[dpdk-dev] [PATCH] eal: fix memory mapping for 32-bit targets

[dpdk-dev] [PATCH] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 2751 bytes --]

For 32-bit targets, size_t is normally a 32-bit type and
does not have sufficient range to represent 64-bit offsets
that can are needed when mapping PCI addresses. Use off_t
instead, which is usually a 64-bit type when compiled with
_D_FILE_OFFSET_BITS=64 as is the case for DPDK.

Found when attempting to run 32-bit Linux dpdk-testpmd
using VFIO driver:

    EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
    0x200000, 0x20000000000): Invalid argument ((nil))

Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
Cc: stable@dpdk.org
Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
---
 lib/eal/include/rte_eal_paging.h |  2 +-
 lib/eal/unix/eal_unix_memory.c   | 10 +++++-----
 lib/eal/windows/eal_memory.c     |  2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/eal/include/rte_eal_paging.h b/lib/eal/include/rte_eal_paging.h
index ed98e70e9e..2c05025ffc 100644
--- a/lib/eal/include/rte_eal_paging.h
+++ b/lib/eal/include/rte_eal_paging.h
@@ -61,7 +61,7 @@ enum rte_map_flags {
 __rte_internal
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset);
+	int fd, off_t offset);
 
 /**
  * OS-independent implementation of POSIX munmap(3).
diff --git a/lib/eal/unix/eal_unix_memory.c b/lib/eal/unix/eal_unix_memory.c
index ec7156df96..51a42e1a43 100644
--- a/lib/eal/unix/eal_unix_memory.c
+++ b/lib/eal/unix/eal_unix_memory.c
@@ -24,14 +24,14 @@
 
 static void *
 mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, off_t offset)
 {
 	void *virt = mmap(requested_addr, size, prot, flags, fd, offset);
 	if (virt == MAP_FAILED) {
 		RTE_LOG(DEBUG, EAL,
-			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%zx): %s\n",
-			requested_addr, size, prot, flags, fd, offset,
-			strerror(errno));
+			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%llx): %s\n",
+			requested_addr, size, prot, flags, fd,
+			(unsigned long long)offset, strerror(errno));
 		rte_errno = errno;
 		return NULL;
 	}
@@ -106,7 +106,7 @@ mem_rte_to_sys_prot(int prot)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, off_t offset)
 {
 	int sys_flags = 0;
 	int sys_prot;
diff --git a/lib/eal/windows/eal_memory.c b/lib/eal/windows/eal_memory.c
index 2cf5a5e649..f1c4b03e96 100644
--- a/lib/eal/windows/eal_memory.c
+++ b/lib/eal/windows/eal_memory.c
@@ -508,7 +508,7 @@ eal_mem_set_dump(void *virt, size_t size, bool dump)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, off_t offset)
 {
 	HANDLE file_handle = INVALID_HANDLE_VALUE;
 	HANDLE mapping_handle = INVALID_HANDLE_VALUE;
-- 
2.25.1

Re: [dpdk-dev] [PATCH] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 3393 bytes --]

