From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/arch/powerpc/kernel/kvm.c | 74 ++++++++++++-------------------------
1 files changed, 24 insertions(+), 50 deletions(-)
diff --git a/kernel/arch/powerpc/kernel/kvm.c b/kernel/arch/powerpc/kernel/kvm.c
index cd381e2..d89cf80 100644
--- a/kernel/arch/powerpc/kernel/kvm.c
+++ b/kernel/arch/powerpc/kernel/kvm.c
@@ -1,22 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2010 SUSE Linux Products GmbH. All rights reserved.
* Copyright 2010-2011 Freescale Semiconductor, Inc.
*
* Authors:
* Alexander Graf <agraf@suse.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2, as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/kvm_host.h>
@@ -76,16 +64,17 @@
#define KVM_INST_MTSRIN 0x7c0001e4
static bool kvm_patching_worked = true;
-char kvm_tmp[1024 * 1024];
+extern char kvm_tmp[];
+extern char kvm_tmp_end[];
static int kvm_tmp_index;
-static inline void kvm_patch_ins(u32 *inst, u32 new_inst)
+static void __init kvm_patch_ins(u32 *inst, u32 new_inst)
{
*inst = new_inst;
flush_icache_range((ulong)inst, (ulong)inst + 4);
}
-static void kvm_patch_ins_ll(u32 *inst, long addr, u32 rt)
+static void __init kvm_patch_ins_ll(u32 *inst, long addr, u32 rt)
{
#ifdef CONFIG_64BIT
kvm_patch_ins(inst, KVM_INST_LD | rt | (addr & 0x0000fffc));
@@ -94,7 +83,7 @@
#endif
}
-static void kvm_patch_ins_ld(u32 *inst, long addr, u32 rt)
+static void __init kvm_patch_ins_ld(u32 *inst, long addr, u32 rt)
{
#ifdef CONFIG_64BIT
kvm_patch_ins(inst, KVM_INST_LD | rt | (addr & 0x0000fffc));
@@ -103,12 +92,12 @@
#endif
}
-static void kvm_patch_ins_lwz(u32 *inst, long addr, u32 rt)
+static void __init kvm_patch_ins_lwz(u32 *inst, long addr, u32 rt)
{
kvm_patch_ins(inst, KVM_INST_LWZ | rt | (addr & 0x0000ffff));
}
-static void kvm_patch_ins_std(u32 *inst, long addr, u32 rt)
+static void __init kvm_patch_ins_std(u32 *inst, long addr, u32 rt)
{
#ifdef CONFIG_64BIT
kvm_patch_ins(inst, KVM_INST_STD | rt | (addr & 0x0000fffc));
@@ -117,17 +106,17 @@
#endif
}
-static void kvm_patch_ins_stw(u32 *inst, long addr, u32 rt)
+static void __init kvm_patch_ins_stw(u32 *inst, long addr, u32 rt)
{
kvm_patch_ins(inst, KVM_INST_STW | rt | (addr & 0x0000fffc));
}
-static void kvm_patch_ins_nop(u32 *inst)
+static void __init kvm_patch_ins_nop(u32 *inst)
{
kvm_patch_ins(inst, KVM_INST_NOP);
}
-static void kvm_patch_ins_b(u32 *inst, int addr)
+static void __init kvm_patch_ins_b(u32 *inst, int addr)
{
#if defined(CONFIG_RELOCATABLE) && defined(CONFIG_PPC_BOOK3S)
/* On relocatable kernels interrupts handlers and our code
@@ -140,11 +129,11 @@
kvm_patch_ins(inst, KVM_INST_B | (addr & KVM_INST_B_MASK));
}
-static u32 *kvm_alloc(int len)
+static u32 * __init kvm_alloc(int len)
{
u32 *p;
- if ((kvm_tmp_index + len) > ARRAY_SIZE(kvm_tmp)) {
+ if ((kvm_tmp_index + len) > (kvm_tmp_end - kvm_tmp)) {
printk(KERN_ERR "KVM: No more space (%d + %d)\n",
kvm_tmp_index, len);
