linux-kernel - [PATCH v4 22/26] mm: numa_memblks: use memblock_{start,end}_of

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Message-ID: <20240807064110.1003856-23-rppt@kernel.org>
Date: Wed,  7 Aug 2024 09:41:06 +0300
From: Mike Rapoport <rppt@...nel.org>
To: linux-kernel@...r.kernel.org
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	Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [PATCH v4 22/26] mm: numa_memblks: use memblock_{start,end}_of_DRAM() when sanitizing meminfo

From: "Mike Rapoport (Microsoft)" <rppt@...nel.org>

numa_cleanup_meminfo() moves blocks outside system RAM to
numa_reserved_meminfo and it uses 0 and PFN_PHYS(max_pfn) to determine
the memory boundaries.

Replace the memory range boundaries with more portable
memblock_start_of_DRAM() and memblock_end_of_DRAM().

Signed-off-by: Mike Rapoport (Microsoft) <rppt@...nel.org>
Tested-by: Zi Yan <ziy@...dia.com> # for x86_64 and arm64
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Tested-by: Jonathan Cameron <Jonathan.Cameron@...wei.com> [arm64 + CXL via QEMU]
Acked-by: Dan Williams <dan.j.williams@...el.com>
Acked-by: David Hildenbrand <david@...hat.com>
---
 mm/numa_memblks.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/numa_memblks.c b/mm/numa_memblks.c
index e97665a5e8ce..e4358ad92233 100644
--- a/mm/numa_memblks.c
+++ b/mm/numa_memblks.c
@@ -212,8 +212,8 @@ int __init numa_add_memblk(int nid, u64 start, u64 end)
  */
 int __init numa_cleanup_meminfo(struct numa_meminfo *mi)
 {
-	const u64 low = 0;
-	const u64 high = PFN_PHYS(max_pfn);
+	const u64 low = memblock_start_of_DRAM();
+	const u64 high = memblock_end_of_DRAM();
 	int i, j, k;
 
 	/* first, trim all entries */
-- 
2.43.0