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range.
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And rename it to is_zero_range as it isn't page size any more.
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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 | 9 ++++-----
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1 files changed, 4 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 | 9 ++++-----
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1 file changed, 4 insertions(+), 5 deletions(-)
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diff --git a/arch_init.c b/arch_init.c
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index 26d0374..5ce9c61 100644
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--- a/arch_init.c
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+++ b/arch_init.c
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@@ -150,10 +150,9 @@ int qemu_read_default_config_files(bool userconfig)
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return 0;
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}
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-static inline bool is_zero_page(uint8_t *p)
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+static inline bool is_zero_range(uint8_t *p, uint64_t size)
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{
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- return buffer_find_nonzero_offset(p, TARGET_PAGE_SIZE) ==
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- TARGET_PAGE_SIZE;
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+ return buffer_find_nonzero_offset(p, size) == size;
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}
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/* struct contains XBZRLE cache and a static page
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@@ -497,7 +496,7 @@ static int ram_save_block(QEMUFile *f, bool last_stage)
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acct_info.dup_pages++;
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}
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}
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- } else if (is_zero_page(p)) {
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+ } else if (is_zero_range(p, TARGET_PAGE_SIZE)) {
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acct_info.dup_pages++;
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bytes_sent = save_block_hdr(f, block, offset, cont,
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RAM_SAVE_FLAG_COMPRESS);
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@@ -849,7 +848,7 @@ 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_page(host)) {
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+ if (ch != 0 || !is_zero_range(host, TARGET_PAGE_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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--
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1.7.11.7
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