On Fri, May 7, 2021 at 2:10 PM Lance Richardson
<lance.richardson@broadcom.com> wrote:
>
> For 32-bit targets, size_t is normally a 32-bit type and
> does not have sufficient range to represent 64-bit offsets
> that can are needed when mapping PCI addresses. Use off_t
> instead, which is usually a 64-bit type when compiled with
> _D_FILE_OFFSET_BITS=64 as is the case for DPDK.
>
> Found when attempting to run 32-bit Linux dpdk-testpmd
> using VFIO driver:
>
>     EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
>     0x200000, 0x20000000000): Invalid argument ((nil))
>
> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
> Cc: stable@dpdk.org
> Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> ---
>  lib/eal/include/rte_eal_paging.h |  2 +-
>  lib/eal/unix/eal_unix_memory.c   | 10 +++++-----
>  lib/eal/windows/eal_memory.c     |  2 +-
>  3 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/lib/eal/include/rte_eal_paging.h b/lib/eal/include/rte_eal_paging.h
> index ed98e70e9e..2c05025ffc 100644
> --- a/lib/eal/include/rte_eal_paging.h
> +++ b/lib/eal/include/rte_eal_paging.h
> @@ -61,7 +61,7 @@ enum rte_map_flags {
>  __rte_internal
>  void *
>  rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
> -       int fd, size_t offset);
> +       int fd, off_t offset);
>
>  /**
>   * OS-independent implementation of POSIX munmap(3).
> diff --git a/lib/eal/unix/eal_unix_memory.c b/lib/eal/unix/eal_unix_memory.c
> index ec7156df96..51a42e1a43 100644
> --- a/lib/eal/unix/eal_unix_memory.c
> +++ b/lib/eal/unix/eal_unix_memory.c
> @@ -24,14 +24,14 @@
>
>  static void *
>  mem_map(void *requested_addr, size_t size, int prot, int flags,
> -       int fd, size_t offset)
> +       int fd, off_t offset)
>  {
>         void *virt = mmap(requested_addr, size, prot, flags, fd, offset);
>         if (virt == MAP_FAILED) {
>                 RTE_LOG(DEBUG, EAL,
> -                       "Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%zx): %s\n",
> -                       requested_addr, size, prot, flags, fd, offset,
> -                       strerror(errno));
> +                       "Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%llx): %s\n",
> +                       requested_addr, size, prot, flags, fd,
> +                       (unsigned long long)offset, strerror(errno));
>                 rte_errno = errno;
>                 return NULL;
>         }
> @@ -106,7 +106,7 @@ mem_rte_to_sys_prot(int prot)
>
>  void *
>  rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
> -       int fd, size_t offset)
> +       int fd, off_t offset)
>  {
>         int sys_flags = 0;
>         int sys_prot;
> diff --git a/lib/eal/windows/eal_memory.c b/lib/eal/windows/eal_memory.c
> index 2cf5a5e649..f1c4b03e96 100644
> --- a/lib/eal/windows/eal_memory.c
> +++ b/lib/eal/windows/eal_memory.c
> @@ -508,7 +508,7 @@ eal_mem_set_dump(void *virt, size_t size, bool dump)
>
>  void *
>  rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
> -       int fd, size_t offset)
> +       int fd, off_t offset)
>  {
>         HANDLE file_handle = INVALID_HANDLE_VALUE;
>         HANDLE mapping_handle = INVALID_HANDLE_VALUE;
> --
> 2.25.1
>

Windows compilation is failing in CI, apparently Windows doesn't
understand "off_t".

Should we add an "rte_off_t" definition for non-POSIX portability?

Re: [dpdk-dev] [PATCH] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 225 bytes --]

> Windows compilation is failing in CI, apparently Windows doesn't
> understand "off_t".
>
> Should we add an "rte_off_t" definition for non-POSIX portability?

On second thought, it's probably better to simply use uint64_t.

[dpdk-dev] [PATCH v2] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 2734 bytes --]

For 32-bit targets, size_t is normally a 32-bit type and
does not have sufficient range to represent 64-bit offsets
that can are needed when mapping PCI addresses. Use uint64_t
instead.

Found when attempting to run 32-bit Linux dpdk-testpmd
using VFIO driver:

    EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
    0x200000, 0x20000000000): Invalid argument ((nil))

Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
Cc: stable@dpdk.org
Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
---
v2: Use uint64_t instead of off_t (off_t is unknown to Windows).

 lib/eal/include/rte_eal_paging.h |  2 +-
 lib/eal/unix/eal_unix_memory.c   | 10 +++++-----
 lib/eal/windows/eal_memory.c     |  2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/eal/include/rte_eal_paging.h b/lib/eal/include/rte_eal_paging.h
index ed98e70e9e..c60317d0f5 100644
--- a/lib/eal/include/rte_eal_paging.h
+++ b/lib/eal/include/rte_eal_paging.h
@@ -61,7 +61,7 @@ enum rte_map_flags {
 __rte_internal
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset);
+	int fd, uint64_t offset);
 
 /**
  * OS-independent implementation of POSIX munmap(3).
diff --git a/lib/eal/unix/eal_unix_memory.c b/lib/eal/unix/eal_unix_memory.c
index ec7156df96..41a94a7511 100644
--- a/lib/eal/unix/eal_unix_memory.c
+++ b/lib/eal/unix/eal_unix_memory.c
@@ -24,14 +24,14 @@
 
 static void *
 mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, uint64_t offset)
 {
 	void *virt = mmap(requested_addr, size, prot, flags, fd, offset);
 	if (virt == MAP_FAILED) {
 		RTE_LOG(DEBUG, EAL,
-			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%zx): %s\n",
-			requested_addr, size, prot, flags, fd, offset,
-			strerror(errno));
+			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%llx): %s\n",
+			requested_addr, size, prot, flags, fd,
+			(unsigned long long)offset, strerror(errno));
 		rte_errno = errno;
 		return NULL;
 	}
@@ -106,7 +106,7 @@ mem_rte_to_sys_prot(int prot)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, uint64_t offset)
 {
 	int sys_flags = 0;
 	int sys_prot;
diff --git a/lib/eal/windows/eal_memory.c b/lib/eal/windows/eal_memory.c
index 2cf5a5e649..4db048ccb5 100644
--- a/lib/eal/windows/eal_memory.c
+++ b/lib/eal/windows/eal_memory.c
@@ -508,7 +508,7 @@ eal_mem_set_dump(void *virt, size_t size, bool dump)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, uint64_t offset)
 {
 	HANDLE file_handle = INVALID_HANDLE_VALUE;
 	HANDLE mapping_handle = INVALID_HANDLE_VALUE;
-- 
2.25.1

