* [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring
@ 2021-01-05 12:57 Maxime Coquelin
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 1/3] vhost: refactor postcopy region registration Maxime Coquelin
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: Maxime Coquelin @ 2021-01-05 12:57 UTC (permalink / raw)
To: dev, chenbo.xia, xuan.ding; +Cc: Maxime Coquelin
The goal of this series is to refactor vhost_user_set_mem_table
function, to make it easier to understand and maintain.
Changes in v2:
==============
- Tag unused args when userfaultfd disabled (Chenbo).
Maxime Coquelin (3):
vhost: refactor postcopy region registration
vhost: refactor postcopy registration
vhost: refactor memory regions mapping
lib/librte_vhost/vhost_user.c | 347 +++++++++++++++++++---------------
1 file changed, 195 insertions(+), 152 deletions(-)
--
2.29.2
^ permalink raw reply [flat|nested] 6+ messages in thread
* [dpdk-dev] [PATCH v2 1/3] vhost: refactor postcopy region registration
2021-01-05 12:57 [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring Maxime Coquelin
@ 2021-01-05 12:57 ` Maxime Coquelin
2021-01-08 2:57 ` Xia, Chenbo
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 2/3] vhost: refactor postcopy registration Maxime Coquelin
` (2 subsequent siblings)
3 siblings, 1 reply; 6+ messages in thread
From: Maxime Coquelin @ 2021-01-05 12:57 UTC (permalink / raw)
To: dev, chenbo.xia, xuan.ding; +Cc: Maxime Coquelin
This patch moves the registration of memory regions to
userfaultfd to a dedicated function, with the goal of
simplifying VHOST_USER_SET_MEM_TABLE request handling
function.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
lib/librte_vhost/vhost_user.c | 77 +++++++++++++++++++++--------------
1 file changed, 46 insertions(+), 31 deletions(-)
diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 45c8ac09da..b6c8e2e17f 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -998,6 +998,49 @@ vhost_memory_changed(struct VhostUserMemory *new,
return false;
}
+#ifdef RTE_LIBRTE_VHOST_POSTCOPY
+static int
+vhost_user_postcopy_region_register(struct virtio_net *dev,
+ struct rte_vhost_mem_region *reg)
+{
+ struct uffdio_register reg_struct;
+
+ /*
+ * Let's register all the mmap'ed area to ensure
+ * alignment on page boundary.
+ */
+ reg_struct.range.start = (uint64_t)(uintptr_t)reg->mmap_addr;
+ reg_struct.range.len = reg->mmap_size;
+ reg_struct.mode = UFFDIO_REGISTER_MODE_MISSING;
+
+ if (ioctl(dev->postcopy_ufd, UFFDIO_REGISTER,
+ ®_struct)) {
+ VHOST_LOG_CONFIG(ERR, "Failed to register ufd for region "
+ "%" PRIx64 " - %" PRIx64 " (ufd = %d) %s\n",
+ (uint64_t)reg_struct.range.start,
+ (uint64_t)reg_struct.range.start +
+ (uint64_t)reg_struct.range.len - 1,
+ dev->postcopy_ufd,
+ strerror(errno));
+ return -1;
+ }
+
+ VHOST_LOG_CONFIG(INFO, "\t userfaultfd registered for range : %" PRIx64 " - %" PRIx64 "\n",
+ (uint64_t)reg_struct.range.start,
+ (uint64_t)reg_struct.range.start +
+ (uint64_t)reg_struct.range.len - 1);
+
+ return 0;
+}
+#else
+static int
+vhost_user_postcopy_region_register(struct virtio_net *dev __rte_unused,
+ struct rte_vhost_mem_region *reg __rte_unused)
+{
+ return -1;
+}
+#endif
+
static int
vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
int main_fd)
@@ -1209,38 +1252,10 @@ vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
}
/* Now userfault register and we can use the memory */
- for (i = 0; i < memory->nregions; i++) {
-#ifdef RTE_LIBRTE_VHOST_POSTCOPY
- reg = &dev->mem->regions[i];
- struct uffdio_register reg_struct;
-
- /*
- * Let's register all the mmap'ed area to ensure
- * alignment on page boundary.
