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From: Atish Patra <atish.patra@wdc.com>
To: linux-kernel@vger.kernel.org
Cc: Greentime Hu <greentime.hu@sifive.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	Anup Patel <anup@brainfault.org>, Arnd Bergmann <arnd@arndb.de>,
	Atish Patra <atish.patra@wdc.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	David Hildenbrand <david@redhat.com>,
	Bjorn Helgaas <helgaas@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jia He <justin.he@arm.com>,
	linux-arch@vger.kernel.org, linux-riscv@lists.infradead.org,
	Mike Rapoport <rppt@kernel.org>,
	Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Steven Price <steven.price@arm.com>,
	Will Deacon <will@kernel.org>, Zong Li <zong.li@sifive.com>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>
Subject: [RFC/RFT PATCH v2 4/5] riscv: Add support pte_protnone and pmd_protnone if CONFIG_NUMA_BALANCING
Date: Fri, 11 Sep 2020 18:34:40 -0700	[thread overview]
Message-ID: <20200912013441.9730-5-atish.patra@wdc.com> (raw)
In-Reply-To: <20200912013441.9730-1-atish.patra@wdc.com>

From: Greentime Hu <greentime.hu@sifive.com>

These two functions are used to distinguish between PROT_NONENUMA
protections and hinting fault protections.

Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
---
 arch/riscv/include/asm/pgtable.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 515b42f98d34..2751110675e6 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -183,6 +183,11 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
 	return (unsigned long)pfn_to_virt(pmd_val(pmd) >> _PAGE_PFN_SHIFT);
 }
 
+static inline pte_t pmd_pte(pmd_t pmd)
+{
+	return __pte(pmd_val(pmd));
+}
+
 /* Yields the page frame number (PFN) of a page table entry */
 static inline unsigned long pte_pfn(pte_t pte)
 {
@@ -286,6 +291,21 @@ static inline pte_t pte_mkhuge(pte_t pte)
 	return pte;
 }
 
+#ifdef CONFIG_NUMA_BALANCING
+/*
+ * See the comment in include/asm-generic/pgtable.h
+ */
+static inline int pte_protnone(pte_t pte)
+{
+	return (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROT_NONE)) == _PAGE_PROT_NONE;
+}
+
+static inline int pmd_protnone(pmd_t pmd)
+{
+	return pte_protnone(pmd_pte(pmd));
+}
+#endif
+
 /* Modify page protection bits */
 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 {
-- 
2.24.0


WARNING: multiple messages have this Message-ID (diff)
From: Atish Patra <atish.patra@wdc.com>
To: linux-kernel@vger.kernel.org
Cc: David Hildenbrand <david@redhat.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>,
	Atish Patra <atish.patra@wdc.com>, Zong Li <zong.li@sifive.com>,
	linux-riscv@lists.infradead.org, Will Deacon <will@kernel.org>,
	linux-arch@vger.kernel.org, Jia He <justin.he@arm.com>,
	Anup Patel <anup@brainfault.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Steven Price <steven.price@arm.com>,
	Bjorn Helgaas <helgaas@kernel.org>,
	Greentime Hu <greentime.hu@sifive.com>,
	Albert Ou <aou@eecs.berkeley.edu>, Arnd Bergmann <arnd@arndb.de>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Mike Rapoport <rppt@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Subject: [RFC/RFT PATCH v2 4/5] riscv: Add support pte_protnone and pmd_protnone if CONFIG_NUMA_BALANCING
Date: Fri, 11 Sep 2020 18:34:40 -0700	[thread overview]
Message-ID: <20200912013441.9730-5-atish.patra@wdc.com> (raw)
In-Reply-To: <20200912013441.9730-1-atish.patra@wdc.com>

From: Greentime Hu <greentime.hu@sifive.com>

These two functions are used to distinguish between PROT_NONENUMA
protections and hinting fault protections.

Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
---
 arch/riscv/include/asm/pgtable.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 515b42f98d34..2751110675e6 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -183,6 +183,11 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
 	return (unsigned long)pfn_to_virt(pmd_val(pmd) >> _PAGE_PFN_SHIFT);
 }
 
+static inline pte_t pmd_pte(pmd_t pmd)
+{
+	return __pte(pmd_val(pmd));
+}
+
 /* Yields the page frame number (PFN) of a page table entry */
 static inline unsigned long pte_pfn(pte_t pte)
 {
@@ -286,6 +291,21 @@ static inline pte_t pte_mkhuge(pte_t pte)
 	return pte;
 }
 
+#ifdef CONFIG_NUMA_BALANCING
+/*
+ * See the comment in include/asm-generic/pgtable.h
+ */
+static inline int pte_protnone(pte_t pte)
+{
+	return (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROT_NONE)) == _PAGE_PROT_NONE;
+}
+
+static inline int pmd_protnone(pmd_t pmd)
+{
+	return pte_protnone(pmd_pte(pmd));
+}
+#endif
+
 /* Modify page protection bits */
 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 {
-- 
2.24.0


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  parent reply	other threads:[~2020-09-12  1:36 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-12  1:34 [RFC/RFT PATCH v2 0/5] Unify NUMA implementation between ARM64 & RISC-V Atish Patra
2020-09-12  1:34 ` Atish Patra
2020-09-12  1:34 ` [RFC/RFT PATCH v2 1/5] numa: Move numa implementation to common code Atish Patra
2020-09-12  1:34   ` Atish Patra
2020-09-14 14:21   ` Jonathan Cameron
2020-09-14 14:21     ` Jonathan Cameron
2020-09-12  1:34 ` [RFC/RFT PATCH v2 2/5] arm64, numa: Change the numa init function name to be generic Atish Patra
2020-09-12  1:34   ` Atish Patra
2020-09-14 14:30   ` Jonathan Cameron
2020-09-14 14:30     ` Jonathan Cameron
2020-09-14 19:32     ` Atish Patra
2020-09-14 19:32       ` Atish Patra
2020-09-15  8:27       ` Jonathan Cameron
2020-09-15  8:27         ` Jonathan Cameron
2020-09-15  4:11   ` kernel test robot
2020-09-12  1:34 ` [RFC/RFT PATCH v2 3/5] riscv: Separate memory init from paging init Atish Patra
2020-09-12  1:34   ` Atish Patra
2020-09-12  2:10   ` Greentime Hu
2020-09-12  2:10     ` Greentime Hu
2020-09-12  1:34 ` Atish Patra [this message]
2020-09-12  1:34   ` [RFC/RFT PATCH v2 4/5] riscv: Add support pte_protnone and pmd_protnone if CONFIG_NUMA_BALANCING Atish Patra
2020-09-12  1:34 ` [RFC/RFT PATCH v2 5/5] riscv: Add numa support for riscv64 platform Atish Patra
2020-09-12  1:34   ` Atish Patra
2020-09-16 22:19   ` kernel test robot
2020-09-14  8:04 ` [RFC/RFT PATCH v2 0/5] Unify NUMA implementation between ARM64 & RISC-V Jonathan Cameron
2020-09-14  8:04   ` Jonathan Cameron
2020-09-14 19:33   ` Atish Patra
2020-09-14 19:33     ` Atish Patra
2020-09-18 16:05     ` Jonathan Cameron
2020-09-18 16:05       ` Jonathan Cameron
2020-09-18 19:18       ` Atish Patra
2020-09-18 19:18         ` Atish Patra

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