Re: [dpdk-dev] [PATCH v2] eal: fix memory mapping for 32-bit targets

[Dmitry Kozlyuk]

2021-05-07 15:06 (UTC-0400), Lance Richardson:
[...]
> diff --git a/lib/eal/unix/eal_unix_memory.c b/lib/eal/unix/eal_unix_memory.c
> index ec7156df96..41a94a7511 100644
> --- a/lib/eal/unix/eal_unix_memory.c
> +++ b/lib/eal/unix/eal_unix_memory.c
> @@ -24,14 +24,14 @@
>  
>  static void *
>  mem_map(void *requested_addr, size_t size, int prot, int flags,
> -	int fd, size_t offset)
> +	int fd, uint64_t offset)
>  {
>  	void *virt = mmap(requested_addr, size, prot, flags, fd, offset);
>  	if (virt == MAP_FAILED) {
>  		RTE_LOG(DEBUG, EAL,
> -			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%zx): %s\n",
> -			requested_addr, size, prot, flags, fd, offset,
> -			strerror(errno));
> +			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%llx): %s\n",
> +			requested_addr, size, prot, flags, fd,
> +			(unsigned long long)offset, strerror(errno));

Why not PRIx64?

Re: [dpdk-dev] [PATCH v2] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 1179 bytes --]

On Fri, May 7, 2021 at 4:51 PM Dmitry Kozlyuk <dmitry.kozliuk@gmail.com> wrote:
>
> 2021-05-07 15:06 (UTC-0400), Lance Richardson:
> [...]
> > diff --git a/lib/eal/unix/eal_unix_memory.c b/lib/eal/unix/eal_unix_memory.c
> > index ec7156df96..41a94a7511 100644
> > --- a/lib/eal/unix/eal_unix_memory.c
> > +++ b/lib/eal/unix/eal_unix_memory.c
> > @@ -24,14 +24,14 @@
> >
> >  static void *
> >  mem_map(void *requested_addr, size_t size, int prot, int flags,
> > -     int fd, size_t offset)
> > +     int fd, uint64_t offset)
> >  {
> >       void *virt = mmap(requested_addr, size, prot, flags, fd, offset);
> >       if (virt == MAP_FAILED) {
> >               RTE_LOG(DEBUG, EAL,
> > -                     "Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%zx): %s\n",
> > -                     requested_addr, size, prot, flags, fd, offset,
> > -                     strerror(errno));
> > +                     "Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%llx): %s\n",
> > +                     requested_addr, size, prot, flags, fd,
> > +                     (unsigned long long)offset, strerror(errno));
>
> Why not PRIx64?

Good point. %llx made sense for off_t.

Thanks,
    Lance

[dpdk-dev] [PATCH] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 2951 bytes --]

For 32-bit targets, size_t is normally a 32-bit type and
does not have sufficient range to represent 64-bit offsets
that can are needed when mapping PCI addresses. Use uint64_t
instead.

Found when attempting to run 32-bit Linux dpdk-testpmd
using VFIO driver:

    EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
    0x200000, 0x20000000000): Invalid argument ((nil))

Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
Cc: stable@dpdk.org
Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
---
v3: Use PRIx64 instead of llx to format offset in log message.
v2: Use uint64_t instead of off_t (off_t is unknown to Windows).

 lib/eal/include/rte_eal_paging.h |  2 +-
 lib/eal/unix/eal_unix_memory.c   | 11 ++++++-----
 lib/eal/windows/eal_memory.c     |  2 +-
 3 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/lib/eal/include/rte_eal_paging.h b/lib/eal/include/rte_eal_paging.h
index ed98e70e9e..c60317d0f5 100644
--- a/lib/eal/include/rte_eal_paging.h
+++ b/lib/eal/include/rte_eal_paging.h
@@ -61,7 +61,7 @@ enum rte_map_flags {
 __rte_internal
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset);
+	int fd, uint64_t offset);
 
 /**
  * OS-independent implementation of POSIX munmap(3).
diff --git a/lib/eal/unix/eal_unix_memory.c b/lib/eal/unix/eal_unix_memory.c
index ec7156df96..68ae93bd6e 100644
--- a/lib/eal/unix/eal_unix_memory.c
+++ b/lib/eal/unix/eal_unix_memory.c
@@ -5,6 +5,7 @@
 #include <string.h>
 #include <sys/mman.h>
 #include <unistd.h>
+#include <inttypes.h>
 
