From: Steven Price <steven.price@arm.com>
To: linux-mm@kvack.org
Cc: "Steven Price" <steven.price@arm.com>,
"Andy Lutomirski" <luto@kernel.org>,
"Ard Biesheuvel" <ard.biesheuvel@linaro.org>,
"Arnd Bergmann" <arnd@arndb.de>, "Borislav Petkov" <bp@alien8.de>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Ingo Molnar" <mingo@redhat.com>,
"James Morse" <james.morse@arm.com>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Will Deacon" <will@kernel.org>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
"Mark Rutland" <Mark.Rutland@arm.com>,
"Liang, Kan" <kan.liang@linux.intel.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Vineet Gupta" <vgupta@synopsys.com>,
linux-snps-arc@lists.infradead.org
Subject: [PATCH v13 02/22] arc: mm: Add p?d_leaf() definitions
Date: Thu, 24 Oct 2019 10:36:56 +0100 [thread overview]
Message-ID: <20191024093716.49420-3-steven.price@arm.com> (raw)
In-Reply-To: <20191024093716.49420-1-steven.price@arm.com>
walk_page_range() is going to be allowed to walk page tables other than
those of user space. For this it needs to know when it has reached a
'leaf' entry in the page tables. This information will be provided by the
p?d_leaf() functions/macros.
For arc, we only have two levels, so only pmd_leaf() is needed.
CC: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc@lists.infradead.org
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Steven Price <steven.price@arm.com>
---
arch/arc/include/asm/pgtable.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 7addd0301c51..5ec798e50836 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -274,6 +274,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
#define pmd_none(x) (!pmd_val(x))
#define pmd_bad(x) ((pmd_val(x) & ~PAGE_MASK))
#define pmd_present(x) (pmd_val(x))
+#define pmd_leaf(x) (pmd_val(pmd) & _PAGE_HW_SZ)
#define pmd_clear(xp) do { pmd_val(*(xp)) = 0; } while (0)
#define pte_page(pte) pfn_to_page(pte_pfn(pte))
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Steven Price <steven.price@arm.com>
To: linux-mm@kvack.org
Cc: "Mark Rutland" <Mark.Rutland@arm.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, "Will Deacon" <will@kernel.org>,
"Liang, Kan" <kan.liang@linux.intel.com>,
x86@kernel.org, "Steven Price" <steven.price@arm.com>,
"Ingo Molnar" <mingo@redhat.com>,
linux-snps-arc@lists.infradead.org,
"Arnd Bergmann" <arnd@arndb.de>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Andy Lutomirski" <luto@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
"Ard Biesheuvel" <ard.biesheuvel@linaro.org>,
"Vineet Gupta" <vgupta@synopsys.com>,
linux-kernel@vger.kernel.org, "James Morse" <james.morse@arm.com>,
"Andrew Morton" <akpm@linux-foundation.org>
Subject: [PATCH v13 02/22] arc: mm: Add p?d_leaf() definitions
Date: Thu, 24 Oct 2019 10:36:56 +0100 [thread overview]
Message-ID: <20191024093716.49420-3-steven.price@arm.com> (raw)
In-Reply-To: <20191024093716.49420-1-steven.price@arm.com>
walk_page_range() is going to be allowed to walk page tables other than
those of user space. For this it needs to know when it has reached a
'leaf' entry in the page tables. This information will be provided by the
p?d_leaf() functions/macros.
For arc, we only have two levels, so only pmd_leaf() is needed.
CC: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc@lists.infradead.org
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Steven Price <steven.price@arm.com>
---
arch/arc/include/asm/pgtable.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 7addd0301c51..5ec798e50836 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -274,6 +274,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
#define pmd_none(x) (!pmd_val(x))
#define pmd_bad(x) ((pmd_val(x) & ~PAGE_MASK))
#define pmd_present(x) (pmd_val(x))
+#define pmd_leaf(x) (pmd_val(pmd) & _PAGE_HW_SZ)
#define pmd_clear(xp) do { pmd_val(*(xp)) = 0; } while (0)
#define pte_page(pte) pfn_to_page(pte_pfn(pte))
--
2.20.1
_______________________________________________
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
WARNING: multiple messages have this Message-ID (diff)
From: Steven Price <steven.price@arm.com>
To: linux-mm@kvack.org
Cc: "Mark Rutland" <Mark.Rutland@arm.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, "Will Deacon" <will@kernel.org>,
"Liang, Kan" <kan.liang@linux.intel.com>,
x86@kernel.org, "Steven Price" <steven.price@arm.com>,
"Ingo Molnar" <mingo@redhat.com>,
linux-snps-arc@lists.infradead.org,
"Arnd Bergmann" <arnd@arndb.de>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Andy Lutomirski" <luto@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
"Ard Biesheuvel" <ard.biesheuvel@linaro.org>,
"Vineet Gupta" <vgupta@synopsys.com>,
linux-kernel@vger.kernel.org, "James Morse" <james.morse@arm.com>,
"Andrew Morton" <akpm@linux-foundation.org>
Subject: [PATCH v13 02/22] arc: mm: Add p?d_leaf() definitions
Date: Thu, 24 Oct 2019 10:36:56 +0100 [thread overview]
Message-ID: <20191024093716.49420-3-steven.price@arm.com> (raw)
In-Reply-To: <20191024093716.49420-1-steven.price@arm.com>
walk_page_range() is going to be allowed to walk page tables other than
those of user space. For this it needs to know when it has reached a
'leaf' entry in the page tables. This information will be provided by the
p?d_leaf() functions/macros.
