linux-kernel - [PATCH 2/2] powerpc/pci: Enable PPC_PCI_BUS_NUM_DOMAIN

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Date:   Wed, 17 Aug 2022 18:39:27 +0200
From:   Pali Rohár <pali@...nel.org>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] powerpc/pci: Enable PPC_PCI_BUS_NUM_DOMAIN_DEPENDENT by default

It makes sense to enable CONFIG_PPC_PCI_BUS_NUM_DOMAIN_DEPENDENT by default
(when possible by dependencies) to take advantages of all 256 PCI buses on
each PCI domain, like it is already on all other kernel architectures.

Signed-off-by: Pali Rohár <pali@...nel.org>
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index df2696c406ad..0905e4807815 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -387,6 +387,7 @@ config PPC_PCI_BUS_NUM_DOMAIN_DEPENDENT
 	depends on PPC32
 	depends on !PPC_PCI_OF_BUS_MAP_FILL
 	bool "Assign PCI bus numbers from zero individually for each PCI domain"
+	default y
 	help
 	  By default on PPC32 were PCI bus numbers unique across all PCI domains.
 	  So system could have only 256 PCI buses independently of available
-- 
2.20.1