From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/arch/arm/xen/p2m.c | 13 +++++++++----
1 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/kernel/arch/arm/xen/p2m.c b/kernel/arch/arm/xen/p2m.c
index 8a8a388..4a1991a 100644
--- a/kernel/arch/arm/xen/p2m.c
+++ b/kernel/arch/arm/xen/p2m.c
@@ -1,4 +1,5 @@
-#include <linux/bootmem.h>
+// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/memblock.h>
#include <linux/gfp.h>
#include <linux/export.h>
#include <linux/spinlock.h>
@@ -61,17 +62,19 @@
unsigned long __pfn_to_mfn(unsigned long pfn)
{
- struct rb_node *n = phys_to_mach.rb_node;
+ struct rb_node *n;
struct xen_p2m_entry *entry;
unsigned long irqflags;
read_lock_irqsave(&p2m_lock, irqflags);
+ n = phys_to_mach.rb_node;
while (n) {
entry = rb_entry(n, struct xen_p2m_entry, rbnode_phys);
if (entry->pfn <= pfn &&
entry->pfn + entry->nr_pages > pfn) {
+ unsigned long mfn = entry->mfn + (pfn - entry->pfn);
read_unlock_irqrestore(&p2m_lock, irqflags);
- return entry->mfn + (pfn - entry->pfn);
+ return mfn;
}
if (pfn < entry->pfn)
n = n->rb_left;
@@ -151,10 +154,11 @@
int rc;
unsigned long irqflags;
struct xen_p2m_entry *p2m_entry;
- struct rb_node *n = phys_to_mach.rb_node;
+ struct rb_node *n;
if (mfn == INVALID_P2M_ENTRY) {
write_lock_irqsave(&p2m_lock, irqflags);
+ n = phys_to_mach.rb_node;
while (n) {
p2m_entry = rb_entry(n, struct xen_p2m_entry, rbnode_phys);
if (p2m_entry->pfn <= pfn &&
@@ -185,6 +189,7 @@
rc = xen_add_phys_to_mach_entry(p2m_entry);
if (rc < 0) {
write_unlock_irqrestore(&p2m_lock, irqflags);
+ kfree(p2m_entry);
return false;
}
write_unlock_irqrestore(&p2m_lock, irqflags);
--
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