For arc, we only have two levels, so only pmd_leaf() is needed.
CC: Vineet Gupta <vgupta@synopsys.com>
CC: linux-snps-arc@lists.infradead.org
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Steven Price <steven.price@arm.com>
---
arch/arc/include/asm/pgtable.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 7addd0301c51..5ec798e50836 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -274,6 +274,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
#define pmd_none(x) (!pmd_val(x))
#define pmd_bad(x) ((pmd_val(x) & ~PAGE_MASK))
#define pmd_present(x) (pmd_val(x))
+#define pmd_leaf(x) (pmd_val(pmd) & _PAGE_HW_SZ)
#define pmd_clear(xp) do { pmd_val(*(xp)) = 0; } while (0)
#define pte_page(pte) pfn_to_page(pte_pfn(pte))
--
2.20.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-10-24 9:37 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 9:36 [PATCH v13 00/22] Generic page walk and ptdump Steven Price
2019-10-24 9:36 ` Steven Price
2019-10-24 9:36 ` [PATCH v13 01/22] mm: Add generic p?d_leaf() macros Steven Price
2019-10-24 9:36 ` Steven Price
2019-10-24 9:36 ` Steven Price [this message]
2019-10-24 9:36 ` [PATCH v13 02/22] arc: mm: Add p?d_leaf() definitions Steven Price
2019-10-24 9:36 ` Steven Price
2019-10-24 9:36 ` [PATCH v13 03/22] arm: " Steven Price
2019-10-24 9:36 ` Steven Price
2019-10-24 9:36 ` [PATCH v13 04/22] arm64: " Steven Price
2019-10-24 9:36 ` Steven Price
2019-10-24 9:36 ` [PATCH v13 05/22] mips: " Steven Price
2019-10-24 9:36 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 06/22] powerpc: " Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 07/22] riscv: " Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 13:09 ` Zong Li
2019-10-24 13:09 ` Zong Li
2019-10-24 13:09 ` Zong Li
2019-10-24 9:37 ` [PATCH v13 08/22] s390: " Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 09/22] sparc: " Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 16:46 ` David Miller
2019-10-24 16:46 ` David Miller
2019-10-24 16:46 ` David Miller
2019-10-24 9:37 ` [PATCH v13 10/22] x86: " Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 11/22] mm: pagewalk: Add p4d_entry() and pgd_entry() Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 12/22] mm: pagewalk: Allow walking without vma Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-27 7:59 ` kbuild test robot
2019-10-27 7:59 ` kbuild test robot
2019-10-27 7:59 ` kbuild test robot
2019-10-28 10:46 ` Steven Price
2019-10-28 10:46 ` Steven Price
2019-10-28 10:46 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 13/22] mm: pagewalk: Add test_p?d callbacks Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 14/22] mm: pagewalk: Add 'depth' parameter to pte_hole Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 15/22] x86: mm: Point to struct seq_file from struct pg_state Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 16/22] x86: mm+efi: Convert ptdump_walk_pgd_level() to take a mm_struct Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 17/22] x86: mm: Convert ptdump_walk_pgd_level_debugfs() to take an mm_struct Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 18/22] x86: mm: Convert ptdump_walk_pgd_level_core() " Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 19/22] mm: Add generic ptdump Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 20/22] x86: mm: Convert dump_pagetables to use walk_page_range Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 21/22] arm64: mm: Convert mm/dump.c to use walk_page_range() Steven Price
2019-10-24 9:37 ` Steven Price
2019-10-24 9:37 ` [PATCH v13 22/22] arm64: mm: Display non-present entries in ptdump Steven Price
2019-10-24 9:37 ` Steven Price
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191024093716.49420-3-steven.price@arm.com \
--to=steven.price@arm.com \
--cc=Mark.Rutland@arm.com \
--cc=akpm@linux-foundation.org \
--cc=ard.biesheuvel@linaro.org \
--cc=arnd@arndb.de \
--cc=bp@alien8.de \
--cc=catalin.marinas@arm.com \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=james.morse@arm.com \
--cc=jglisse@redhat.com \
--cc=kan.liang@linux.intel.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-snps-arc@lists.infradead.org \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=vgupta@synopsys.com \
--cc=will@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.