linux-kernel - [RFC PATCH v2 16/21] riscv: mm: Adjust FIX_FDT_SIZE for variable PMD

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Message-Id: <20241205103729.14798-17-luxu.kernel@bytedance.com>
Date: Thu,  5 Dec 2024 18:37:24 +0800
From: Xu Lu <luxu.kernel@...edance.com>
To: paul.walmsley@...ive.com,
	palmer@...belt.com,
	aou@...s.berkeley.edu,
	ardb@...nel.org,
	anup@...infault.org,
	atishp@...shpatra.org
Cc: xieyongji@...edance.com,
	lihangjing@...edance.com,
	punit.agrawal@...edance.com,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	Xu Lu <luxu.kernel@...edance.com>
Subject: [RFC PATCH v2 16/21] riscv: mm: Adjust FIX_FDT_SIZE for variable PMD_SIZE

Signed-off-by: Xu Lu <luxu.kernel@...edance.com>
---
 arch/riscv/include/asm/pgtable.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 07d557bc8b39..5b2ca92ad833 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -108,10 +108,10 @@
 #define PCI_IO_END       VMEMMAP_START
 #define PCI_IO_START     (PCI_IO_END - PCI_IO_SIZE)
 
-#define FIXADDR_TOP      PCI_IO_START
+#define FIXADDR_TOP	 (PCI_IO_START & PMD_MASK)
 #ifdef CONFIG_64BIT
 #define MAX_FDT_SIZE	 PMD_SIZE
-#define FIX_FDT_SIZE	 (MAX_FDT_SIZE + SZ_2M)
+#define FIX_FDT_SIZE	 (MAX_FDT_SIZE + PMD_SIZE)
 #define FIXADDR_SIZE     (PMD_SIZE + FIX_FDT_SIZE)
 #else
 #define MAX_FDT_SIZE	 PGDIR_SIZE
-- 
2.20.1