1 /* Copyright (C) 2007-2008 The Android Open Source Project
2 **
3 ** This software is licensed under the terms of the GNU General Public
4 ** License version 2, as published by the Free Software Foundation, and
5 ** may be copied, distributed, and modified under those terms.
6 **
7 ** This program is distributed in the hope that it will be useful,
8 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
9 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 ** GNU General Public License for more details.
11 */
12 #include "hw.h"
13 #include "goldfish_vmem.h"
14 #ifdef TARGET_I386
15 #include "kvm.h"
16 #endif
17
18
19 // Both safe_memory_rw_debug and safe_get_phys_page_debug need to translate
20 // virtual addresses to physical addresses. When running on KVM we need to
21 // pull the cr registers and hflags from the VCPU. These functions wrap the
22 // calls to kvm_get_sregs to pull these registers over when necessary.
23 //
24 // Note: we do not call the cpu_synchronize_state function because that pulls
25 // all the VCPU registers. That equates to 4 ioctls on the KVM virtual device
26 // and on AMD some of those ioctls (in particular KVM_GET_MSRS) are 10 to 100x
27 // slower than on Intel chips.
28
safe_memory_rw_debug(CPUState * env,target_ulong addr,uint8_t * buf,int len,int is_write)29 int safe_memory_rw_debug(CPUState *env, target_ulong addr, uint8_t *buf,
30 int len, int is_write)
31 {
32 #ifdef TARGET_I386
33 if (kvm_enabled()) {
34 kvm_get_sregs(env);
35 }
36 #endif
37 return cpu_memory_rw_debug(env, addr, buf, len, is_write);
38 }
39
safe_get_phys_page_debug(CPUState * env,target_ulong addr)40 target_phys_addr_t safe_get_phys_page_debug(CPUState *env, target_ulong addr)
41 {
42 #ifdef TARGET_I386
43 if (kvm_enabled()) {
44 kvm_get_sregs(env);
45 }
46 #endif
47 return cpu_get_phys_page_debug(env, addr);
48 }
49
50