- */
- reg_struct.range.start =
- (uint64_t)(uintptr_t)reg->mmap_addr;
- reg_struct.range.len = reg->mmap_size;
- reg_struct.mode = UFFDIO_REGISTER_MODE_MISSING;
-
- if (ioctl(dev->postcopy_ufd, UFFDIO_REGISTER,
- ®_struct)) {
- VHOST_LOG_CONFIG(ERR,
- "Failed to register ufd for region %d: (ufd = %d) %s\n",
- i, dev->postcopy_ufd,
- strerror(errno));
+ for (i = 0; i < memory->nregions; i++)
+ if (vhost_user_postcopy_region_register(dev,
+ &dev->mem->regions[i]) < 0)
goto free_mem_table;
- }
- VHOST_LOG_CONFIG(INFO,
- "\t userfaultfd registered for range : "
- "%" PRIx64 " - %" PRIx64 "\n",
- (uint64_t)reg_struct.range.start,
- (uint64_t)reg_struct.range.start +
- (uint64_t)reg_struct.range.len - 1);
-#else
- goto free_mem_table;
-#endif
- }
}
for (i = 0; i < dev->nr_vring; i++) {
--
2.29.2
^ permalink raw reply [flat|nested] 6+ messages in thread
* [dpdk-dev] [PATCH v2 2/3] vhost: refactor postcopy registration
2021-01-05 12:57 [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring Maxime Coquelin
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 1/3] vhost: refactor postcopy region registration Maxime Coquelin
@ 2021-01-05 12:57 ` Maxime Coquelin
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 3/3] vhost: refactor memory regions mapping Maxime Coquelin
2021-01-08 9:16 ` [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring Maxime Coquelin
3 siblings, 0 replies; 6+ messages in thread
From: Maxime Coquelin @ 2021-01-05 12:57 UTC (permalink / raw)
To: dev, chenbo.xia, xuan.ding; +Cc: Maxime Coquelin
This patch moves the registration of postcopy to a
dedicated function, with the goal of simplifying
VHOST_USER_SET_MEM_TABLE request handling function.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
---
lib/librte_vhost/vhost_user.c | 98 +++++++++++++++++++++--------------
1 file changed, 58 insertions(+), 40 deletions(-)
diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index b6c8e2e17f..382b9732b8 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -1041,6 +1041,62 @@ vhost_user_postcopy_region_register(struct virtio_net *dev __rte_unused,
}
#endif
+static int
+vhost_user_postcopy_register(struct virtio_net *dev, int main_fd,
+ struct VhostUserMsg *msg)
+{
+ struct VhostUserMemory *memory;
+ struct rte_vhost_mem_region *reg;
+ VhostUserMsg ack_msg;
+ uint32_t i;
+
+ if (!dev->postcopy_listening)
+ return 0;
+
+ /*
+ * We haven't a better way right now than sharing
+ * DPDK's virtual address with Qemu, so that Qemu can
+ * retrieve the region offset when handling userfaults.
+ */
+ memory = &msg->payload.memory;
+ for (i = 0; i < memory->nregions; i++) {
+ reg = &dev->mem->regions[i];
+ memory->regions[i].userspace_addr = reg->host_user_addr;
+ }
+
+ /* Send the addresses back to qemu */
+ msg->fd_num = 0;
+ send_vhost_reply(main_fd, msg);
+
+ /* Wait for qemu to acknolwedge it's got the addresses
+ * we've got to wait before we're allowed to generate faults.
+ */
+ if (read_vhost_message(main_fd, &ack_msg) <= 0) {
+ VHOST_LOG_CONFIG(ERR,
+ "Failed to read qemu ack on postcopy set-mem-table\n");
+ return -1;
+ }
+
+ if (validate_msg_fds(&ack_msg, 0) != 0)
+ return -1;
+
+ if (ack_msg.request.master != VHOST_USER_SET_MEM_TABLE) {
+ VHOST_LOG_CONFIG(ERR,
+ "Bad qemu ack on postcopy set-mem-table (%d)\n",
+ ack_msg.request.master);
+ return -1;
+ }
+
+ /* Now userfault register and we can use the memory */
+ for (i = 0; i < memory->nregions; i++) {
+ reg = &dev->mem->regions[i];
+ if (vhost_user_postcopy_region_register(dev, reg) < 0)
+ return -1;
+ }
+
+ return 0;
+}
+
static int
vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
int main_fd)
@@ -1215,48 +1271,10 @@ vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
mmap_size,
alignment,
mmap_offset);
-
- if (dev->postcopy_listening) {
- /*
- * We haven't a better way right now than sharing
- * DPDK's virtual address with Qemu, so that Qemu can
- * retrieve the region offset when handling userfaults.
