From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH V2 26/68] powerpc/mm/radix: Add radix pte defines
Date: Sat, 9 Apr 2016 11:43:22 +0530 [thread overview]
Message-ID: <1460182444-2468-27-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1460182444-2468-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
This add PowerISA 3.0 specific pte defines. We share most of the
details with hash linux page table format. This patch indicate only
things where we differ
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 1 +
arch/powerpc/include/asm/book3s/64/radix-4k.h | 12 +++
arch/powerpc/include/asm/book3s/64/radix-64k.h | 12 +++
arch/powerpc/include/asm/book3s/64/radix.h | 128 +++++++++++++++++++++++++
4 files changed, 153 insertions(+)
create mode 100644 arch/powerpc/include/asm/book3s/64/radix-4k.h
create mode 100644 arch/powerpc/include/asm/book3s/64/radix-64k.h
create mode 100644 arch/powerpc/include/asm/book3s/64/radix.h
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 2643487affac..c47c3f7fc4e0 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -205,6 +205,7 @@ extern unsigned long __pgd_table_size;
#endif /* __ASSEMBLY__ */
#include <asm/book3s/64/hash.h>
+#include <asm/book3s/64/radix.h>
#include <asm/barrier.h>
/*
diff --git a/arch/powerpc/include/asm/book3s/64/radix-4k.h b/arch/powerpc/include/asm/book3s/64/radix-4k.h
new file mode 100644
index 000000000000..1966ee977206
--- /dev/null
+++ b/arch/powerpc/include/asm/book3s/64/radix-4k.h
@@ -0,0 +1,12 @@
+#ifndef _ASM_POWERPC_PGTABLE_RADIX_4K_H
+#define _ASM_POWERPC_PGTABLE_RADIX_4K_H
+
+/*
+ * For 4K page size supported index is 13/9/9/9
+ */
+#define R_PTE_INDEX_SIZE 9 /* 2MB huge page */
+#define R_PMD_INDEX_SIZE 9 /* 1G huge page */
+#define R_PUD_INDEX_SIZE 9
+#define R_PGD_INDEX_SIZE 13
+
+#endif /* _ASM_POWERPC_PGTABLE_RADIX_4K_H */
diff --git a/arch/powerpc/include/asm/book3s/64/radix-64k.h b/arch/powerpc/include/asm/book3s/64/radix-64k.h
new file mode 100644
index 000000000000..fe1cebe55e01
--- /dev/null
+++ b/arch/powerpc/include/asm/book3s/64/radix-64k.h
@@ -0,0 +1,12 @@
+#ifndef _ASM_POWERPC_PGTABLE_RADIX_64K_H
+#define _ASM_POWERPC_PGTABLE_RADIX_64K_H
+
+/*
+ * For 64K page size supported index is 13/9/9/5
+ */
+#define R_PTE_INDEX_SIZE 5 /* 2MB huge page */
+#define R_PMD_INDEX_SIZE 9 /* 1G huge page */
+#define R_PUD_INDEX_SIZE 9
+#define R_PGD_INDEX_SIZE 13
+
+#endif /* _ASM_POWERPC_PGTABLE_RADIX_64K_H */
diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h
new file mode 100644
index 000000000000..72e18d5c96b4
--- /dev/null
+++ b/arch/powerpc/include/asm/book3s/64/radix.h
@@ -0,0 +1,128 @@
+#ifndef _ASM_POWERPC_PGTABLE_RADIX_H
+#define _ASM_POWERPC_PGTABLE_RADIX_H
+
+#ifndef __ASSEMBLY__
+#include <asm/cmpxchg.h>
+#endif
+
+#ifdef CONFIG_PPC_64K_PAGES
+#include <asm/book3s/64/radix-64k.h>
+#else
+#include <asm/book3s/64/radix-4k.h>
+#endif
+
+/* An empty PTE can still have a R or C writeback */
+#define R_PTE_NONE_MASK (_PAGE_DIRTY | _PAGE_ACCESSED)
+
+/* Bits to set in a RPMD/RPUD/RPGD */
+#define R_PMD_VAL_BITS (0x8000000000000000UL | R_PTE_INDEX_SIZE)
+#define R_PUD_VAL_BITS (0x8000000000000000UL | R_PMD_INDEX_SIZE)
+#define R_PGD_VAL_BITS (0x8000000000000000UL | R_PUD_INDEX_SIZE)
+
+/* Don't have anything in the reserved bits and leaf bits */
+#define R_PMD_BAD_BITS 0x60000000000000e0UL
+#define R_PUD_BAD_BITS 0x60000000000000e0UL
+#define R_PGD_BAD_BITS 0x60000000000000e0UL
+
+/*
+ * Size of EA range mapped by our pagetables.