 #include <rte_eal_paging.h>
 #include <rte_errno.h>
@@ -24,14 +25,14 @@
 
 static void *
 mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, uint64_t offset)
 {
 	void *virt = mmap(requested_addr, size, prot, flags, fd, offset);
 	if (virt == MAP_FAILED) {
 		RTE_LOG(DEBUG, EAL,
-			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%zx): %s\n",
-			requested_addr, size, prot, flags, fd, offset,
-			strerror(errno));
+		    "Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%"PRIx64"): %s\n",
+		    requested_addr, size, prot, flags, fd, offset,
+		    strerror(errno));
 		rte_errno = errno;
 		return NULL;
 	}
@@ -106,7 +107,7 @@ mem_rte_to_sys_prot(int prot)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, uint64_t offset)
 {
 	int sys_flags = 0;
 	int sys_prot;
diff --git a/lib/eal/windows/eal_memory.c b/lib/eal/windows/eal_memory.c
index 2cf5a5e649..4db048ccb5 100644
--- a/lib/eal/windows/eal_memory.c
+++ b/lib/eal/windows/eal_memory.c
@@ -508,7 +508,7 @@ eal_mem_set_dump(void *virt, size_t size, bool dump)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, uint64_t offset)
 {
 	HANDLE file_handle = INVALID_HANDLE_VALUE;
 	HANDLE mapping_handle = INVALID_HANDLE_VALUE;
-- 
2.25.1

[dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 2951 bytes --]

For 32-bit targets, size_t is normally a 32-bit type and
does not have sufficient range to represent 64-bit offsets
that can are needed when mapping PCI addresses. Use uint64_t
instead.

Found when attempting to run 32-bit Linux dpdk-testpmd
using VFIO driver:

    EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
    0x200000, 0x20000000000): Invalid argument ((nil))

Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
Cc: stable@dpdk.org
Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
---
v3: Use PRIx64 instead of llx to format offset in log message.
v2: Use uint64_t instead of off_t (off_t is unknown to Windows).

 lib/eal/include/rte_eal_paging.h |  2 +-
 lib/eal/unix/eal_unix_memory.c   | 11 ++++++-----
 lib/eal/windows/eal_memory.c     |  2 +-
 3 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/lib/eal/include/rte_eal_paging.h b/lib/eal/include/rte_eal_paging.h
index ed98e70e9e..c60317d0f5 100644
--- a/lib/eal/include/rte_eal_paging.h
+++ b/lib/eal/include/rte_eal_paging.h
@@ -61,7 +61,7 @@ enum rte_map_flags {
 __rte_internal
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset);
+	int fd, uint64_t offset);
 
 /**
  * OS-independent implementation of POSIX munmap(3).
diff --git a/lib/eal/unix/eal_unix_memory.c b/lib/eal/unix/eal_unix_memory.c
index ec7156df96..68ae93bd6e 100644
--- a/lib/eal/unix/eal_unix_memory.c
+++ b/lib/eal/unix/eal_unix_memory.c
@@ -5,6 +5,7 @@
 #include <string.h>
 #include <sys/mman.h>
 #include <unistd.h>
+#include <inttypes.h>
 
 #include <rte_eal_paging.h>
 #include <rte_errno.h>
@@ -24,14 +25,14 @@
 
 static void *
 mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, uint64_t offset)
 {
 	void *virt = mmap(requested_addr, size, prot, flags, fd, offset);
 	if (virt == MAP_FAILED) {
 		RTE_LOG(DEBUG, EAL,
-			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%zx): %s\n",
-			requested_addr, size, prot, flags, fd, offset,
-			strerror(errno));
+		    "Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%"PRIx64"): %s\n",
+		    requested_addr, size, prot, flags, fd, offset,
+		    strerror(errno));
 		rte_errno = errno;
 		return NULL;
 	}
@@ -106,7 +107,7 @@ mem_rte_to_sys_prot(int prot)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, uint64_t offset)
 {
 	int sys_flags = 0;
 	int sys_prot;
diff --git a/lib/eal/windows/eal_memory.c b/lib/eal/windows/eal_memory.c
index 2cf5a5e649..4db048ccb5 100644
--- a/lib/eal/windows/eal_memory.c
+++ b/lib/eal/windows/eal_memory.c
@@ -508,7 +508,7 @@ eal_mem_set_dump(void *virt, size_t size, bool dump)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, uint64_t offset)
 {
 	HANDLE file_handle = INVALID_HANDLE_VALUE;
 	HANDLE mapping_handle = INVALID_HANDLE_VALUE;
-- 
2.25.1

