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From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, aneesh.kumar@linux.ibm.com,
	dalias@libc.org, daniel@thingy.jp, geert+renesas@glider.be,
	jacopo+renesas@jmondi.org, linux-mm@kvack.org,
	mm-commits@vger.kernel.org, rob@landley.net,
	torvalds@linux-foundation.org, ysato@users.osdn.me
Subject: [patch 13/16] sh: pgtable-3level: fix cast to pointer from integer of different size
Date: Fri, 24 Sep 2021 15:43:57 -0700	[thread overview]
Message-ID: <20210924224357.vxbK4xVVa%akpm@linux-foundation.org> (raw)
In-Reply-To: <20210924154257.1dbf6699ab8d88c0460f924f@linux-foundation.org>

From: Geert Uytterhoeven <geert+renesas@glider.be>
Subject: sh: pgtable-3level: fix cast to pointer from integer of different size

If X2TLB=y (CPU_SHX2=y or CPU_SHX3=y, e.g. migor_defconfig), pgd_t.pgd
is "unsigned long long", causing:

    In file included from arch/sh/include/asm/pgtable.h:13,
		     from include/linux/pgtable.h:6,
		     from include/linux/mm.h:33,
		     from arch/sh/kernel/asm-offsets.c:14:
    arch/sh/include/asm/pgtable-3level.h: In function `pud_pgtable':
    arch/sh/include/asm/pgtable-3level.h:37:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
       37 |  return (pmd_t *)pud_val(pud);
	  |         ^

Fix this by adding an intermediate cast to "unsigned long", which is
basically what the old code did before.

Link: https://lkml.kernel.org/r/2c2eef3c9a2f57e5609100a4864715ccf253d30f.1631713483.git.geert+renesas@glider.be
Fixes: 9cf6fa2458443118 ("mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Daniel Palmer <daniel@thingy.jp>
Acked-by: Rob Landley <rob@landley.net>
Cc: Yoshinori Sato <ysato@users.osdn.me>
Cc: Rich Felker <dalias@libc.org>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Cc: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/sh/include/asm/pgtable-3level.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/sh/include/asm/pgtable-3level.h~sh-pgtable-3level-fix-cast-to-pointer-from-integer-of-different-size
+++ a/arch/sh/include/asm/pgtable-3level.h
@@ -34,7 +34,7 @@ typedef struct { unsigned long long pmd;
 
 static inline pmd_t *pud_pgtable(pud_t pud)
 {
-	return (pmd_t *)pud_val(pud);
+	return (pmd_t *)(unsigned long)pud_val(pud);
 }
 
 /* only used by the stubbed out hugetlb gup code, should never be called */
_

  parent reply	other threads:[~2021-09-24 22:43 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-24 22:42 incoming Andrew Morton
2021-09-24 22:43 ` [patch 01/16] mm, hwpoison: add is_free_buddy_page() in HWPoisonHandlable() Andrew Morton
2021-09-24 22:43 ` [patch 02/16] kasan: fix Kconfig check of CC_HAS_WORKING_NOSANITIZE_ADDRESS Andrew Morton
2021-09-24 22:43 ` [patch 03/16] mm/damon: don't use strnlen() with known-bogus source length Andrew Morton
2021-09-24 22:43 ` [patch 04/16] xtensa: increase size of gcc stack frame check Andrew Morton
2021-09-24 22:43 ` [patch 05/16] mm/shmem.c: fix judgment error in shmem_is_huge() Andrew Morton
2021-09-24 22:43 ` [patch 06/16] ocfs2: drop acl cache for directories too Andrew Morton
2021-09-24 22:43 ` [patch 07/16] scripts/sorttable: riscv: fix undeclared identifier 'EM_RISCV' error Andrew Morton
2021-09-24 22:43 ` [patch 08/16] tools/vm/page-types: remove dependency on opt_file for idle page tracking Andrew Morton
2021-09-24 22:43 ` [patch 09/16] lib/zlib_inflate/inffast: check config in C to avoid unused function warning Andrew Morton
2021-09-24 22:43 ` [patch 10/16] mm: fs: invalidate bh_lrus for only cold path Andrew Morton
2021-09-24 22:43 ` [patch 11/16] mm/debug: sync up MR_CONTIG_RANGE and MR_LONGTERM_PIN Andrew Morton
2021-09-24 22:43 ` [patch 12/16] mm/debug: sync up latest migrate_reason to migrate_reason_names Andrew Morton
2021-09-24 22:43 ` Andrew Morton [this message]
2021-09-24 22:44 ` [patch 14/16] kasan: always respect CONFIG_KASAN_STACK Andrew Morton
2021-09-24 22:44 ` [patch 15/16] mm/memory_failure: fix the missing pte_unmap() call Andrew Morton
2021-09-24 22:44 ` [patch 16/16] mm: fix uninitialized use in overcommit_policy_handler Andrew Morton

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