linux-kernel - [PATCH 3/6] scripts/gdb: change the layout of vmemmap

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Date: Wed, 19 Jun 2024 15:49:08 +0800
From: Kuan-Ying Lee <kuan-ying.lee@...onical.com>
To: kuan-ying.lee@...onical.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	Kieran Bingham <kbingham@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Ard Biesheuvel <ardb@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>
Cc: linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/6] scripts/gdb: change the layout of vmemmap

We need to change the layout of vmemmap in gdb scripts after
commit 32697ff38287 ("arm64: vmemmap: Avoid base2 order of
struct page size to dimension region") changed it.

Fixes: 32697ff38287 ("arm64: vmemmap: Avoid base2 order of struct page size to dimension region")
Signed-off-by: Kuan-Ying Lee <kuan-ying.lee@...onical.com>
---
 scripts/gdb/linux/mm.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/scripts/gdb/linux/mm.py b/scripts/gdb/linux/mm.py
index e0461248abe2..f8b9be3f43e8 100644
--- a/scripts/gdb/linux/mm.py
+++ b/scripts/gdb/linux/mm.py
@@ -89,10 +89,10 @@ class aarch64_page_ops():
         self.MODULES_VADDR = self._PAGE_END(self.VA_BITS_MIN)
         self.MODULES_END = self.MODULES_VADDR + self.MODULES_VSIZE
 
-        self.VMEMMAP_SHIFT = (self.PAGE_SHIFT - self.STRUCT_PAGE_MAX_SHIFT)
-        self.VMEMMAP_SIZE = ((self._PAGE_END(self.VA_BITS_MIN) - self.PAGE_OFFSET) >> self.VMEMMAP_SHIFT)
-        self.VMEMMAP_START = (-(1 << (self.VA_BITS - self.VMEMMAP_SHIFT))) & 0xffffffffffffffff
-        self.VMEMMAP_END = self.VMEMMAP_START + self.VMEMMAP_SIZE
+        self.VMEMMAP_RANGE = self._PAGE_END(self.VA_BITS_MIN) - self.PAGE_OFFSET
+        self.VMEMMAP_SIZE = (self.VMEMMAP_RANGE >> self.PAGE_SHIFT) * self.struct_page_size
+        self.VMEMMAP_END = (-(1 * 1024 * 1024 * 1024)) & 0xffffffffffffffff
+        self.VMEMMAP_START = self.VMEMMAP_END - self.VMEMMAP_SIZE
 
         self.VMALLOC_START = self.MODULES_END
         self.VMALLOC_END = self.VMEMMAP_START - 256 * 1024 * 1024
-- 
2.34.1