kvm_patching_worked = false;
@@ -163,7 +152,7 @@
extern u32 kvm_emulate_mtmsrd_len;
extern u32 kvm_emulate_mtmsrd[];
-static void kvm_patch_ins_mtmsrd(u32 *inst, u32 rt)
+static void __init kvm_patch_ins_mtmsrd(u32 *inst, u32 rt)
{
u32 *p;
int distance_start;
@@ -216,7 +205,7 @@
extern u32 kvm_emulate_mtmsr_len;
extern u32 kvm_emulate_mtmsr[];
-static void kvm_patch_ins_mtmsr(u32 *inst, u32 rt)
+static void __init kvm_patch_ins_mtmsr(u32 *inst, u32 rt)
{
u32 *p;
int distance_start;
@@ -277,7 +266,7 @@
extern u32 kvm_emulate_wrtee_len;
extern u32 kvm_emulate_wrtee[];
-static void kvm_patch_ins_wrtee(u32 *inst, u32 rt, int imm_one)
+static void __init kvm_patch_ins_wrtee(u32 *inst, u32 rt, int imm_one)
{
u32 *p;
int distance_start;
@@ -334,7 +323,7 @@
extern u32 kvm_emulate_wrteei_0_len;
extern u32 kvm_emulate_wrteei_0[];
-static void kvm_patch_ins_wrteei_0(u32 *inst)
+static void __init kvm_patch_ins_wrteei_0(u32 *inst)
{
u32 *p;
int distance_start;
@@ -375,7 +364,7 @@
extern u32 kvm_emulate_mtsrin_len;
extern u32 kvm_emulate_mtsrin[];
-static void kvm_patch_ins_mtsrin(u32 *inst, u32 rt, u32 rb)
+static void __init kvm_patch_ins_mtsrin(u32 *inst, u32 rt, u32 rb)
{
u32 *p;
int distance_start;
@@ -411,7 +400,7 @@
#endif
-static void kvm_map_magic_page(void *data)
+static void __init kvm_map_magic_page(void *data)
{
u32 *features = data;
@@ -426,7 +415,7 @@
*features = out[0];
}
-static void kvm_check_ins(u32 *inst, u32 features)
+static void __init kvm_check_ins(u32 *inst, u32 features)
{
u32 _inst = *inst;
u32 inst_no_rt = _inst & ~KVM_MASK_RT;
@@ -670,7 +659,7 @@
extern u32 kvm_template_start[];
extern u32 kvm_template_end[];
-static void kvm_use_magic_page(void)
+static void __init kvm_use_magic_page(void)
{
u32 *p;
u32 *start, *end;
@@ -680,7 +669,7 @@
on_each_cpu(kvm_map_magic_page, &features, 1);
/* Quick self-test to see if the mapping works */
- if (!fault_in_pages_readable((const char *)KVM_MAGIC_PAGE, sizeof(u32))) {
+ if (fault_in_pages_readable((const char *)KVM_MAGIC_PAGE, sizeof(u32))) {
kvm_patching_worked = false;
return;
}
@@ -711,25 +700,13 @@
kvm_patching_worked ? "worked" : "failed");
}
-static __init void kvm_free_tmp(void)
-{
- /*
- * Inform kmemleak about the hole in the .bss section since the
- * corresponding pages will be unmapped with DEBUG_PAGEALLOC=y.
- */
- kmemleak_free_part(&kvm_tmp[kvm_tmp_index],
- ARRAY_SIZE(kvm_tmp) - kvm_tmp_index);
- free_reserved_area(&kvm_tmp[kvm_tmp_index],
- &kvm_tmp[ARRAY_SIZE(kvm_tmp)], -1, NULL);
-}
-
static int __init kvm_guest_init(void)
{
if (!kvm_para_available())
- goto free_tmp;
+ return 0;
if (!epapr_paravirt_enabled)
- goto free_tmp;
+ return 0;
if (kvm_para_has_feature(KVM_FEATURE_MAGIC_PAGE))
kvm_use_magic_page();
@@ -738,9 +715,6 @@
/* Enable napping */
powersave_nap = 1;
#endif
-
-free_tmp:
- kvm_free_tmp();
return 0;
}
--
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