Signed-off-by: Cao jin <[email protected]>
---
Documentation/x86/x86_64/mm.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt
index ea91cb61a602..8d09b6e5eb3f 100644
--- a/Documentation/x86/x86_64/mm.txt
+++ b/Documentation/x86/x86_64/mm.txt
@@ -2,7 +2,7 @@
Virtual memory map with 4 level page tables:
0000000000000000 - 00007fffffffffff (=47 bits) user space, different per mm
-hole caused by [47:63] sign extension
+hole caused by [48:63] sign extension
ffff800000000000 - ffff87ffffffffff (=43 bits) guard hole, reserved for hypervisor
ffff880000000000 - ffffc7ffffffffff (=64 TB) direct mapping of all phys. memory
ffffc80000000000 - ffffc8ffffffffff (=40 bits) hole
--
2.14.3
Finally know why I have this wrong understanding according to private
discussion.
Sorry for the noise
--
Sincerely,
Cao jin
On 01/15/2018 11:36 AM, Cao jin wrote:
> Signed-off-by: Cao jin <[email protected]>
> ---
> Documentation/x86/x86_64/mm.txt | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt
> index ea91cb61a602..8d09b6e5eb3f 100644
> --- a/Documentation/x86/x86_64/mm.txt
> +++ b/Documentation/x86/x86_64/mm.txt
> @@ -2,7 +2,7 @@
> Virtual memory map with 4 level page tables:
>
> 0000000000000000 - 00007fffffffffff (=47 bits) user space, different per mm
> -hole caused by [47:63] sign extension
> +hole caused by [48:63] sign extension
> ffff800000000000 - ffff87ffffffffff (=43 bits) guard hole, reserved for hypervisor
> ffff880000000000 - ffffc7ffffffffff (=64 TB) direct mapping of all phys. memory
> ffffc80000000000 - ffffc8ffffffffff (=40 bits) hole
>