- */
- memory->regions[i].userspace_addr =
- reg->host_user_addr;
- }
}
- if (dev->postcopy_listening) {
- /* Send the addresses back to qemu */
- msg->fd_num = 0;
- send_vhost_reply(main_fd, msg);
-
- /* Wait for qemu to acknolwedge it's got the addresses
- * we've got to wait before we're allowed to generate faults.
- */
- VhostUserMsg ack_msg;
- if (read_vhost_message(main_fd, &ack_msg) <= 0) {
- VHOST_LOG_CONFIG(ERR,
- "Failed to read qemu ack on postcopy set-mem-table\n");
- goto free_mem_table;
- }
-
- if (validate_msg_fds(&ack_msg, 0) != 0)
- goto free_mem_table;
-
- if (ack_msg.request.master != VHOST_USER_SET_MEM_TABLE) {
- VHOST_LOG_CONFIG(ERR,
- "Bad qemu ack on postcopy set-mem-table (%d)\n",
- ack_msg.request.master);
- goto free_mem_table;
- }
- /* Now userfault register and we can use the memory */
- for (i = 0; i < memory->nregions; i++)
- if (vhost_user_postcopy_region_register(dev,
- &dev->mem->regions[i]) < 0)
- goto free_mem_table;
- }
+ if (vhost_user_postcopy_register(dev, main_fd, msg) < 0)
+ goto free_mem_table;
for (i = 0; i < dev->nr_vring; i++) {
struct vhost_virtqueue *vq = dev->virtqueue[i];
--
2.29.2
^ permalink raw reply [flat|nested] 6+ messages in thread
* [dpdk-dev] [PATCH v2 3/3] vhost: refactor memory regions mapping
2021-01-05 12:57 [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring Maxime Coquelin
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 1/3] vhost: refactor postcopy region registration Maxime Coquelin
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 2/3] vhost: refactor postcopy registration Maxime Coquelin
@ 2021-01-05 12:57 ` Maxime Coquelin
2021-01-08 9:16 ` [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring Maxime Coquelin
3 siblings, 0 replies; 6+ messages in thread
From: Maxime Coquelin @ 2021-01-05 12:57 UTC (permalink / raw)
To: dev, chenbo.xia, xuan.ding; +Cc: Maxime Coquelin
This patch moves memory region mmaping and related
preparation in a dedicated function in order to simplify
VHOST_USER_SET_MEM_TABLE request handling function.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
---
lib/librte_vhost/vhost_user.c | 178 ++++++++++++++++++----------------
1 file changed, 94 insertions(+), 84 deletions(-)
diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 382b9732b8..bfb444f211 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -1097,6 +1097,96 @@ vhost_user_postcopy_register(struct virtio_net *dev, int main_fd,
return 0;
}
+static int
+vhost_user_mmap_region(struct virtio_net *dev,
+ struct rte_vhost_mem_region *region,
+ uint64_t mmap_offset)
+{
+ void *mmap_addr;
+ uint64_t mmap_size;
+ uint64_t alignment;
+ int populate;
+
+ /* Check for memory_size + mmap_offset overflow */
+ if (mmap_offset >= -region->size) {
+ VHOST_LOG_CONFIG(ERR,
+ "mmap_offset (%#"PRIx64") and memory_size "
+ "(%#"PRIx64") overflow\n",
+ mmap_offset, region->size);
+ return -1;
+ }
+
+ mmap_size = region->size + mmap_offset;
+
+ /* mmap() without flag of MAP_ANONYMOUS, should be called with length
+ * argument aligned with hugepagesz at older longterm version Linux,
+ * like 2.6.32 and 3.2.72, or mmap() will fail with EINVAL.
+ *
+ * To avoid failure, make sure in caller to keep length aligned.
+ */
+ alignment = get_blk_size(region->fd);
+ if (alignment == (uint64_t)-1) {
+ VHOST_LOG_CONFIG(ERR,
+ "couldn't get hugepage size through fstat\n");
+ return -1;
+ }
+ mmap_size = RTE_ALIGN_CEIL(mmap_size, alignment);
+ if (mmap_size == 0) {
+ /*
+ * It could happen if initial mmap_size + alignment overflows
+ * the sizeof uint64, which could happen if either mmap_size or
+ * alignment value is wrong.
