From: Wei Yang <richard.weiyang@gmail.com>
To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
Wei Yang <richard.weiyang@gmail.com>
Subject: [PATCH 1/2] x86/boot/e820: not necessary to iterate whole overlap_list
Date: Thu, 28 Mar 2024 02:28:29 +0000 [thread overview]
Message-ID: <20240328022830.22802-1-richard.weiyang@gmail.com> (raw)
We are sure there is only one entry to be removed from overlap_list.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
---
arch/x86/kernel/e820.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 6f1b379e3b38..ecbeb76ed08f 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -377,10 +377,11 @@ int __init e820__update_table(struct e820_table *table)
} else {
/* Remove entry from list (order independent, so swap with last): */
for (i = 0; i < overlap_entries; i++) {
- if (overlap_list[i] == change_point[chg_idx]->entry)
- overlap_list[i] = overlap_list[overlap_entries-1];
+ if (overlap_list[i] == change_point[chg_idx]->entry) {
+ overlap_list[i] = overlap_list[--overlap_entries];
+ break;
+ }
}
- overlap_entries--;
}
/*
* If there are overlapping entries, decide which
--
2.34.1
next reply other threads:[~2024-03-28 2:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-28 2:28 Wei Yang [this message]
2024-03-28 2:28 ` [PATCH 2/2] x86/boot/e820: a local variable for last_addr is not necessary Wei Yang
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