* [PATCH 1/1] x86_64: update address space documentation
@ 2008-11-08 10:24 Jiri Slaby
2008-11-08 11:40 ` Ingo Molnar
0 siblings, 1 reply; 2+ messages in thread
From: Jiri Slaby @ 2008-11-08 10:24 UTC (permalink / raw)
To: mingo; +Cc: tglx, hpa, linux-kernel, Jiri Slaby, Eduardo Habkost
Commit a6523748bddd38bcec11431f57502090b6014a96
(paravirt/x86, 64-bit: move __PAGE_OFFSET to leave a space for hypervisor)
changed address space without changing the documentation. Change it
according to the code change -- direct mapping start:
ffff810000000000 => ffff880000000000 which gives 57 TiB, something between
45 and 46 bits.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
---
Documentation/x86/x86_64/mm.txt | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt
index efce750..29b52b1 100644
--- a/Documentation/x86/x86_64/mm.txt
+++ b/Documentation/x86/x86_64/mm.txt
@@ -6,7 +6,7 @@ Virtual memory map with 4 level page tables:
0000000000000000 - 00007fffffffffff (=47 bits) user space, different per mm
hole caused by [48:63] sign extension
ffff800000000000 - ffff80ffffffffff (=40 bits) guard hole
-ffff810000000000 - ffffc0ffffffffff (=46 bits) direct mapping of all phys. memory
+ffff880000000000 - ffffc0ffffffffff (=57 TB) direct mapping of all phys. memory
ffffc10000000000 - ffffc1ffffffffff (=40 bits) hole
ffffc20000000000 - ffffe1ffffffffff (=45 bits) vmalloc/ioremap space
ffffe20000000000 - ffffe2ffffffffff (=40 bits) virtual memory map (1TB)
--
1.6.0.3
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH 1/1] x86_64: update address space documentation
2008-11-08 10:24 [PATCH 1/1] x86_64: update address space documentation Jiri Slaby
@ 2008-11-08 11:40 ` Ingo Molnar
0 siblings, 0 replies; 2+ messages in thread
From: Ingo Molnar @ 2008-11-08 11:40 UTC (permalink / raw)
To: Jiri Slaby; +Cc: mingo, tglx, hpa, linux-kernel, Eduardo Habkost
* Jiri Slaby <jirislaby@gmail.com> wrote:
> Commit a6523748bddd38bcec11431f57502090b6014a96
> (paravirt/x86, 64-bit: move __PAGE_OFFSET to leave a space for hypervisor)
> changed address space without changing the documentation. Change it
> according to the code change -- direct mapping start:
> ffff810000000000 => ffff880000000000 which gives 57 TiB, something between
> 45 and 46 bits.
>
> Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
> Cc: Eduardo Habkost <ehabkost@redhat.com>
> ---
> Documentation/x86/x86_64/mm.txt | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
applied to tip/x86/doc, thanks Jiri!
Ingo
^ permalink raw reply [flat|nested] 2+ messages in thread
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