+ *
+ * mmap() kernel implementation would return an error, but
+ * better catch it before and provide useful info in the logs.
+ */
+ VHOST_LOG_CONFIG(ERR, "mmap size (0x%" PRIx64 ") "
+ "or alignment (0x%" PRIx64 ") is invalid\n",
+ region->size + mmap_offset, alignment);
+ return -1;
+ }
+
+ populate = dev->async_copy ? MAP_POPULATE : 0;
+ mmap_addr = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
+ MAP_SHARED | populate, region->fd, 0);
+
+ if (mmap_addr == MAP_FAILED) {
+ VHOST_LOG_CONFIG(ERR, "mmap failed (%s).\n", strerror(errno));
+ return -1;
+ }
+
+ region->mmap_addr = mmap_addr;
+ region->mmap_size = mmap_size;
+ region->host_user_addr = (uint64_t)(uintptr_t)mmap_addr + mmap_offset;
+
+ if (dev->async_copy)
+ if (add_guest_pages(dev, region, alignment) < 0) {
+ VHOST_LOG_CONFIG(ERR,
+ "adding guest pages to region failed.\n");
+ return -1;
+ }
+
+ VHOST_LOG_CONFIG(INFO,
+ "guest memory region size: 0x%" PRIx64 "\n"
+ "\t guest physical addr: 0x%" PRIx64 "\n"
+ "\t guest virtual addr: 0x%" PRIx64 "\n"
+ "\t host virtual addr: 0x%" PRIx64 "\n"
+ "\t mmap addr : 0x%" PRIx64 "\n"
+ "\t mmap size : 0x%" PRIx64 "\n"
+ "\t mmap align: 0x%" PRIx64 "\n"
+ "\t mmap off : 0x%" PRIx64 "\n",
+ region->size,
+ region->guest_phys_addr,
+ region->guest_user_addr,
+ region->host_user_addr,
+ (uint64_t)(uintptr_t)mmap_addr,
+ mmap_size,
+ alignment,
+ mmap_offset);
+
+ return 0;
+}
+
static int
vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
int main_fd)
@@ -1104,12 +1194,9 @@ vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
struct virtio_net *dev = *pdev;
struct VhostUserMemory *memory = &msg->payload.memory;
struct rte_vhost_mem_region *reg;
- void *mmap_addr;
- uint64_t mmap_size;
+
uint64_t mmap_offset;
- uint64_t alignment;
uint32_t i;
- int populate;
if (validate_msg_fds(msg, memory->nregions) != 0)
return RTE_VHOST_MSG_RESULT_ERR;
@@ -1171,7 +1258,6 @@ vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
dev->vid);
goto free_guest_pages;
}
- dev->mem->nregions = memory->nregions;
for (i = 0; i < memory->nregions; i++) {
reg = &dev->mem->regions[i];
@@ -1189,88 +1275,12 @@ vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
mmap_offset = memory->regions[i].mmap_offset;
- /* Check for memory_size + mmap_offset overflow */
- if (mmap_offset >= -reg->size) {
- VHOST_LOG_CONFIG(ERR,
- "mmap_offset (%#"PRIx64") and memory_size "
- "(%#"PRIx64") overflow\n",
- mmap_offset, reg->size);
- goto free_mem_table;
- }
-
- mmap_size = reg->size + mmap_offset;
-
- /* mmap() without flag of MAP_ANONYMOUS, should be called
- * with length argument aligned with hugepagesz at older
- * longterm version Linux, like 2.6.32 and 3.2.72, or
- * mmap() will fail with EINVAL.
- *
- * to avoid failure, make sure in caller to keep length
- * aligned.
- */
- alignment = get_blk_size(reg->fd);
- if (alignment == (uint64_t)-1) {
- VHOST_LOG_CONFIG(ERR,
- "couldn't get hugepage size through fstat\n");
- goto free_mem_table;
- }
- mmap_size = RTE_ALIGN_CEIL(mmap_size, alignment);
- if (mmap_size == 0) {
- /*
- * It could happen if initial mmap_size + alignment
- * overflows the sizeof uint64, which could happen if
- * either mmap_size or alignment value is wrong.
- *
- * mmap() kernel implementation would return an error,
- * but better catch it before and provide useful info
- * in the logs.
