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From: ian.campbell@citrix.com (Ian Campbell)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] efi/libstub/fdt: Standardize the names of EFI stub parameters
Date: Mon, 14 Sep 2015 11:25:25 +0100	[thread overview]
Message-ID: <1442226325.3549.134.camel@citrix.com> (raw)
In-Reply-To: <CAKv+Gu_Gh649EwdtodLY9Q28JhqYg8o6RShXXH1ZbxsfYRfi2Q@mail.gmail.com>

On Mon, 2015-09-14 at 12:02 +0200, Ard Biesheuvel wrote:
> On 14 September 2015 at 11:57, Ian Campbell <ian.campbell@citrix.com> wrote:
> > >  or SetVirtualAddressMap/ConvertPointer, and
> > 
> > These two are RTS, so in principal it could.
> > 
> > (I'm not sure about ConvertPointer, is it useful for OS kernels, or
> > just
> > for "UEFI components" mentioned at 
> > http://wiki.phoenix.com/wiki/index.php/E
> > FI_RUNTIME_SERVICES#ConvertPointer.28.29 ?)
> > 
> 
> No, there is no point. The stub calls SetVirtualAddressMap, so the
> kernel proper can never call it, since it can only be called once.

I see. And changing this such that it was delayed until the kernel proper
would be a _major_ shift in the policy of separation between the UEFI stub
and the kernel proper. 

> ConvertPointer has little utility outside of the UEFI runtime
> components that are invoked during SetVirtualAddressMap,

That's the impression I was getting too. Thanks for confirming.

>  so I don't see a reason to supply that either.

Ack.

Ian.

  reply	other threads:[~2015-09-14 10:25 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-10  8:41 [PATCH] efi/libstub/fdt: Standardize the names of EFI stub parameters Shannon Zhao
2015-09-10  9:52 ` Mark Rutland
2015-09-10 10:19   ` Stefano Stabellini
2015-09-10 11:24     ` Mark Rutland
2015-09-10 11:37       ` Stefano Stabellini
2015-09-10 12:15         ` Mark Rutland
2015-09-10 12:58           ` [Xen-devel] " Ian Campbell
2015-09-10 13:08             ` Jan Beulich
2015-09-10 13:30               ` Ian Campbell
2015-09-10 13:52           ` Stefano Stabellini
2015-09-10 14:13             ` Leif Lindholm
2015-09-10 14:49             ` Mark Rutland
2015-09-10 16:10               ` Stefano Stabellini
2015-09-10 16:23                 ` Mark Rutland
2015-09-11 12:46                   ` Daniel Kiper
2015-09-11 13:14                     ` Stefano Stabellini
2015-09-11 13:30                       ` Ard Biesheuvel
2015-09-11 15:45                         ` Daniel Kiper
2015-09-14  8:42                           ` Shannon Zhao
2015-09-14  9:09                             ` Ard Biesheuvel
2015-09-14  9:31                               ` Shannon Zhao
2015-09-14  9:36                                 ` Ard Biesheuvel
2015-09-14 10:39                                   ` [Xen-devel] " Jan Beulich
2015-09-14 11:16                                     ` Ard Biesheuvel
2015-09-14 11:34                                       ` Jan Beulich
2015-09-11 16:33                         ` Mark Rutland
2015-09-11 16:25                     ` Mark Rutland
2015-09-12 11:36                       ` Daniel Kiper
2015-09-14  9:25                         ` Mark Rutland
2015-09-14  9:43                           ` Ard Biesheuvel
2015-09-14  9:57                             ` Ian Campbell
2015-09-14 10:02                               ` Ard Biesheuvel
2015-09-14 10:25                                 ` Ian Campbell [this message]
2015-09-14 12:28                             ` Daniel Kiper
2015-09-14 13:09                               ` Ard Biesheuvel
2015-09-14 13:57                                 ` Daniel Kiper
2015-09-14  9:47                           ` Stefano Stabellini
2015-09-14 12:19                           ` Daniel Kiper
2015-09-11 11:00                 ` Ian Campbell
2015-09-10 12:55         ` Jan Beulich
2015-09-10 14:53           ` Mark Rutland
2015-09-10 15:06             ` Jan Beulich
2015-09-11 16:36               ` Mark Rutland
2015-09-10 11:32 ` Andrew Turner
2015-09-10 11:48   ` Julien Grall
2015-09-10 12:05     ` Roger Pau Monné
2015-09-10 12:53       ` [Xen-devel] " Julien Grall
2015-09-17 11:43 ` Shannon Zhao

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