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powerpc/mm: Remove unneeded #ifdef CONFIG_PPC_MEM_KEYS

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In fault.c, #ifdef CONFIG_PPC_MEM_KEYS is not needed because all
functions are always defined, and arch_vma_access_permitted()
always returns true when CONFIG_PPC_MEM_KEYS is not defined so
access_pkey_error() will return false so bad_access_pkey()
will never be called.

Include linux/pkeys.h to get a definition of vma_pkeys() for
bad_access_pkey().

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/8038392f38d81f2ad169347efac29146f553b238.1615819955.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2021-03-15 14:52:51 +00:00 committed by Michael Ellerman
parent b77878052a
commit 98c26a7275
1 changed files with 1 additions and 6 deletions
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7
arch/powerpc/mm/fault.c
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@ -33,6 +33,7 @@
#include <linux/hugetlb.h>
#include <linux/uaccess.h>
#include <linux/kfence.h>
#include <linux/pkeys.h>
#include <asm/firmware.h>
#include <asm/interrupt.h>
@ -88,7 +89,6 @@ static noinline int bad_area(struct pt_regs *regs, unsigned long address)
return __bad_area(regs, address, SEGV_MAPERR);
}
#ifdef CONFIG_PPC_MEM_KEYS
static noinline int bad_access_pkey(struct pt_regs *regs, unsigned long address,
struct vm_area_struct *vma)
{
@ -128,7 +128,6 @@ static noinline int bad_access_pkey(struct pt_regs *regs, unsigned long address,
return 0;
}
#endif
static noinline int bad_access(struct pt_regs *regs, unsigned long address)
{
@ -235,7 +234,6 @@ static bool bad_kernel_fault(struct pt_regs *regs, unsigned long error_code,
return false;
}
#ifdef CONFIG_PPC_MEM_KEYS
static bool access_pkey_error(bool is_write, bool is_exec, bool is_pkey,
struct vm_area_struct *vma)
{
@ -249,7 +247,6 @@ static bool access_pkey_error(bool is_write, bool is_exec, bool is_pkey,
return false;
}
#endif
static bool access_error(bool is_write, bool is_exec, struct vm_area_struct *vma)
{
@ -497,11 +494,9 @@ static int ___do_page_fault(struct pt_regs *regs, unsigned long address,
return bad_area(regs, address);
}
#ifdef CONFIG_PPC_MEM_KEYS
if (unlikely(access_pkey_error(is_write, is_exec,
(error_code & DSISR_KEYFAULT), vma)))
return bad_access_pkey(regs, address, vma);
#endif /* CONFIG_PPC_MEM_KEYS */
if (unlikely(access_error(is_write, is_exec, vma)))
return bad_access(regs, address);