- */
- VHOST_LOG_CONFIG(ERR, "mmap size (0x%" PRIx64 ") "
- "or alignment (0x%" PRIx64 ") is invalid\n",
- reg->size + mmap_offset, alignment);
- goto free_mem_table;
- }
-
- populate = dev->async_copy ? MAP_POPULATE : 0;
- mmap_addr = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
- MAP_SHARED | populate, reg->fd, 0);
-
- if (mmap_addr == MAP_FAILED) {
- VHOST_LOG_CONFIG(ERR,
- "mmap region %u failed.\n", i);
+ if (vhost_user_mmap_region(dev, reg, mmap_offset) < 0) {
+ VHOST_LOG_CONFIG(ERR, "Failed to mmap region %u\n", i);
goto free_mem_table;
}
- reg->mmap_addr = mmap_addr;
- reg->mmap_size = mmap_size;
- reg->host_user_addr = (uint64_t)(uintptr_t)mmap_addr +
- mmap_offset;
-
- if (dev->async_copy)
- if (add_guest_pages(dev, reg, alignment) < 0) {
- VHOST_LOG_CONFIG(ERR,
- "adding guest pages to region %u failed.\n",
- i);
- goto free_mem_table;
- }
-
- VHOST_LOG_CONFIG(INFO,
- "guest memory region %u, size: 0x%" PRIx64 "\n"
- "\t guest physical addr: 0x%" PRIx64 "\n"
- "\t guest virtual addr: 0x%" PRIx64 "\n"
- "\t host virtual addr: 0x%" PRIx64 "\n"
- "\t mmap addr : 0x%" PRIx64 "\n"
- "\t mmap size : 0x%" PRIx64 "\n"
- "\t mmap align: 0x%" PRIx64 "\n"
- "\t mmap off : 0x%" PRIx64 "\n",
- i, reg->size,
- reg->guest_phys_addr,
- reg->guest_user_addr,
- reg->host_user_addr,
- (uint64_t)(uintptr_t)mmap_addr,
- mmap_size,
- alignment,
- mmap_offset);
+ dev->mem->nregions++;
}
if (vhost_user_postcopy_register(dev, main_fd, msg) < 0)
--
2.29.2
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] [PATCH v2 1/3] vhost: refactor postcopy region registration
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 1/3] vhost: refactor postcopy region registration Maxime Coquelin
@ 2021-01-08 2:57 ` Xia, Chenbo
0 siblings, 0 replies; 6+ messages in thread
From: Xia, Chenbo @ 2021-01-08 2:57 UTC (permalink / raw)
To: Maxime Coquelin, dev, Ding, Xuan
> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Tuesday, January 5, 2021 8:57 PM
> To: dev@dpdk.org; Xia, Chenbo <chenbo.xia@intel.com>; Ding, Xuan
> <xuan.ding@intel.com>
> Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
> Subject: [PATCH v2 1/3] vhost: refactor postcopy region registration
>
> This patch moves the registration of memory regions to
> userfaultfd to a dedicated function, with the goal of
> simplifying VHOST_USER_SET_MEM_TABLE request handling
> function.
>
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
> lib/librte_vhost/vhost_user.c | 77 +++++++++++++++++++++--------------
> 1 file changed, 46 insertions(+), 31 deletions(-)
>
> diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
> index 45c8ac09da..b6c8e2e17f 100644
> --- a/lib/librte_vhost/vhost_user.c
> +++ b/lib/librte_vhost/vhost_user.c
> @@ -998,6 +998,49 @@ vhost_memory_changed(struct VhostUserMemory *new,
> return false;
> }
>
> +#ifdef RTE_LIBRTE_VHOST_POSTCOPY
> +static int
> +vhost_user_postcopy_region_register(struct virtio_net *dev,
> + struct rte_vhost_mem_region *reg)
> +{
> + struct uffdio_register reg_struct;
> +
> + /*
> + * Let's register all the mmap'ed area to ensure
> + * alignment on page boundary.
