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[PATCH v3 09/23] multifd: Make zstd compression method not use iovs
From: |
Juan Quintela |
Subject: |
[PATCH v3 09/23] multifd: Make zstd compression method not use iovs |
Date: |
Wed, 24 Nov 2021 11:06:03 +0100 |
Signed-off-by: Juan Quintela <quintela@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 a8b104f4ee..2d5b61106c 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"
@@ -111,8 +112,8 @@ 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;
@@ -126,8 +127,8 @@ 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;
/*
@@ -256,7 +257,8 @@ 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;
@@ -278,10 +280,8 @@ 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;
/*
@@ -295,8 +295,8 @@ 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;
--
2.33.1
- Re: [PATCH v3 05/23] multifd: The variable is only used inside the loop, (continued)
- [PATCH v3 08/23] multifd: Fill offset and block for reception, Juan Quintela, 2021/11/24
- [PATCH v3 10/23] multifd: Make zlib compression method not use iovs, Juan Quintela, 2021/11/24
- [PATCH v3 07/23] multifd: remove used parameter from send_recv_pages() method, Juan Quintela, 2021/11/24
- [PATCH v3 04/23] multifd: Add missing documention, Juan Quintela, 2021/11/24
- [PATCH v3 09/23] multifd: Make zstd compression method not use iovs,
Juan Quintela <=
- [PATCH v3 11/23] multifd: Move iov from pages to params, Juan Quintela, 2021/11/24
- [PATCH v3 12/23] multifd: Make zlib use iov's, Juan Quintela, 2021/11/24
- [PATCH v3 06/23] multifd: remove used parameter from send_prepare() method, Juan Quintela, 2021/11/24
- [PATCH v3 13/23] multifd: Make zstd use iov's, Juan Quintela, 2021/11/24