forked from rpms/qemu-kvm
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
3.4 KiB
95 lines
3.4 KiB
2 years ago
|
From ab6262bd4829e3bd6437fe32737209df2af2d141 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Juan Quintela <quintela@redhat.com>
|
||
|
|
Date: Wed, 18 May 2022 02:52:23 -0300
|
||
|
|
Subject: [PATCH 08/37] multifd: Make zstd compression method not use iovs
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Type: text/plain; charset=UTF-8
|
||
|
|
Content-Transfer-Encoding: 8bit
|
||
|
|
|
||
|
|
RH-Author: Leonardo Brás <leobras@redhat.com>
|
||
|
|
RH-MergeRequest: 191: MSG_ZEROCOPY + Multifd @ rhel8.7
|
||
|
|
RH-Commit: [8/26] 010579fa73b5a4c6fd631dc9fbaf6f974974bc99
|
||
|
|
RH-Bugzilla: 2072049
|
||
|
|
RH-Acked-by: Peter Xu <peterx@redhat.com>
|
||
|
|
RH-Acked-by: Daniel P. Berrangé <berrange@redhat.com>
|
||
|
|
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
|
||
|
|
|
||
|
|
Signed-off-by: Juan Quintela <quintela@redhat.com>
|
||
|
|
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
|
||
|
|
(cherry picked from commit f5ff548774c22b34a0c0e2fef85f1be11160d774)
|
||
|
|
Signed-off-by: Leonardo Bras <leobras@redhat.com>
|
||
|
|
---
|
||
|
|
migration/multifd-zstd.c | 20 ++++++++++----------
|
||
|
|
1 file changed, 10 insertions(+), 10 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/migration/multifd-zstd.c b/migration/multifd-zstd.c
|
||
|
|
index f0d1105792..d9ed42622b 100644
|
||
|
|
--- a/migration/multifd-zstd.c
|
||
|
|
+++ b/migration/multifd-zstd.c
|
||
|
|
@@ -13,6 +13,7 @@
|
||
|
|
#include "qemu/osdep.h"
|
||
|
|
#include <zstd.h>
|
||
|
|
#include "qemu/rcu.h"
|
||
|
|
+#include "exec/ramblock.h"
|
||
|
|
#include "exec/target_page.h"
|
||
|
|
#include "qapi/error.h"
|
||
|
|
#include "migration.h"
|
||
|
|
@@ -113,8 +114,8 @@ static void zstd_send_cleanup(MultiFDSendParams *p, Error **errp)
|
||
|
|
*/
|
||
|
|
static int zstd_send_prepare(MultiFDSendParams *p, Error **errp)
|
||
|
|
{
|
||
|
|
- struct iovec *iov = p->pages->iov;
|
||
|
|
struct zstd_data *z = p->data;
|
||
|
|
+ size_t page_size = qemu_target_page_size();
|
||
|
|
int ret;
|
||
|
|
uint32_t i;
|
||
|
|
|
||
|
|
@@ -128,8 +129,8 @@ static int zstd_send_prepare(MultiFDSendParams *p, Error **errp)
|
||
|
|
if (i == p->pages->num - 1) {
|
||
|
|
flush = ZSTD_e_flush;
|
||
|
|
}
|
||
|
|
- z->in.src = iov[i].iov_base;
|
||
|
|
- z->in.size = iov[i].iov_len;
|
||
|
|
+ z->in.src = p->pages->block->host + p->pages->offset[i];
|
||
|
|
+ z->in.size = page_size;
|
||
|
|
z->in.pos = 0;
|
||
|
|
|
||
|
|
/*
|
||
|
|
@@ -261,7 +262,8 @@ static int zstd_recv_pages(MultiFDRecvParams *p, Error **errp)
|
||
|
|
{
|
||
|
|
uint32_t in_size = p->next_packet_size;
|
||
|
|
uint32_t out_size = 0;
|
||
|
|
- uint32_t expected_size = p->pages->num * qemu_target_page_size();
|
||
|
|
+ size_t page_size = qemu_target_page_size();
|
||
|
|
+ uint32_t expected_size = p->pages->num * page_size;
|
||
|
|
uint32_t flags = p->flags & MULTIFD_FLAG_COMPRESSION_MASK;
|
||
|
|
struct zstd_data *z = p->data;
|
||
|
|
int ret;
|
||
|
|
@@ -283,10 +285,8 @@ static int zstd_recv_pages(MultiFDRecvParams *p, Error **errp)
|
||
|
|
z->in.pos = 0;
|
||
|
|
|
||
|
|
for (i = 0; i < p->pages->num; i++) {
|
||
|
|
- struct iovec *iov = &p->pages->iov[i];
|
||
|
|
-
|
||
|
|
- z->out.dst = iov->iov_base;
|
||
|
|
- z->out.size = iov->iov_len;
|
||
|
|
+ z->out.dst = p->pages->block->host + p->pages->offset[i];
|
||
|
|
+ z->out.size = page_size;
|
||
|
|
z->out.pos = 0;
|
||
|
|
|
||
|
|
/*
|
||
|
|
@@ -300,8 +300,8 @@ static int zstd_recv_pages(MultiFDRecvParams *p, Error **errp)
|
||
|
|
do {
|
||
|
|
ret = ZSTD_decompressStream(z->zds, &z->out, &z->in);
|
||
|
|
} while (ret > 0 && (z->in.size - z->in.pos > 0)
|
||
|
|
- && (z->out.pos < iov->iov_len));
|
||
|
|
- if (ret > 0 && (z->out.pos < iov->iov_len)) {
|
||
|
|
+ && (z->out.pos < page_size));
|
||
|
|
+ if (ret > 0 && (z->out.pos < page_size)) {
|
||
|
|
error_setg(errp, "multifd %d: decompressStream buffer too small",
|
||
|
|
p->id);
|
||
|
|
return -1;
|
||
|
|
--
|
||
|
|
2.35.3
|
||
|
|
|