Re: [PATCH v6 02/19] hexagon: mm: Convert to GENERIC_IOREMAP

[Baoquan He <bhe@redhat.com>]

On 06/09/23 at 07:09pm, kernel test robot wrote:
> Hi Baoquan,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on akpm-mm/mm-everything]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Baoquan-He/asm-generic-iomap-h-remove-ARCH_HAS_IOREMAP_xx-macros/20230609-160014
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link:    https://lore.kernel.org/r/20230609075528.9390-3-bhe%40redhat.com
> patch subject: [PATCH v6 02/19] hexagon: mm: Convert to GENERIC_IOREMAP
> config: hexagon-randconfig-r041-20230608 (https://download.01.org/0day-ci/archive/20230609/202306091859.NhlW2nny-lkp@intel.com/config)
> compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
> reproduce (this is a W=1 build):
>         mkdir -p ~/bin
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git
>         git fetch akpm-mm mm-everything
>         git checkout akpm-mm/mm-everything
>         b4 shazam https://lore.kernel.org/r/20230609075528.9390-3-bhe@redhat.com
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon prepare
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202306091859.NhlW2nny-lkp@intel.com/

Thanks for reporting. I reproduced them on my local machine. Below patch
can fix them. And by the way, I also saw the clone3 warning, and have to 
made change in scripts/checksyscalls.sh to mute it, wondering how you
handle it in your testing.

------
stdin>:1520:2: warning: syscall clone3 not implemented [-W#warnings]
 1520 | #warning syscall clone3 not implemented
      |  ^
1 warning generated.

------
diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh
index 1e5d2eeb726d..3a369b78edb7 100755
--- a/scripts/checksyscalls.sh
+++ b/scripts/checksyscalls.sh
@@ -148,6 +148,7 @@ cat << EOF
 #define __IGNORE_nanosleep
 #define __IGNORE_io_getevents
 #define __IGNORE_recvmmsg
+#define __IGNORE_clone3
 #endif


From 6a86f4360a61a2b7b4d71172e5c03be554367553 Mon Sep 17 00:00:00 2001
From: root <root@dell-pem620-01.dell2.lab.eng.bos.redhat.com>
Date: Fri, 9 Jun 2023 21:21:36 -0400
Subject: [PATCH] hexagon: mm: fix warning in asm/io.h
Content-type: text/plain

Remove the old iounmap() declaration which is not consistent with the
standard one in asm-generic/io.h, let's use the standard one.

And also add macro definition of inb/w/l and outb/w/l to override
the definition of them in asm-generic/io.h.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Baoquan He <bhe@redhat.com>
---
 arch/hexagon/include/asm/io.h | 8 ++++++--
 scripts/checksyscalls.sh      | 1 +
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/hexagon/include/asm/io.h b/arch/hexagon/include/asm/io.h
index dcd9cbbf5934..efe9cb00ebf8 100644
--- a/arch/hexagon/include/asm/io.h
+++ b/arch/hexagon/include/asm/io.h
@@ -27,8 +27,6 @@
 extern int remap_area_pages(unsigned long start, unsigned long phys_addr,
 				unsigned long end, unsigned long flags);
 
-extern void iounmap(const volatile void __iomem *addr);
-
 /* Defined in lib/io.c, needed for smc91x driver. */
 extern void __raw_readsw(const void __iomem *addr, void *data, int wordlen);
 extern void __raw_writesw(void __iomem *addr, const void *data, int wordlen);
@@ -207,16 +205,19 @@ static inline void memset_io(volatile void __iomem *addr, int value,
  *
  * Operates on "I/O bus I/O space"
  */
+#define inb inb
 static inline u8 inb(unsigned long port)
 {
 	return readb(_IO_BASE + (port & IO_SPACE_LIMIT));
 }
 
+#define inw inw
 static inline u16 inw(unsigned long port)
 {
 	return readw(_IO_BASE + (port & IO_SPACE_LIMIT));
 }
 
+#define inl inl
 static inline u32 inl(unsigned long port)
 {
 	return readl(_IO_BASE + (port & IO_SPACE_LIMIT));
@@ -227,16 +228,19 @@ static inline u32 inl(unsigned long port)
  * @data: data to write to
  * @addr:  address in I/O space
  */
+#define outb outb
 static inline void outb(u8 data, unsigned long port)
 {
 	writeb(data, _IO_BASE + (port & IO_SPACE_LIMIT));
 }
 
+#define outw outw
 static inline void outw(u16 data, unsigned long port)
 {
 	writew(data, _IO_BASE + (port & IO_SPACE_LIMIT));
 }
 
+#define outl outl
 static inline void outl(u32 data, unsigned long port)
 {
 	writel(data, _IO_BASE + (port & IO_SPACE_LIMIT));