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From: Xu Lu <luxu.kernel@bytedance.com>
To: paul.walmsley@sifive.com, palmer@dabbelt.com,
	aou@eecs.berkeley.edu, ardb@kernel.org, anup@brainfault.org,
	atishp@atishpatra.org
Cc: xieyongji@bytedance.com, lihangjing@bytedance.com,
	punit.agrawal@bytedance.com, linux-kernel@vger.kernel.org,
	linux-riscv@lists.infradead.org,
	Xu Lu <luxu.kernel@bytedance.com>
Subject: [RFC PATCH v2 19/21] riscv: Kconfig: Adjust mmap rnd bits for 64K Page
Date: Thu,  5 Dec 2024 18:37:27 +0800	[thread overview]
Message-ID: <20241205103729.14798-20-luxu.kernel@bytedance.com> (raw)
In-Reply-To: <20241205103729.14798-1-luxu.kernel@bytedance.com>

Signed-off-by: Xu Lu <luxu.kernel@bytedance.com>
---
 arch/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 592eb5766029..9dfe95a12890 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -253,6 +253,7 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN
 # max bits determined by the following formula:
 #  VA_BITS - PAGE_SHIFT - 3
 config ARCH_MMAP_RND_BITS_MAX
+	default 20 if 64BIT && RISCV_64K_PAGES # SV39 based
 	default 24 if 64BIT # SV39 based
 	default 17
 
-- 
2.20.1


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  parent reply	other threads:[~2024-12-05 10:45 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-12-05 10:37 [RFC PATCH v2 00/21] riscv: Introduce 64K base page Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 01/21] riscv: mm: Distinguish hardware base page and software " Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 02/21] riscv: mm: Configure satp with hw page pfn Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 03/21] riscv: mm: Reimplement page table entry structures Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 04/21] riscv: mm: Reimplement page table entry constructor function Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 05/21] riscv: mm: Reimplement conversion functions between page table entry Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 06/21] riscv: mm: Avoid pte constructor during pte conversion Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 07/21] riscv: mm: Reimplement page table entry get function Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 08/21] riscv: mm: Reimplement page table entry atomic " Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 09/21] riscv: mm: Replace READ_ONCE with atomic pte " Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 10/21] riscv: mm: Reimplement PTE A/D bit check function Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 11/21] riscv: mm: Reimplement mk_huge_pte function Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 12/21] riscv: mm: Reimplement tlb flush function Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 13/21] riscv: mm: Adjust PGDIR/P4D/PUD/PMD_SHIFT Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 14/21] riscv: mm: Only apply svnapot region bigger than software page Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 15/21] riscv: mm: Adjust FIX_BTMAPS_SLOTS for variable PAGE_SIZE Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 16/21] riscv: mm: Adjust FIX_FDT_SIZE for variable PMD_SIZE Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 17/21] riscv: mm: Apply Svnapot for base page mapping if possible Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 18/21] riscv: Kconfig: Introduce 64K page size Xu Lu
2024-12-05 10:37 ` Xu Lu [this message]
2024-12-05 10:37 ` [RFC PATCH v2 20/21] riscv: mm: Adjust address space layout and init page table for 64K Page Xu Lu
2024-12-05 10:37 ` [RFC PATCH v2 21/21] riscv: mm: Update EXEC_PAGESIZE " Xu Lu
2024-12-06  2:00 ` [RFC PATCH v2 00/21] riscv: Introduce 64K base page Zi Yan
2024-12-06  2:41   ` [External] " Xu Lu
2024-12-06 10:13   ` David Hildenbrand
2024-12-06 13:42     ` [External] " Xu Lu
2024-12-06 18:48       ` Pedro Falcato
2024-12-07  8:03         ` Xu Lu
2024-12-07 22:02           ` Yu Zhao
2024-12-09  3:36             ` Xu Lu

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