+ */
+#define R_PGTABLE_EADDR_SIZE (R_PTE_INDEX_SIZE + R_PMD_INDEX_SIZE + \
+ R_PUD_INDEX_SIZE + R_PGD_INDEX_SIZE + PAGE_SHIFT)
+#define R_PGTABLE_RANGE (ASM_CONST(1) << R_PGTABLE_EADDR_SIZE)
+
+#ifndef __ASSEMBLY__
+#define R_PTE_TABLE_SIZE (sizeof(pte_t) << R_PTE_INDEX_SIZE)
+#define R_PMD_TABLE_SIZE (sizeof(pmd_t) << R_PMD_INDEX_SIZE)
+#define R_PUD_TABLE_SIZE (sizeof(pud_t) << R_PUD_INDEX_SIZE)
+#define R_PGD_TABLE_SIZE (sizeof(pgd_t) << R_PGD_INDEX_SIZE)
+
+static inline unsigned long rpte_update(struct mm_struct *mm,
+ unsigned long addr,
+ pte_t *ptep, unsigned long clr,
+ unsigned long set,
+ int huge)
+{
+
+ pte_t pte;
+ unsigned long old_pte, new_pte;
+
+ do {
+ pte = READ_ONCE(*ptep);
+ old_pte = pte_val(pte);
+ new_pte = (old_pte | set) & ~clr;
+
+ } while (cpu_to_be64(old_pte) != __cmpxchg_u64((unsigned long *)ptep,
+ cpu_to_be64(old_pte),
+ cpu_to_be64(new_pte)));
+ /* We already do a sync in cmpxchg, is ptesync needed ?*/
+ asm volatile("ptesync" : : : "memory");
+ /* huge pages use the old page table lock */
+ if (!huge)
+ assert_pte_locked(mm, addr);
+
+ return old_pte;
+}
+
+/*
+ * Set the dirty and/or accessed bits atomically in a linux PTE, this
+ * function doesn't need to invalidate tlb.
