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Re: [PATCH 2/2] x86/trampoline: Rationalise the constants to describe the size
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 13 Nov 2024 13:02:27 +0100
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, "Daniel P . Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, Frediano Ziglio <frediano.ziglio@xxxxxxxxx>, Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Wed, 13 Nov 2024 12:02:36 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 13.11.2024 12:36, Andrew Cooper wrote:
> On 13/11/2024 9:30 am, Andrew Cooper wrote:
>> diff --git a/xen/arch/x86/efi/efi-boot.h b/xen/arch/x86/efi/efi-boot.h
>> index 7930b7c73892..9d3f2b71447e 100644
>> --- a/xen/arch/x86/efi/efi-boot.h
>> +++ b/xen/arch/x86/efi/efi-boot.h
>> @@ -633,7 +633,7 @@ static void __init efi_arch_memory_setup(void)
>> if ( efi_enabled(EFI_LOADER) )
>> cfg.size = trampoline_end - trampoline_start;
>> else
>> - cfg.size = TRAMPOLINE_SPACE + TRAMPOLINE_STACK_SPACE;
>> + cfg.size = TRAMPOLINE_SIZE;
>
> Something I forgot to mention.
>
> The EFI_LOADER side of this conditional means that the heap isn't valid.
>
> This includes modelist, vesa_glob_info and vesa_mode_info from video.S,
> but I can't find where they're used at all.
If nothing else, then iirc to hand (whole struct) to Dom0 upon request.
Jan
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