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Re: [Qemu-devel] [PATCH 13/17] migration: Send the fd number which we ar
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH 13/17] migration: Send the fd number which we are going to use for this page |
Date: |
Fri, 3 Feb 2017 10:59:51 +0000 |
User-agent: |
Mutt/1.7.1 (2016-10-04) |
* Juan Quintela (address@hidden) wrote:
> We are still sending the page through the main channel, that would
> change later in the series
>
> Signed-off-by: Juan Quintela <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
> ---
> migration/ram.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/migration/ram.c b/migration/ram.c
> index 1267730..ca94704 100644
> --- a/migration/ram.c
> +++ b/migration/ram.c
> @@ -566,7 +566,7 @@ static int multifd_send_page(uint8_t *address)
> qemu_cond_signal(&multifd_send[i].cond);
> qemu_mutex_unlock(&multifd_send[i].mutex);
>
> - return 0;
> + return i;
> }
>
> struct MultiFDRecvParams {
> @@ -1083,6 +1083,7 @@ static int ram_multifd_page(QEMUFile *f,
> PageSearchStatus *pss,
> bool last_stage, uint64_t *bytes_transferred)
> {
> int pages;
> + uint16_t fd_num;
> uint8_t *p;
> RAMBlock *block = pss->block;
> ram_addr_t offset = pss->offset;
> @@ -1096,8 +1097,10 @@ static int ram_multifd_page(QEMUFile *f,
> PageSearchStatus *pss,
> if (pages == -1) {
> *bytes_transferred +=
> save_page_header(f, block, offset | RAM_SAVE_FLAG_MULTIFD_PAGE);
> + fd_num = multifd_send_page(p);
> + qemu_put_be16(f, fd_num);
> + *bytes_transferred += 2; /* size of fd_num */
> qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
> - multifd_send_page(p);
> *bytes_transferred += TARGET_PAGE_SIZE;
> pages = 1;
> acct_info.norm_pages++;
> @@ -2815,6 +2818,7 @@ static int ram_load(QEMUFile *f, void *opaque, int
> version_id)
> while (!postcopy_running && !ret && !(flags & RAM_SAVE_FLAG_EOS)) {
> ram_addr_t addr, total_ram_bytes;
> void *host = NULL;
> + uint16_t fd_num;
> uint8_t ch;
>
> addr = qemu_get_be64(f);
> @@ -2915,6 +2919,11 @@ static int ram_load(QEMUFile *f, void *opaque, int
> version_id)
> break;
>
> case RAM_SAVE_FLAG_MULTIFD_PAGE:
> + fd_num = qemu_get_be16(f);
> + if (fd_num != 0) {
> + /* this is yet an unused variable, changed later */
> + fd_num = fd_num;
> + }
> qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
> break;
>
> --
> 2.9.3
>
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK
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