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[Qemu-devel] [RFC 11/12] Use qemu_put_buffer_no_copy for guest memory pa
From: |
Orit Wasserman |
Subject: |
[Qemu-devel] [RFC 11/12] Use qemu_put_buffer_no_copy for guest memory pages |
Date: |
Thu, 21 Mar 2013 11:09:30 +0200 |
This will remove an unneeded copy of guest memory pages.
For the page header and device state we still copy the data to the
static buffer the other option is to allocate the memory on demand
which is more expensive.
Signed-off-by: Orit Wasserman <address@hidden>
---
arch_init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch_init.c b/arch_init.c
index 98e2bc6..27b53eb 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -481,7 +481,7 @@ static int ram_save_block(QEMUFile *f, bool last_stage)
/* XBZRLE overflow or normal page */
if (bytes_sent == -1) {
bytes_sent = save_block_hdr(f, block, offset, cont,
RAM_SAVE_FLAG_PAGE);
- qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
+ qemu_put_buffer_no_copy(f, p, TARGET_PAGE_SIZE);
bytes_sent += TARGET_PAGE_SIZE;
acct_info.norm_pages++;
}
--
1.7.11.7
- Re: [Qemu-devel] [RFC 07/12] Store the data to send also in iovec, (continued)
[Qemu-devel] [RFC 11/12] Use qemu_put_buffer_no_copy for guest memory pages,
Orit Wasserman <=
[Qemu-devel] [RFC 12/12] Bye Bye put_buffer, Orit Wasserman, 2013/03/21
Re: [Qemu-devel] [RFC 00/12] Migration: Remove copying of guest ram pages, Paolo Bonzini, 2013/03/21
Re: [Qemu-devel] [RFC 00/12] Migration: Remove copying of guest ram pages, Michael S. Tsirkin, 2013/03/21