On 30/08/2024 10:46 pm, Daniel P. Smith wrote:
> diff --git a/xen/arch/x86/include/asm/bootinfo.h
> b/xen/arch/x86/include/asm/bootinfo.h
> index 844262495962..3e0e36df096b 100644
> --- a/xen/arch/x86/include/asm/bootinfo.h
> +++ b/xen/arch/x86/include/asm/bootinfo.h
> @@ -13,6 +13,7 @@
>
> struct boot_module {
> module_t *early_mod;
> + unsigned long headroom;
This needs a comment explaining what it's for. Perhaps crib from ...
> diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
> index 8912956ee7f1..fd6cc7fac907 100644
> --- a/xen/arch/x86/setup.c
> +++ b/xen/arch/x86/setup.c
> @@ -1475,8 +1477,10 @@ void asmlinkage __init noreturn __start_xen(unsigned
> long mbi_p)
> * decompressor overheads of mod[0] (the dom0 kernel). When we
> * move mod[0], we incorporate this as extra space at the start.
> */
... here, while also editing to to prevent it going stale.
It is this patch which stops modules_headroom being strictly the dom0
kernel.
~Andrew