+ */
+static inline void __rptep_set_access_flags(pte_t *ptep, pte_t entry)
+{
+ pte_t pte;
+ unsigned long old_pte, new_pte;
+ unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED |
+ _PAGE_RW | _PAGE_EXEC);
+ do {
+ pte = READ_ONCE(*ptep);
+ old_pte = pte_val(pte);
+ new_pte = old_pte | set;
+
+ } while (cpu_to_be64(old_pte) != __cmpxchg_u64((unsigned long *)ptep,
+ cpu_to_be64(old_pte),
+ cpu_to_be64(new_pte)));
+ /* We already do a sync in cmpxchg, is ptesync needed ?*/
+ asm volatile("ptesync" : : : "memory");
+}
+
+static inline int rpte_same(pte_t pte_a, pte_t pte_b)
+{
+ return ((pte_val(pte_a) == pte_val(pte_b)));
+}
+
+static inline int rpte_none(pte_t pte)
+{
+ return (pte_val(pte) & ~R_PTE_NONE_MASK) == 0;
+}
+
+static inline void __set_rpte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte, int percpu)
+{
+ *ptep = pte;
+ asm volatile("ptesync" : : : "memory");
+}
+
+static inline int rpmd_bad(pmd_t pmd)
+{
+ return !!(pmd_val(pmd) & R_PMD_BAD_BITS);
+}
+
+static inline int rpmd_same(pmd_t pmd_a, pmd_t pmd_b)
+{
+ return ((pmd_val(pmd_a) == pmd_val(pmd_b)));
+}
+
+static inline int rpud_bad(pud_t pud)
+{
+ return !!(pud_val(pud) & R_PUD_BAD_BITS);
+}
+
+
+static inline int rpgd_bad(pgd_t pgd)
+{
+ return !!(pgd_val(pgd) & R_PGD_BAD_BITS);
+}
+
+#endif /* __ASSEMBLY__ */
+#endif
--
2.5.0
next prev parent reply other threads:[~2016-04-09 6:15 UTC|newest]
Thread overview: 139+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-09 6:12 [PATCH V2 00/68] PowerISA 3.0 Radix page table support Aneesh Kumar K.V
2016-04-09 6:12 ` [PATCH V2 01/68] powerpc/cxl: Use REGION_ID instead of opencoding Aneesh Kumar K.V
2016-04-11 0:37 ` Andrew Donnellan
2016-04-13 2:42 ` Aneesh Kumar K.V
2016-04-20 3:03 ` Michael Ellerman
2016-04-20 7:53 ` Aneesh Kumar K.V
2016-04-09 6:12 ` [PATCH V2 02/68] powerpc/mm/nohash: Return correctly from flush_tlb_page Aneesh Kumar K.V
2016-04-20 4:08 ` [V2, " Michael Ellerman
2016-04-20 7:49 ` Aneesh Kumar K.V
2016-04-09 6:12 ` [PATCH V2 03/68] powerpc/mm/nohash: Update non SMP version of flush_tlb_page to handle hugetlb address Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 04/68] powerpc/mm: Use big endian page table for book3s 64 Aneesh Kumar K.V
2016-04-22 11:01 ` Michael Ellerman
2016-04-24 22:29 ` Aneesh Kumar K.V
2016-05-29 11:03 ` Anton Blanchard
2016-05-29 21:27 ` Benjamin Herrenschmidt
2016-05-29 23:08 ` Anton Blanchard
2016-05-30 3:42 ` Michael Ellerman
2016-05-30 5:31 ` Anton Blanchard
2016-05-30 8:42 ` Aneesh Kumar K.V
2016-05-30 11:00 ` Benjamin Herrenschmidt
2016-05-30 14:48 ` Aneesh Kumar K.V
2016-05-30 14:59 ` Segher Boessenkool
2016-04-09 6:13 ` [PATCH V2 05/68] powerpc/mm: use _PAGE_READ to indicate Read access Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 06/68] powerpc/mm/subpage: Clear RWX bit to indicate no access Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 07/68] powerpc/mm: Use pte_user instead of opencoding Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 08/68] powerpc/mm: Replace _PAGE_USER with _PAGE_PRIVILEGED Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 09/68] powerpc/mm: Remove RPN_SHIFT and RPN_SIZE Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 10/68] powerpc/mm: Update _PAGE_KERNEL_RO Aneesh Kumar K.V
2016-11-20 0:43 ` [V2,10/68] " Geoff Levand
2016-11-20 18:03 ` Aneesh Kumar K.V
2016-11-21 0:33 ` Geoff Levand
2016-11-23 10:41 ` Aneesh Kumar K.V
2016-11-24 4:04 ` Geoff Levand
2016-04-09 6:13 ` [PATCH V2 11/68] powerpc/mm: Use helper for finding pte bits mapping I/O area Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 12/68] powerpc/mm: Drop WIMG in favour of new constants Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 13/68] powerpc/mm: Use generic version of pmdp_clear_flush_young Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 14/68] powerpc/mm: Use generic version of ptep_clear_flush_young Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 15/68] powerpc/mm: Move common data structure between radix and hash to book3s 64 generic headers Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 16/68] powerpc/mm/power9: Add partition table format Aneesh Kumar K.V
