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Re: x86 bootstrap features



On 24.09.2019 14:26, Emmanuel Dreyfus wrote:
> On Tue, Sep 24, 2019 at 01:31:51PM +0200, Kamil Rytarowski wrote:
>> My use-case is "qemu-system-x86_64 -kernel ./netbsd". Last I tried (with
>> multiboot2 patches merged) it still did not work.
> 
> I did not commit anything in multiboot support in the NetBSD kernel,
> I only worked on bootstraps for now, hence the steady failure you
> experience should come at no suprise.
> 
> For now our kernel has support code for multiboot 1 for i386 only. 
> Reading Qemu sources, thare is only multiboot 1 support. Hence
> qemu-system-i386 -kernel netbsd.bz2 should work, but I only had
> this message:
> SeaBIOS (version rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org)
> Booting from ROM..
> 
> Reading the sources, it seems you can get more diagnostics by
> rebuilding Qemu with higher CONFIG_DEBUG_LEVEL.
> 
> 

qemu-system-i386 works, but -x86_64 not.

Are there plans to add it to the amd64 kernel?

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