svn commit: r287934 - head/sys/boot/efi/loader

Warner Losh imp at bsdimp.com
Tue Sep 22 00:07:30 UTC 2015


Apart from the inlining issue John raised (which I agree with his solution on, btw)
and the one cam ctl module, what other modules are meaningfully different when
compiled as modules.

Assume that the auto-loading bit is solved, at least for devices on self-enumerating
busses.

Warner


> On Sep 21, 2015, at 4:53 PM, Rui Paulo <rpaulo at me.com> wrote:
> 
> No, that doesn't work very well.  Not only the modules don't auto-load, the way the modules are compiled is different.  See, for example, cam ctl which doesn't compile the sg code when it's built into the kernel, but compiles it when it's built as a module.  The sg code is currently buggy and causes insta-panics with GNOME 3 (perhaps the auto-mounter in hald (?)).
> --
> Rui Paulo
> 
> 
> On Sep 21, 2015, at 11:24 AM, Adrian Chadd <adrian.chadd at gmail.com> wrote:
> 
>> Hi,
>> 
>> Warner has been working on the modular kernel thing. But honestly, I
>> think we should just start biting that bullet and ship a modules-only
>> GENERIC by default..
>> 
>> 
>> -a
>> 
>> 
>> On 21 September 2015 at 11:02, Rui Paulo <rpaulo at me.com> wrote:
>>> So, we're going to keep ignoring the problem and keep patching things up?
>>> It's a bit sad that a single driver (pmspcv) is able to cause so much
>>> problems.
>>> 
>>> --
>>> Rui Paulo
>>> 
>>> 
>>> On Sep 17, 2015, at 01:36 PM, John Baldwin <jhb at FreeBSD.org> wrote:
>>> 
>>> Author: jhb
>>> Date: Thu Sep 17 20:36:46 2015
>>> New Revision: 287934
>>> URL: https://svnweb.freebsd.org/changeset/base/287934
>>> 
>>> 
>>> Log:
>>> The EFI boot loader allocates a single chunk of contiguous memory to
>>> hold the kernel, modules, and any other loaded data. This memory block
>>> is relocated to the kernel's expected location during the transfer of
>>> control from the loader to the kernel.
>>> 
>>> The GENERIC kernel on amd64 has recently grown such that a kernel + zfs.ko
>>> no longer fits in the default staging size. Bump the default size from
>>> 32MB to 48MB to provide more breathing room.
>>> 
>>> PR: 201679
>>> Reviewed by: imp
>>> MFC after: 1 week
>>> Differential Revision: https://reviews.freebsd.org/D3666
>>> 
>>> 
>>> Modified:
>>> head/sys/boot/efi/loader/copy.c
>>> 
>>> Modified: head/sys/boot/efi/loader/copy.c
>>> ==============================================================================
>>> --- head/sys/boot/efi/loader/copy.c Thu Sep 17 20:36:34 2015
>>> (r287933)
>>> +++ head/sys/boot/efi/loader/copy.c Thu Sep 17 20:36:46 2015
>>> (r287934)
>>> @@ -38,7 +38,7 @@ __FBSDID("$FreeBSD$");
>>> #include <efilib.h>
>>> 
>>> #ifndef EFI_STAGING_SIZE
>>> -#define EFI_STAGING_SIZE 32
>>> +#define EFI_STAGING_SIZE 48
>>> #endif
>>> 
>>> #define STAGE_PAGES ((EFI_STAGING_SIZE) * 1024 * 1024 / 4096)
>>> 

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