Hi Perter,
I read some code lines of QEMU in the past week and have more understanding
about QEMU. But there are also a lot of things unclear in my mind. And I
beg you help me again.
First, I found there are some x86 instructions translated from TCG
instructions will access the "RAM device" direc
2012/3/15 周春华 :
> Dear Peter Maydell,
>
> Thank you for your help. I got an idea to log the guest physical address,
> would you mind help me to check it?
>
> Because the function tcg_out_qemu_ld() and tcg_out_qemu_st() know the guest
> virtual address should be accessed, we can call the
> [target-a
Dear Peter Maydell,
Thank you for your help. I got an idea to log the guest physical address,
would you mind help me to check it?
Because the function tcg_out_qemu_ld() and tcg_out_qemu_st() know the guest
virtual address should be accessed, we can call the
[target-arm/helper.c:get_phys_addr] fun
2012/3/15 周春华 :
> Peter Maydell wrote:
>> Note that there are other slow paths for memory access which don't
>> use the TLB and instead do go via physical addresses at the time
>> they need to do the load/store.
>
> I want to know how to use these slow paths. Will they will "guest virtual ->
> gues
Dear Peter Maydell,
I am very appreciated for you great help. There is still a question exist:
Note that there are other slow paths for memory access which don't
> use the TLB and instead do go via physical addresses at the time
> they need to do the load/store.
I want to know how to use these
2012/3/15 周春华 :
> Do you means that the QEMU TLB maps the guest virtual address to host
> virtual address,
Yes.
> and the begging and end virtual addresses of the memory
> allocated for RAM device emulating are the RAM physical begging and end
> address from guest view?
I don't know what you mea
Dear Peter Maydell,
Thanks for your reply. Would you mind give me more help?
My PC architecture is x86, so the tcg_out_qemu_ld() and tcg_out_qemu_st()
is in tcg/i386/tcg-target.c. Nevertheless, it is difficult for me to
understand them completely.
Do you means that the QEMU TLB maps the guest vi
On 14 March 2012 14:01, 周春华 wrote:
> I got a job that should log the RAM memory access in the QEMU. First, I
> should find out the code line in QEMU to trap all RAM memory access. After
> some efforts, I have some conclusions:
>
> 1. I have found the function dealing with the translation from the
Dear linus.walleij,
I am sorry to trouble you. Would you mind give a hand?
I got a job that should log the RAM memory access in the QEMU. First, I
should find out the code line in QEMU to trap all RAM memory access. After
some efforts, I have some conclusions:
1. I have found the function dealin