Re: [dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets

[Thomas Monjalon]

+Cc Anatoly

08/05/2021 16:27, Lance Richardson:
> For 32-bit targets, size_t is normally a 32-bit type and
> does not have sufficient range to represent 64-bit offsets
> that can are needed when mapping PCI addresses. Use uint64_t
> instead.
> 
> Found when attempting to run 32-bit Linux dpdk-testpmd
> using VFIO driver:
> 
>     EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
>     0x200000, 0x20000000000): Invalid argument ((nil))
> 
> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
> Cc: stable@dpdk.org
> Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> ---
> v3: Use PRIx64 instead of llx to format offset in log message.
> v2: Use uint64_t instead of off_t (off_t is unknown to Windows).
> 
>  lib/eal/include/rte_eal_paging.h |  2 +-
>  lib/eal/unix/eal_unix_memory.c   | 11 ++++++-----
>  lib/eal/windows/eal_memory.c     |  2 +-
>  3 files changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/lib/eal/include/rte_eal_paging.h b/lib/eal/include/rte_eal_paging.h
> index ed98e70e9e..c60317d0f5 100644
> --- a/lib/eal/include/rte_eal_paging.h
> +++ b/lib/eal/include/rte_eal_paging.h
> @@ -61,7 +61,7 @@ enum rte_map_flags {
>  __rte_internal
>  void *
>  rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
> -	int fd, size_t offset);
> +	int fd, uint64_t offset);
>  
>  /**
>   * OS-independent implementation of POSIX munmap(3).
> diff --git a/lib/eal/unix/eal_unix_memory.c b/lib/eal/unix/eal_unix_memory.c
> index ec7156df96..68ae93bd6e 100644
> --- a/lib/eal/unix/eal_unix_memory.c
> +++ b/lib/eal/unix/eal_unix_memory.c
> @@ -5,6 +5,7 @@
>  #include <string.h>
>  #include <sys/mman.h>
>  #include <unistd.h>
> +#include <inttypes.h>
>  
>  #include <rte_eal_paging.h>
>  #include <rte_errno.h>
> @@ -24,14 +25,14 @@
>  
>  static void *
>  mem_map(void *requested_addr, size_t size, int prot, int flags,
> -	int fd, size_t offset)
> +	int fd, uint64_t offset)
>  {
>  	void *virt = mmap(requested_addr, size, prot, flags, fd, offset);
>  	if (virt == MAP_FAILED) {
>  		RTE_LOG(DEBUG, EAL,
> -			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%zx): %s\n",
> -			requested_addr, size, prot, flags, fd, offset,
> -			strerror(errno));
> +		    "Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%"PRIx64"): %s\n",
> +		    requested_addr, size, prot, flags, fd, offset,
> +		    strerror(errno));
>  		rte_errno = errno;
>  		return NULL;
>  	}
> @@ -106,7 +107,7 @@ mem_rte_to_sys_prot(int prot)
>  
>  void *
>  rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
> -	int fd, size_t offset)
> +	int fd, uint64_t offset)
>  {
>  	int sys_flags = 0;
>  	int sys_prot;
> diff --git a/lib/eal/windows/eal_memory.c b/lib/eal/windows/eal_memory.c
> index 2cf5a5e649..4db048ccb5 100644
> --- a/lib/eal/windows/eal_memory.c
> +++ b/lib/eal/windows/eal_memory.c
> @@ -508,7 +508,7 @@ eal_mem_set_dump(void *virt, size_t size, bool dump)
>  
>  void *
>  rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
> -	int fd, size_t offset)
> +	int fd, uint64_t offset)
>  {
>  	HANDLE file_handle = INVALID_HANDLE_VALUE;
>  	HANDLE mapping_handle = INVALID_HANDLE_VALUE;
> 

Re: [dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets

[Burakov, Anatoly]

On 10-May-21 1:42 PM, Thomas Monjalon wrote:
> +Cc Anatoly
> 
> 08/05/2021 16:27, Lance Richardson:
>> For 32-bit targets, size_t is normally a 32-bit type and
>> does not have sufficient range to represent 64-bit offsets
>> that can are needed when mapping PCI addresses. Use uint64_t
>> instead.
>>
>> Found when attempting to run 32-bit Linux dpdk-testpmd
>> using VFIO driver:
>>
>>      EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
>>      0x200000, 0x20000000000): Invalid argument ((nil))
>>
>> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
>> Cc: stable@dpdk.org
>> Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
>> ---

LGTM, although the Fixes: tag is probably wrong because IIRC previous 
versions did have the same issue.

Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>

-- 
Thanks,
Anatoly

Re: [dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets

[Thomas Monjalon]

10/05/2021 17:31, Burakov, Anatoly:
> On 10-May-21 1:42 PM, Thomas Monjalon wrote:
> > +Cc Anatoly
> > 
> > 08/05/2021 16:27, Lance Richardson:
> >> For 32-bit targets, size_t is normally a 32-bit type and
> >> does not have sufficient range to represent 64-bit offsets
> >> that can are needed when mapping PCI addresses. Use uint64_t
> >> instead.
> >>
> >> Found when attempting to run 32-bit Linux dpdk-testpmd
> >> using VFIO driver:
> >>
> >>      EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
> >>      0x200000, 0x20000000000): Invalid argument ((nil))
> >>
> >> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
> >> Cc: stable@dpdk.org
> >> Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> >> ---
> 
> LGTM, although the Fixes: tag is probably wrong because IIRC previous 
> versions did have the same issue.

What should be the right Fixes tag Anatoly?

Re: [dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 1306 bytes --]

On Mon, May 10, 2021 at 11:55 AM Thomas Monjalon <thomas@monjalon.net>
wrote:

> 10/05/2021 17:31, Burakov, Anatoly:
> > On 10-May-21 1:42 PM, Thomas Monjalon wrote:
> > > +Cc Anatoly
> > >
> > > 08/05/2021 16:27, Lance Richardson:
> > >> For 32-bit targets, size_t is normally a 32-bit type and
> > >> does not have sufficient range to represent 64-bit offsets
> > >> that can are needed when mapping PCI addresses. Use uint64_t
> > >> instead.
> > >>
> > >> Found when attempting to run 32-bit Linux dpdk-testpmd
> > >> using VFIO driver:
> > >>
> > >>      EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
> > >>      0x200000, 0x20000000000): Invalid argument ((nil))
> > >>
> > >> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
> > >> Cc: stable@dpdk.org
> > >> Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> > >> ---
> >
> > LGTM, although the Fixes: tag is probably wrong because IIRC previous
> > versions did have the same issue.
>
> What should be the right Fixes tag Anatoly?
>

I think this would be more appropriate (prior to this commit,
pci_map_resource()
called mmap() directly with off_t offset, with this commit offset was
narrowed
to size_t before calling mmap()):

Fixes: 2fd3567e5425 ("pci: use OS generic memory mapping functions")

Re: [dpdk-dev] [dpdk-stable] [PATCH v3] eal: fix memory mapping for 32-bit targets

[Thomas Monjalon]

10/05/2021 18:04, Lance Richardson:
> On Mon, May 10, 2021 at 11:55 AM Thomas Monjalon <thomas@monjalon.net>
> wrote:
> 
> > 10/05/2021 17:31, Burakov, Anatoly:
> > > On 10-May-21 1:42 PM, Thomas Monjalon wrote:
> > > > +Cc Anatoly
> > > >
> > > > 08/05/2021 16:27, Lance Richardson:
> > > >> For 32-bit targets, size_t is normally a 32-bit type and
> > > >> does not have sufficient range to represent 64-bit offsets
> > > >> that can are needed when mapping PCI addresses. Use uint64_t
> > > >> instead.
> > > >>
> > > >> Found when attempting to run 32-bit Linux dpdk-testpmd
> > > >> using VFIO driver:
> > > >>
> > > >>      EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
> > > >>      0x200000, 0x20000000000): Invalid argument ((nil))
> > > >>
> > > >> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
> > > >> Cc: stable@dpdk.org
> > > >> Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> > > >> ---
> > >
> > > LGTM, although the Fixes: tag is probably wrong because IIRC previous
> > > versions did have the same issue.
> >
> > What should be the right Fixes tag Anatoly?
> >
> 
> I think this would be more appropriate (prior to this commit,
> pci_map_resource()
> called mmap() directly with off_t offset, with this commit offset was
> narrowed
> to size_t before calling mmap()):
> 
> Fixes: 2fd3567e5425 ("pci: use OS generic memory mapping functions")

That's only one usage of rte_mem_map.
I prefer the original Fixes: line.

Re: [dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets

[Thomas Monjalon]

08/05/2021 16:27, Lance Richardson:
> For 32-bit targets, size_t is normally a 32-bit type and
> does not have sufficient range to represent 64-bit offsets
> that can are needed when mapping PCI addresses. Use uint64_t
> instead.
> 
> Found when attempting to run 32-bit Linux dpdk-testpmd
> using VFIO driver:
> 
>     EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
>     0x200000, 0x20000000000): Invalid argument ((nil))
> 
> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
> Cc: stable@dpdk.org
> Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> ---
> v3: Use PRIx64 instead of llx to format offset in log message.
> v2: Use uint64_t instead of off_t (off_t is unknown to Windows).

off_t is referenced in drivers/bus/pci/windows/pci.c
(for unused parameter) so it should be fine?
If not, we could add it?

