From: Khalid Aziz <khalid.aziz@oracle.com>
To: Anshuman Khandual <anshuman.khandual@arm.com>,
linux-mm@kvack.org, akpm@linux-foundation.org
Cc: Christoph Hellwig <hch@infradead.org>,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org, sparclinux@vger.kernel.org,
linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH V4 4/7] sparc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
Date: Thu, 7 Apr 2022 09:22:39 -0600 [thread overview]
Message-ID: <5ee768d3-6978-8c7d-1381-5f1a0a8c7471@oracle.com> (raw)
In-Reply-To: <20220407103251.1209606-5-anshuman.khandual@arm.com>
On 4/7/22 04:32, Anshuman Khandual wrote:
> This defines and exports a platform specific custom vm_get_page_prot() via
> subscribing ARCH_HAS_VM_GET_PAGE_PROT. It localizes arch_vm_get_page_prot()
> as sparc_vm_get_page_prot() and moves near vm_get_page_prot().
>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Khalid Aziz <khalid.aziz@oracle.com>
> Cc: sparclinux@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
> ---
> arch/sparc/Kconfig | 1 +
> arch/sparc/include/asm/mman.h | 6 ------
> arch/sparc/mm/init_64.c | 13 +++++++++++++
> 3 files changed, 14 insertions(+), 6 deletions(-)
>
Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com>
> diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
> index 9200bc04701c..85b573643af6 100644
> --- a/arch/sparc/Kconfig
> +++ b/arch/sparc/Kconfig
> @@ -84,6 +84,7 @@ config SPARC64
> select PERF_USE_VMALLOC
> select ARCH_HAVE_NMI_SAFE_CMPXCHG
> select HAVE_C_RECORDMCOUNT
> + select ARCH_HAS_VM_GET_PAGE_PROT
> select HAVE_ARCH_AUDITSYSCALL
> select ARCH_SUPPORTS_ATOMIC_RMW
> select ARCH_SUPPORTS_DEBUG_PAGEALLOC
> diff --git a/arch/sparc/include/asm/mman.h b/arch/sparc/include/asm/mman.h
> index 274217e7ed70..af9c10c83dc5 100644
> --- a/arch/sparc/include/asm/mman.h
> +++ b/arch/sparc/include/asm/mman.h
> @@ -46,12 +46,6 @@ static inline unsigned long sparc_calc_vm_prot_bits(unsigned long prot)
> }
> }
>
> -#define arch_vm_get_page_prot(vm_flags) sparc_vm_get_page_prot(vm_flags)
> -static inline pgprot_t sparc_vm_get_page_prot(unsigned long vm_flags)
> -{
> - return (vm_flags & VM_SPARC_ADI) ? __pgprot(_PAGE_MCD_4V) : __pgprot(0);
> -}
> -
> #define arch_validate_prot(prot, addr) sparc_validate_prot(prot, addr)
> static inline int sparc_validate_prot(unsigned long prot, unsigned long addr)
> {
> diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
> index 8b1911591581..dcb17763c1f2 100644
> --- a/arch/sparc/mm/init_64.c
> +++ b/arch/sparc/mm/init_64.c
> @@ -3184,3 +3184,16 @@ void copy_highpage(struct page *to, struct page *from)
> }
> }
> EXPORT_SYMBOL(copy_highpage);
> +
> +static pgprot_t sparc_vm_get_page_prot(unsigned long vm_flags)
> +{
> + return (vm_flags & VM_SPARC_ADI) ? __pgprot(_PAGE_MCD_4V) : __pgprot(0);
> +}
> +
> +pgprot_t vm_get_page_prot(unsigned long vm_flags)
> +{
> + return __pgprot(pgprot_val(protection_map[vm_flags &
> + (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]) |
> + pgprot_val(sparc_vm_get_page_prot(vm_flags)));
> +}
> +EXPORT_SYMBOL(vm_get_page_prot);
next prev parent reply other threads:[~2022-04-07 15:22 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-07 10:32 [PATCH V4 0/7] mm/mmap: Drop arch_vm_get_page_prot() and arch_filter_pgprot() Anshuman Khandual
2022-04-07 10:32 ` [PATCH V4 1/7] mm/mmap: Add new config ARCH_HAS_VM_GET_PAGE_PROT Anshuman Khandual
2022-04-08 9:58 ` Catalin Marinas
2022-04-07 10:32 ` [PATCH V4 2/7] powerpc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT Anshuman Khandual
2022-04-08 12:53 ` Christophe Leroy
2022-04-09 11:36 ` Christophe Leroy
2022-04-11 5:31 ` Anshuman Khandual
2022-04-11 5:44 ` Christophe Leroy
2022-04-07 10:32 ` [PATCH V4 3/7] arm64/mm: " Anshuman Khandual
2022-04-08 10:28 ` Catalin Marinas
2022-04-08 11:19 ` Anshuman Khandual
2022-04-07 10:32 ` [PATCH V4 4/7] sparc/mm: " Anshuman Khandual
2022-04-07 15:22 ` Khalid Aziz [this message]
2022-04-07 10:32 ` [PATCH V4 5/7] x86/mm: " Anshuman Khandual
2022-04-07 10:32 ` [PATCH V4 6/7] mm/mmap: Drop arch_filter_pgprot() Anshuman Khandual
2022-04-08 10:28 ` Catalin Marinas
2022-04-07 10:32 ` [PATCH V4 7/7] mm/mmap: Drop arch_vm_get_page_pgprot() Anshuman Khandual
2022-04-08 10:29 ` Catalin Marinas
2022-04-07 23:20 ` [PATCH V4 0/7] mm/mmap: Drop arch_vm_get_page_prot() and arch_filter_pgprot() Andrew Morton
2022-04-08 2:41 ` Anshuman Khandual
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