Re: [PATCH v5 0/5] Add movablecore_map boot option

[Yasuaki Ishimatsu]

2013/01/15 7:41, Luck, Tony wrote:
> > hm, why.  Obviously SRAT support will improve things, but is it
> > actually unusable/unuseful with the command line configuration?

> Users will want to set these moveable zones along node boundaries
> (the whole purpose is to be able to remove a node by making sure
> the kernel won't allocate anything tricky in it, right?)

Yes

> So raw addresses
> are usable ... but to get them right the user will have to go parse the
> SRAT table manually to come up with the addresses.

I don't think so because user can easily get raw address by kernel
message in x86.

Here are kernel messages of x86 architecture.
---
[    0.000000] SRAT: Node 0 PXM 0 [mem 0x00000000-0x7fffffff]
[    0.000000] SRAT: Node 0 PXM 0 [mem 0x100000000-0x7ffffffff]
[    0.000000] SRAT: Node 1 PXM 2 [mem 0x1000000000-0x17ffffffff]
[    0.000000] SRAT: Node 2 PXM 3 [mem 0x1800000000-0x1fffffffff]
[    0.000000] SRAT: Node 3 PXM 4 [mem 0x2000000000-0x27ffffffff]
[    0.000000] SRAT: Node 4 PXM 5 [mem 0x2800000000-0x2fffffffff]
[    0.000000] SRAT: Node 5 PXM 6 [mem 0x3000000000-0x37ffffffff]
[    0.000000] SRAT: Node 6 PXM 7 [mem 0x3800000000-0x3fffffffff]
[    0.000000] SRAT: Node 7 PXM 1 [mem 0x800000000-0xfffffffff]
---

Thanks,
Yasuaki Ishimatsu

> Any time you
> make the user go off and do some tedious calculation that the computer
> should have done for them is user-abuse.
>
> -Tony


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