Re: [dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 1360 bytes --]

On Tue, May 11, 2021 at 4:18 AM Thomas Monjalon <thomas@monjalon.net> wrote:
>
> 08/05/2021 16:27, Lance Richardson:
> > For 32-bit targets, size_t is normally a 32-bit type and
> > does not have sufficient range to represent 64-bit offsets
> > that can are needed when mapping PCI addresses. Use uint64_t
> > instead.
> >
> > Found when attempting to run 32-bit Linux dpdk-testpmd
> > using VFIO driver:
> >
> >     EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
> >     0x200000, 0x20000000000): Invalid argument ((nil))
> >
> > Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
> > Cc: stable@dpdk.org
> > Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> > ---
> > v3: Use PRIx64 instead of llx to format offset in log message.
> > v2: Use uint64_t instead of off_t (off_t is unknown to Windows).
>
> off_t is referenced in drivers/bus/pci/windows/pci.c
> (for unused parameter) so it should be fine?
> If not, we could add it?

 v1 of the patch had the following build error in CI:

   *Build Failed #1:
   OS: WIN10-64
   Target: x86_64-windows-clang
   FAILED: lib/librte_eal.a.p/eal_common_eal_common_fbarray.c.obj
   ....
   In file included from ../lib/eal/common/eal_common_fbarray.c:14:
   ..\lib\eal\include\rte_eal_paging.h:64:10: error: unknown type name 'off_t'
           int fd, off_t offset);

[dpdk-dev] [PATCH v4] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 3115 bytes --]

For 32-bit targets, size_t is normally a 32-bit type and
does not have sufficient range to represent 64-bit offsets
that can are needed when mapping PCI addresses. Use off_t
instead, which is usually a 64-bit type when compiled with
_D_FILE_OFFSET_BITS=64 as is the case for DPDK.

Found when attempting to run 32-bit Linux dpdk-testpmd
using VFIO driver:

    EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
    0x200000, 0x20000000000): Invalid argument ((nil))

Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
Cc: stable@dpdk.org
Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
---
 v4: Identical to v1, with <sys/types.h> now included in rte_eal_paging.h
     to (hopefully) make off_t available for Windows builds.
 v3: Use PRIx64 instead of llx ot format offset in log message.
 v2: Use uint64_t instead of off_t (off_t is unknown to Windows).

 lib/eal/include/rte_eal_paging.h |  3 ++-
 lib/eal/unix/eal_unix_memory.c   | 10 +++++-----
 lib/eal/windows/eal_memory.c     |  2 +-
 3 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/lib/eal/include/rte_eal_paging.h b/lib/eal/include/rte_eal_paging.h
index ed98e70e9e..974bf5ee64 100644
--- a/lib/eal/include/rte_eal_paging.h
+++ b/lib/eal/include/rte_eal_paging.h
@@ -3,6 +3,7 @@
  */
 
 #include <stdint.h>
+#include <sys/types.h>
 
 #include <rte_compat.h>
 
@@ -61,7 +62,7 @@ enum rte_map_flags {
 __rte_internal
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset);
+	int fd, off_t offset);
 
 /**
  * OS-independent implementation of POSIX munmap(3).
diff --git a/lib/eal/unix/eal_unix_memory.c b/lib/eal/unix/eal_unix_memory.c
index ec7156df96..51a42e1a43 100644
--- a/lib/eal/unix/eal_unix_memory.c
+++ b/lib/eal/unix/eal_unix_memory.c
@@ -24,14 +24,14 @@
 
 static void *
 mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, off_t offset)
 {
 	void *virt = mmap(requested_addr, size, prot, flags, fd, offset);
 	if (virt == MAP_FAILED) {
 		RTE_LOG(DEBUG, EAL,
-			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%zx): %s\n",
-			requested_addr, size, prot, flags, fd, offset,
-			strerror(errno));
+			"Cannot mmap(%p, 0x%zx, 0x%x, 0x%x, %d, 0x%llx): %s\n",
+			requested_addr, size, prot, flags, fd,
+			(unsigned long long)offset, strerror(errno));
 		rte_errno = errno;
 		return NULL;
 	}
@@ -106,7 +106,7 @@ mem_rte_to_sys_prot(int prot)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, off_t offset)
 {
 	int sys_flags = 0;
 	int sys_prot;
diff --git a/lib/eal/windows/eal_memory.c b/lib/eal/windows/eal_memory.c
index 2cf5a5e649..f1c4b03e96 100644
--- a/lib/eal/windows/eal_memory.c
+++ b/lib/eal/windows/eal_memory.c
@@ -508,7 +508,7 @@ eal_mem_set_dump(void *virt, size_t size, bool dump)
 
 void *
 rte_mem_map(void *requested_addr, size_t size, int prot, int flags,
-	int fd, size_t offset)
+	int fd, off_t offset)
 {
 	HANDLE file_handle = INVALID_HANDLE_VALUE;
 	HANDLE mapping_handle = INVALID_HANDLE_VALUE;
-- 
2.25.1