2016-04-11 0:59 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 17/68] powerpc/mm/hash: Add support for POWER9 hash Aneesh Kumar K.V
2016-04-11 4:55 ` Balbir Singh
2016-04-16 19:06 ` Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 18/68] powerpc/mm: Move hash and no hash code to separate files Aneesh Kumar K.V
2016-04-11 5:14 ` Balbir Singh
2016-04-17 10:20 ` Aneesh Kumar K.V
2016-04-20 6:17 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 19/68] powerpc/mm/book3s: Rename hash specific PTE bits to carry H_ prefix Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 20/68] powerpc/mm: Handle _PTE_NONE_MASK Aneesh Kumar K.V
2016-04-11 6:09 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 21/68] powerpc/mm: Move common pte bits and accessors to book3s/64/pgtable.h Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 22/68] powerpc/mm: Move pte accessors that operate on common pte bits to pgtable.h Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 23/68] powerpc/mm: Make page table size a variable Aneesh Kumar K.V
2016-04-12 1:49 ` Balbir Singh
2016-04-17 10:27 ` Aneesh Kumar K.V
2016-04-20 6:21 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 24/68] powerpc/mm: Move page table index and and vaddr to pgtable.h Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 25/68] powerpc/mm: Move pte related function together Aneesh Kumar K.V
2016-04-14 6:50 ` Balbir Singh
2016-04-09 6:13 ` Aneesh Kumar K.V [this message]
2016-04-21 4:12 ` [PATCH V2 26/68] powerpc/mm/radix: Add radix pte defines Balbir Singh
2016-04-23 8:30 ` Benjamin Herrenschmidt
2016-04-26 1:40 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 27/68] powerpc/mm/radix: Dummy radix_enabled() Aneesh Kumar K.V
2016-04-21 4:27 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 28/68] powerpc/mm: Add radix callbacks to pte accessors Aneesh Kumar K.V
2016-04-21 4:30 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 29/68] powerpc/mm: Move hugetlb and THP related pmd accessors to pgtable.h Aneesh Kumar K.V
2016-04-21 9:53 ` Balbir Singh
2016-04-21 9:59 ` Michael Ellerman
2016-04-21 11:42 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 30/68] powerpc/mm/radix: Add radix callback for pmd accessors Aneesh Kumar K.V
2016-04-21 11:39 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 31/68] powerpc/mm: Abstraction for early init routines Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 32/68] powerpc/mm/radix: Add radix callback " Aneesh Kumar K.V
2016-04-21 12:22 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 33/68] powerpc/mm: Abstraction for vmemmap and map_kernel_page Aneesh Kumar K.V
2016-04-21 12:59 ` Balbir Singh
2016-04-28 6:17 ` Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 34/68] powerpc/mm/radix: Add radix callback for vmemmap and map_kernel page Aneesh Kumar K.V
2016-04-21 13:46 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 35/68] powerpc/mm: Abstraction for switch_mmu_context Aneesh Kumar K.V
2016-04-21 14:12 ` Balbir Singh
2016-04-28 6:13 ` Aneesh Kumar K.V
2016-04-28 6:13 ` Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 36/68] powerpc/mm/radix: Add mmu context handling callback for radix Aneesh Kumar K.V
2016-04-22 6:19 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 37/68] powerpc/mm: Rename mmu_context_hash64.c to mmu_context_book3s64.c Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 38/68] powerpc/mm: Hash linux abstraction for tlbflush routines Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 39/68] powerpc/mm/radix: Add " Aneesh Kumar K.V
