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* [PATCH] RDMA/siw: Solve the error of compiling the 32BIT mips kernel when enable CONFIG_RDMA_SIW
@ 2022-09-01  5:51 jianghaoran
  2022-09-22 17:02 ` Jason Gunthorpe
  0 siblings, 1 reply; 6+ messages in thread
From: jianghaoran @ 2022-09-01  5:51 UTC (permalink / raw)
  To: bmt; +Cc: jgg, leon, linux-rdma, linux-kernel

cross-compilation environment:
ubuntu 20.04
mips-linux-gnu-gcc (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0

generate a configuration file by make randconfig:
CONFIG_32BIT=y
CONFIG_RDMA_SIW=y

the error message as follows:
In file included from ../arch/mips/include/asm/page.h:270,
                 from ../arch/mips/include/asm/io.h:29,
                 from ../arch/mips/include/asm/mmiowb.h:5,
                 from ../include/linux/spinlock.h:64,
                 from ../include/linux/wait.h:9,
                 from ../include/linux/net.h:19,
                 from ../drivers/infiniband/sw/siw/siw_qp_tx.c:8:
../drivers/infiniband/sw/siw/siw_qp_tx.c: In function ‘siw_tx_hdt’:
../arch/mips/include/asm/page.h:255:53: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
  255 | #define virt_to_pfn(kaddr)    PFN_DOWN(virt_to_phys((void *)(kaddr)))
      |                                                     ^
../include/asm-generic/memory_model.h:18:41: note: in definition of macro ‘__pfn_to_page’
   18 | #define __pfn_to_page(pfn) (mem_map + ((pfn) - ARCH_PFN_OFFSET))
      |                                         ^~~
../arch/mips/include/asm/page.h:255:31: note: in expansion of macro ‘PFN_DOWN’
  255 | #define virt_to_pfn(kaddr)    PFN_DOWN(virt_to_phys((void *)(kaddr)))
      |                               ^~~~~~~~
../arch/mips/include/asm/page.h:256:41: note: in expansion of macro ‘virt_to_pfn’
  256 | #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
      |                                         ^~~~~~~~~~~
../drivers/infiniband/sw/siw/siw_qp_tx.c:538:23: note: in expansion of macro ‘virt_to_page’
  538 |     page_array[seg] = virt_to_page(va & PAGE_MASK);
      |                       ^~~~~~~~~~~~
cc1: all warnings being treated as errors
make[5]: *** [../scripts/Makefile.build:249: drivers/infiniband/sw/siw/siw_qp_tx.o] Error 1
make[4]: *** [../scripts/Makefile.build:465: drivers/infiniband/sw/siw] Error 2
make[3]: *** [../scripts/Makefile.build:465: drivers/infiniband/sw] Error 2
make[3]: *** Waiting for unfinished jobs....

Reported-by: k2ci <kernel-bot@kylinos.cn>
Signed-off-by: jianghaoran <jianghaoran@kylinos.cn>
---
 drivers/infiniband/sw/siw/siw_qp_tx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/sw/siw/siw_qp_tx.c b/drivers/infiniband/sw/siw/siw_qp_tx.c
index 1f4e60257700..55ed0c27f449 100644
--- a/drivers/infiniband/sw/siw/siw_qp_tx.c
+++ b/drivers/infiniband/sw/siw/siw_qp_tx.c
@@ -533,7 +533,7 @@ static int siw_tx_hdt(struct siw_iwarp_tx *c_tx, struct socket *s)
 					kunmap_local(kaddr);
 				}
 			} else {
-				u64 va = sge->laddr + sge_off;
+				unsigned long va = sge->laddr + sge_off;
 
 				page_array[seg] = virt_to_page(va & PAGE_MASK);
 				if (do_crc)
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* RE: [PATCH] RDMA/siw: Solve the error of compiling the 32BIT mips kernel when enable CONFIG_RDMA_SIW
@ 2022-09-01  7:05 Bernard Metzler
  2022-09-01 11:26 ` jianghaoran
  2022-09-01 13:32 ` Linus Walleij
  0 siblings, 2 replies; 6+ messages in thread
From: Bernard Metzler @ 2022-09-01  7:05 UTC (permalink / raw)
  To: jianghaoran
  Cc: jgg@ziepe.ca, leon@kernel.org, linux-rdma@vger.kernel.org,
	Linus Walleij, linux-kernel@vger.kernel.org



