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Re: [PATCH 4/4] x86: Drop mach_mpspec.h
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 11 Nov 2024 10:23:01 +0100
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 11 Nov 2024 09:23:11 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 08.11.2024 21:11, Andrew Cooper wrote:
> --- a/xen/arch/x86/include/asm/mach-default/mach_mpspec.h
> +++ /dev/null
> @@ -1,10 +0,0 @@
> -#ifndef __ASM_MACH_MPSPEC_H
> -#define __ASM_MACH_MPSPEC_H
> -
> -#define MAX_IRQ_SOURCES 256
> -
> -/* Generic (i.e. installer) kernels need lots of bus entries. */
> -/* Maximum 256 PCI busses, plus 1 ISA bus in each of 4 cabinets. */
This (presumably obsolete, but still) reasoning is entirely lost ...
> -#define MAX_MP_BUSSES 260
> -
> -#endif /* __ASM_MACH_MPSPEC_H */
> --- a/xen/arch/x86/include/asm/mpspec.h
> +++ b/xen/arch/x86/include/asm/mpspec.h
> @@ -3,7 +3,9 @@
>
> #include <xen/cpumask.h>
> #include <asm/mpspec_def.h>
> -#include <mach_mpspec.h>
> +
> +#define MAX_IRQ_SOURCES 256
> +#define MAX_MP_BUSSES 260
... for why it's 260 here. Imo the value either wants lowering to 256
(for there hardly being anything ISAish in 64-bit systems), or at least
that half of the comment retaining.
Jan
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