Hi Min-Hua,
2015-05-27 22:23 GMT+08:00 Min-Hua Chen :
> Hi,
>
> Linux kernel basically manages all available physical memory pages.
> If user-space need a page, kernel allocates a page for it. Hence a
> physical page may be in mapped to user-space virtual address or
> kernel-space virtual address
Hi,
2015-05-27 21:54 GMT+08:00 Karaoui mohamed lamine :
> 2015-05-27 3:12 GMT+02:00 Le Tan :
>>
>> Hi,
>> Is there an explict split between userspace and kernel in physical
>> memory on Linux x86-64? That is, given a physical address, can I tell
>> whether this address is from userspace or not?
>
Hi,
Linux kernel basically manages all available physical memory pages.
If user-space need a page, kernel allocates a page for it. Hence a
physical page may be in mapped to user-space virtual address or
kernel-space virtual address or both.
The user-space and kernel-space exist in virtual addres
2015-05-27 3:12 GMT+02:00 Le Tan :
> Hi,
> Is there an explict split between userspace and kernel in physical
> memory on Linux x86-64? That is, given a physical address, can I tell
> whether this address is from userspace or not?
>
No. The same physical address can be used by both the kernel an
Hi,
Is there an explict split between userspace and kernel in physical
memory on Linux x86-64? That is, given a physical address, can I tell
whether this address is from userspace or not?
As far as I know, in virtual address space, the kernel will use the
upper half and the userspace will use the l
