linux-kernel - [PATCH 1/1] um: Select HAS_IOREMAP for UML_IOMEM

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Message-Id: <20240403124300.65379-2-schnelle@linux.ibm.com>
Date: Wed,  3 Apr 2024 14:43:00 +0200
From: Niklas Schnelle <schnelle@...ux.ibm.com>
To: Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Johannes Berg <johannes@...solutions.net>
Cc: linux-um@...ts.infradead.org, Arnd Bergmann <arnd@...nel.org>,
        Heiko Carstens <hca@...ux.ibm.com>, linux-kernel@...r.kernel.org,
        Niklas Schnelle <schnelle@...ux.ibm.com>
Subject: [PATCH 1/1] um: Select HAS_IOREMAP for UML_IOMEM_EMULATION

In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at
compile time. UML supports these via its UML_IOMEM_EMULATION so let that
select HAS_IOPORT and also reflect this in NO_IOPORT_MAP.

Co-developed-by: Arnd Bergmann <arnd@...nel.org>
Signed-off-by: Arnd Bergmann <arnd@...nel.org>
Signed-off-by: Niklas Schnelle <schnelle@...ux.ibm.com>
---
 arch/um/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 93a5a8999b07..758016731156 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -48,12 +48,13 @@ config NO_IOMEM
 config UML_IOMEM_EMULATION
 	bool
 	select INDIRECT_IOMEM
+	select HAS_IOPORT
 	select GENERIC_PCI_IOMAP
 	select GENERIC_IOMAP
 	select NO_GENERIC_PCI_IOPORT_MAP
 
 config NO_IOPORT_MAP
-	def_bool y
+	def_bool !UML_IOMEM_EMULATION
 
 config ISA
 	bool
-- 
2.40.1