> -----Original Message-----
> From: jianghaoran <jianghaoran@kylinos.cn>
> Sent: Thursday, 1 September 2022 07:52
> To: Bernard Metzler <BMT@zurich.ibm.com>
> Cc: jgg@ziepe.ca; leon@kernel.org; linux-rdma@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Subject: [EXTERNAL] [PATCH] RDMA/siw: Solve the error of compiling the
> 32BIT mips kernel when enable CONFIG_RDMA_SIW
> 
> cross-compilation environment:
> ubuntu 20.04
> mips-linux-gnu-gcc (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0
> 
> generate a configuration file by make randconfig:
> CONFIG_32BIT=y
> CONFIG_RDMA_SIW=y
> 
> the error message as follows:
> In file included from ../arch/mips/include/asm/page.h:270,
>                  from ../arch/mips/include/asm/io.h:29,
>                  from ../arch/mips/include/asm/mmiowb.h:5,
>                  from ../include/linux/spinlock.h:64,
>                  from ../include/linux/wait.h:9,
>                  from ../include/linux/net.h:19,
>                  from ../drivers/infiniband/sw/siw/siw_qp_tx.c:8:
> ../drivers/infiniband/sw/siw/siw_qp_tx.c: In function ‘siw_tx_hdt’:
> ../arch/mips/include/asm/page.h:255:53: error: cast to pointer from integer
> of different size [-Werror=int-to-pointer-cast]
>   255 | #define virt_to_pfn(kaddr)    PFN_DOWN(virt_to_phys((void
> *)(kaddr)))
>       |                                                     ^
> ../include/asm-generic/memory_model.h:18:41: note: in definition of macro
> ‘__pfn_to_page’
>    18 | #define __pfn_to_page(pfn) (mem_map + ((pfn) - ARCH_PFN_OFFSET))
>       |                                         ^~~
> ../arch/mips/include/asm/page.h:255:31: note: in expansion of macro
> ‘PFN_DOWN’
>   255 | #define virt_to_pfn(kaddr)    PFN_DOWN(virt_to_phys((void
> *)(kaddr)))
>       |                               ^~~~~~~~
> ../arch/mips/include/asm/page.h:256:41: note: in expansion of macro
> ‘virt_to_pfn’
>   256 | #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
>       |                                         ^~~~~~~~~~~
> ../drivers/infiniband/sw/siw/siw_qp_tx.c:538:23: note: in expansion of
> macro ‘virt_to_page’
>   538 |     page_array[seg] = virt_to_page(va & PAGE_MASK);
>       |                       ^~~~~~~~~~~~
> cc1: all warnings being treated as errors
> make[5]: *** [../scripts/Makefile.build:249:
> drivers/infiniband/sw/siw/siw_qp_tx.o] Error 1
> make[4]: *** [../scripts/Makefile.build:465: drivers/infiniband/sw/siw]
> Error 2
> make[3]: *** [../scripts/Makefile.build:465: drivers/infiniband/sw] Error 2
> make[3]: *** Waiting for unfinished jobs....
> 
> Reported-by: k2ci <kernel-bot@kylinos.cn>
> Signed-off-by: jianghaoran <jianghaoran@kylinos.cn>
> ---
>  drivers/infiniband/sw/siw/siw_qp_tx.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/infiniband/sw/siw/siw_qp_tx.c
> b/drivers/infiniband/sw/siw/siw_qp_tx.c
> index 1f4e60257700..55ed0c27f449 100644
> --- a/drivers/infiniband/sw/siw/siw_qp_tx.c
> +++ b/drivers/infiniband/sw/siw/siw_qp_tx.c
> @@ -533,7 +533,7 @@ static int siw_tx_hdt(struct siw_iwarp_tx *c_tx, struct
> socket *s)
>  					kunmap_local(kaddr);
>  				}
>  			} else {
> -				u64 va = sge->laddr + sge_off;
> +				unsigned long va = sge->laddr + sge_off;
> 

We discussed same thing a few days ago - see PATCH from Linus:
'[PATCH] RDMA/siw: Pass a pointer to virt_to_page()'

While he suggested casting, I think it would be better to change
'u64' to 'uintptr_t'. I'd prefer 'uintptr_t' over 'unsigned long'
for readability -- since we hold a pointer.
It would also simplify a cast of va a few lines down in
virt_to_page().

Could one of you two re-send?

Thanks Jianghaoran!

Bernard.

>  				page_array[seg] = virt_to_page(va & PAGE_MASK);
>  				if (do_crc)
> --
> 2.25.1


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2022-09-22 17:03 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2022-09-01  5:51 [PATCH] RDMA/siw: Solve the error of compiling the 32BIT mips kernel when enable CONFIG_RDMA_SIW jianghaoran
2022-09-22 17:02 ` Jason Gunthorpe
  -- strict thread matches above, loose matches on Subject: below --
2022-09-01  7:05 Bernard Metzler
2022-09-01 11:26 ` jianghaoran
2022-09-01 12:35   ` Leon Romanovsky
2022-09-01 13:32 ` Linus Walleij

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