Re: [dpdk-dev] [PATCH v4] eal: fix memory mapping for 32-bit targets

[Lance Richardson]

[-- Attachment #1: Type: text/plain, Size: 658 bytes --]

>  v4: Identical to v1, with <sys/types.h> now included in rte_eal_paging.h
>      to (hopefully) make off_t available for Windows builds.

With this version, using off_t is no longer a problem, however based on the
new compilation error it appears that for Windows, off_t is a 32-bit type
while size_t is a 64-bit type:

../lib/eal/windows/eal_memory.c:519:37: error: shift count >= width of
type [-Werror,-Wshift-count-overflow]
DWORD offset_high = (DWORD)(offset >> 32);
^  ~~

So the options seem to be to either use uint64_t for the offset parameter
as in patch v3, or else introduce something like:
     typedef uint64_t rte_off_t;

Thoughts/opinions?

Re: [dpdk-dev] [PATCH v4] eal: fix memory mapping for 32-bit targets

[Dmitry Kozlyuk]

2021-05-11 11:56 (UTC-0400), Lance Richardson:
> >  v4: Identical to v1, with <sys/types.h> now included in rte_eal_paging.h
> >      to (hopefully) make off_t available for Windows builds.  
> 
> With this version, using off_t is no longer a problem, however based on the
> new compilation error it appears that for Windows, off_t is a 32-bit type
> while size_t is a 64-bit type:
> 
> ../lib/eal/windows/eal_memory.c:519:37: error: shift count >= width of
> type [-Werror,-Wshift-count-overflow]
> DWORD offset_high = (DWORD)(offset >> 32);
> ^  ~~
> 
> So the options seem to be to either use uint64_t for the offset parameter
> as in patch v3, or else introduce something like:
>      typedef uint64_t rte_off_t;
> 
> Thoughts/opinions?

I'm for uint64_t: it's explicit and will hardly ever change.

Re: [dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets

[Thomas Monjalon]

10/05/2021 17:31, Burakov, Anatoly:
> On 10-May-21 1:42 PM, Thomas Monjalon wrote:
> > +Cc Anatoly
> > 
> > 08/05/2021 16:27, Lance Richardson:
> >> For 32-bit targets, size_t is normally a 32-bit type and
> >> does not have sufficient range to represent 64-bit offsets
> >> that can are needed when mapping PCI addresses. Use uint64_t
> >> instead.
> >>
> >> Found when attempting to run 32-bit Linux dpdk-testpmd
> >> using VFIO driver:
> >>
> >>      EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
> >>      0x200000, 0x20000000000): Invalid argument ((nil))
> >>
> >> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
> >> Cc: stable@dpdk.org
> >> Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> >> ---
> 
> LGTM, although the Fixes: tag is probably wrong because IIRC previous 
> versions did have the same issue.
> 
> Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>

v3 applied, thanks

Re: [dpdk-dev] [PATCH v4] eal: fix memory mapping for 32-bit targets

[Thomas Monjalon]

11/05/2021 18:08, Dmitry Kozlyuk:
> 2021-05-11 11:56 (UTC-0400), Lance Richardson:
> > >  v4: Identical to v1, with <sys/types.h> now included in rte_eal_paging.h
> > >      to (hopefully) make off_t available for Windows builds.  
> > 
> > With this version, using off_t is no longer a problem, however based on the
> > new compilation error it appears that for Windows, off_t is a 32-bit type
> > while size_t is a 64-bit type:
> > 
> > ../lib/eal/windows/eal_memory.c:519:37: error: shift count >= width of
> > type [-Werror,-Wshift-count-overflow]
> > DWORD offset_high = (DWORD)(offset >> 32);
> > ^  ~~
> > 
> > So the options seem to be to either use uint64_t for the offset parameter
> > as in patch v3, or else introduce something like:
> >      typedef uint64_t rte_off_t;
> > 
> > Thoughts/opinions?
> 
> I'm for uint64_t: it's explicit and will hardly ever change.

OK, v3 applied.