x86/apic: Simplify X2APIC ID validation

Browse source

Currently, x2apic_max_apicid==0 means that there is no max APIC id limit.
But, this means that 0 needs to be special-cased.

Designate UINT_MAX to mean unlimited so that a plain old less than or equal
compare works and there is no special-casing.  Replace the 0 initialization
with UINT_MAX.

[ dhansen: muck with changelog ]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Juergen Gross <jgross@suse.com> # Xen PV (dom0 and unpriv. guest)

...

This commit is contained in:

Thomas Gleixner 2023-08-08 15:04:10 -07:00 • committed by Dave Hansen

parent d92e5e7cf5

commit a9d608c22a

1 changed files with 2 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

7

arch/x86/kernel/apic/x2apic_phys.c

View file