> + */
> + reg_struct.range.start = (uint64_t)(uintptr_t)reg->mmap_addr;
> + reg_struct.range.len = reg->mmap_size;
> + reg_struct.mode = UFFDIO_REGISTER_MODE_MISSING;
> +
> + if (ioctl(dev->postcopy_ufd, UFFDIO_REGISTER,
> + ®_struct)) {
> + VHOST_LOG_CONFIG(ERR, "Failed to register ufd for region "
> + "%" PRIx64 " - %" PRIx64 " (ufd = %d) %s\n",
> + (uint64_t)reg_struct.range.start,
> + (uint64_t)reg_struct.range.start +
> + (uint64_t)reg_struct.range.len - 1,
> + dev->postcopy_ufd,
> + strerror(errno));
> + return -1;
> + }
> +
> + VHOST_LOG_CONFIG(INFO, "\t userfaultfd registered for range : %" PRIx64
> " - %" PRIx64 "\n",
> + (uint64_t)reg_struct.range.start,
> + (uint64_t)reg_struct.range.start +
> + (uint64_t)reg_struct.range.len - 1);
> +
> + return 0;
> +}
> +#else
> +static int
> +vhost_user_postcopy_region_register(struct virtio_net *dev __rte_unused,
> + struct rte_vhost_mem_region *reg __rte_unused)
> +{
> + return -1;
> +}
> +#endif
> +
> static int
> vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
> int main_fd)
> @@ -1209,38 +1252,10 @@ vhost_user_set_mem_table(struct virtio_net **pdev,
> struct VhostUserMsg *msg,
> }
>
> /* Now userfault register and we can use the memory */
> - for (i = 0; i < memory->nregions; i++) {
> -#ifdef RTE_LIBRTE_VHOST_POSTCOPY
> - reg = &dev->mem->regions[i];
> - struct uffdio_register reg_struct;
> -
> - /*
> - * Let's register all the mmap'ed area to ensure
> - * alignment on page boundary.
> - */
> - reg_struct.range.start =
> - (uint64_t)(uintptr_t)reg->mmap_addr;
> - reg_struct.range.len = reg->mmap_size;
> - reg_struct.mode = UFFDIO_REGISTER_MODE_MISSING;
> -
> - if (ioctl(dev->postcopy_ufd, UFFDIO_REGISTER,
> - ®_struct)) {
> - VHOST_LOG_CONFIG(ERR,
> - "Failed to register ufd for region %d: (ufd
> = %d) %s\n",
> - i, dev->postcopy_ufd,
> - strerror(errno));
> + for (i = 0; i < memory->nregions; i++)
> + if (vhost_user_postcopy_region_register(dev,
> + &dev->mem->regions[i]) < 0)
> goto free_mem_table;
> - }
> - VHOST_LOG_CONFIG(INFO,
> - "\t userfaultfd registered for range : "
> - "%" PRIx64 " - %" PRIx64 "\n",
> - (uint64_t)reg_struct.range.start,
> - (uint64_t)reg_struct.range.start +
> - (uint64_t)reg_struct.range.len - 1);
> -#else
> - goto free_mem_table;
> -#endif
> - }
> }
>
> for (i = 0; i < dev->nr_vring; i++) {
> --
> 2.29.2
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring
2021-01-05 12:57 [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring Maxime Coquelin
` (2 preceding siblings ...)
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 3/3] vhost: refactor memory regions mapping Maxime Coquelin
@ 2021-01-08 9:16 ` Maxime Coquelin
3 siblings, 0 replies; 6+ messages in thread
From: Maxime Coquelin @ 2021-01-08 9:16 UTC (permalink / raw)
To: dev, chenbo.xia, xuan.ding
On 1/5/21 1:57 PM, Maxime Coquelin wrote:
> The goal of this series is to refactor vhost_user_set_mem_table
> function, to make it easier to understand and maintain.
>
> Changes in v2:
> ==============
> - Tag unused args when userfaultfd disabled (Chenbo).
>
> Maxime Coquelin (3):
> vhost: refactor postcopy region registration
> vhost: refactor postcopy registration
> vhost: refactor memory regions mapping
>
> lib/librte_vhost/vhost_user.c | 347 +++++++++++++++++++---------------
> 1 file changed, 195 insertions(+), 152 deletions(-)
>
Series applied to dpdk-next-virtio/main.
Thanks,
Maxime
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-01-08 9:16 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-05 12:57 [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring Maxime Coquelin
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 1/3] vhost: refactor postcopy region registration Maxime Coquelin
2021-01-08 2:57 ` Xia, Chenbo
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 2/3] vhost: refactor postcopy registration Maxime Coquelin
2021-01-05 12:57 ` [dpdk-dev] [PATCH v2 3/3] vhost: refactor memory regions mapping Maxime Coquelin
2021-01-08 9:16 ` [dpdk-dev] [PATCH v2 0/3] vhost: vhost_user_set_mem_table refactoring Maxime Coquelin
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