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 <caoj.fnst@xxxxxxxxxxxxxx> > --- > 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 > -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