2016-04-22 7:20 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 40/68] powerpc/mm/radix: Add MMU_FTR_RADIX Aneesh Kumar K.V
2016-04-22 7:23 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 41/68] powerpc/mm/radix: Use STD_MMU_64 to properly isolate hash related code Aneesh Kumar K.V
2016-04-22 7:32 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 42/68] powerpc/mm/radix: Isolate hash table function from pseries guest code Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 43/68] powerpc/mm/radix: Add checks in slice code to catch radix usage Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 44/68] powerpc/mm/radix: Limit paca allocation in radix Aneesh Kumar K.V
2016-04-22 8:07 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 45/68] powerpc/mm/radix: Pick the address layout for radix config Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 46/68] powerpc/mm/radix: Update secondary PTCR Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 47/68] powerpc/mm: Make a copy of pgalloc.h for 32 and 64 book3s Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 48/68] powerpc/mm: Copy pgalloc (part 2) Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 49/68] powerpc/mm: Revert changes made to nohash pgalloc-64.h Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 50/68] powerpc/mm: Simplify the code dropping 4 level table #ifdef Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 51/68] powerpc/mm: Rename function to indicate we are allocating fragments Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 52/68] powerpc/mm: make 4k and 64k use pte_t for pgtable_t Aneesh Kumar K.V
2016-04-26 2:58 ` Balbir Singh
2016-04-28 6:03 ` Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 53/68] powerpc/mm: Add radix pgalloc details Aneesh Kumar K.V
2016-04-26 3:05 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 54/68] powerpc/mm: Update pte filter for radix Aneesh Kumar K.V
2016-04-26 3:06 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 55/68] powerpc/mm: VMALLOC abstraction Aneesh Kumar K.V
2016-04-22 6:52 ` Michael Neuling
2016-04-23 3:29 ` Aneesh Kumar K.V
2016-04-26 6:20 ` Balbir Singh
2016-04-26 4:47 ` Balbir Singh
2016-04-28 6:09 ` Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 56/68] powerpc/radix: update mmu cache Aneesh Kumar K.V
2016-04-26 6:23 ` Balbir Singh
2016-04-09 6:13 ` [PATCH V2 57/68] powerpc/mm: pte_frag abstraction Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 58/68] powerpc/mm: Fix vma_mmu_pagesize for radix Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 59/68] powerpc/mm: Add radix support for hugetlb Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 60/68] powerpc/mm/radix: Make sure swapper pgdir is properly aligned Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 61/68] powerpc/mm/radix: Add hugetlb support 4K page size Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 62/68] powerpc/mm: Drop PTE_ATOMIC_UPDATES from pmd_hugepage_update Aneesh Kumar K.V
2016-04-09 6:13 ` [PATCH V2 63/68] powerpc/mm: THP is only available on hash64 as of now Aneesh Kumar K.V
2016-04-09 6:14 ` [PATCH V2 64/68] powerpc/mm/thp: Abstraction for THP functions Aneesh Kumar K.V
2016-04-09 6:14 ` [PATCH V2 65/68] powerpc/mm/radix: Add radix THP callbacks Aneesh Kumar K.V
2016-04-09 6:14 ` [PATCH V2 66/68] powerpc/mm/radix: Add THP support for 4k linux page size Aneesh Kumar K.V
2016-04-28 4:56 ` [V2, " Michael Ellerman
2016-04-28 6:28 ` Aneesh Kumar K.V
2016-04-09 6:14 ` [PATCH V2 67/68] powerpc/mm/radix: Cputable update for radix Aneesh Kumar K.V
2016-04-28 14:10 ` [V2,67/68] " Michael Ellerman
2016-04-09 6:14 ` [PATCH V2 68/68] powerpc/mm/radix: Use firmware feature to disable radix Aneesh Kumar K.V
2016-04-20 2:59 ` [V2, " Michael Ellerman
2016-04-20 8:21 ` Aneesh Kumar K.V
2016-04-20 11:25 ` Michael Neuling
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