Commit 3b42349d authored Jan 19, 2018 by Jan Kiszka Committed by Thomas Gleixner Jan 20, 2018

x86/jailhouse: Respect pci=lastbus command line settings



Limiting the scan width to the known last bus via the command line can
accelerate the boot noteworthy.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jailhouse <jailhouse-dev@googlegroups.com>
Link: https://lkml.kernel.org/r/51f5fe62-ca8f-9286-5cdb-39df3fad78b4@siemens.com

parent 11f19ec0

arch/x86/kernel/jailhouse.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -119,7 +119,9 @@ static int __init jailhouse_pci_arch_init(void)
		/*
		* There are no bridges on the virtual PCI root bus under Jailhouse,
		* thus no other way to discover all devices than a full scan.
		* Respect any overrides via the command line, though.
		*/
		if (pcibios_last_bus < 0)
		pcibios_last_bus = 0xff;

		return 0;