ARM: Xen: fix initial build problems (f880b67d) · Commits · 戴 / test

* The XEN_BALLOON code requires the balloon infrastructure that is not getting built on ARM. * The tmem hypercall is not available on ARM * ARMv6 does not support cmpxchg on 16-bit words that are used in the Xen grant table code, so we must ensure that Xen support is only built on ARMv7-only kernels not combined ARMv6/v7 kernels. * sys-hypervisor.c needs to include linux/err.h in order to use the IS_ERR/PTR_ERR/ERR_PTR family of functions. Signed-off-by:

Arnd Bergmann <arnd@arndb.de> Acked-by:

Ian Campbell <ian.campbell@citrix.com> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: xen-devel@lists.xensource.com

arch/arm/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -1846,6 +1846,7 @@ config XEN_DOM0
		config XEN
		bool "Xen guest support on ARM (EXPERIMENTAL)"
		depends on EXPERIMENTAL && ARM && OF
		depends on CPU_V7 && !CPU_V6
		help
		Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.

drivers/xen/Kconfig

+2 −0

Original line number	Diff line number	Diff line
		@@ -3,6 +3,7 @@ menu "Xen driver support"

		config XEN_BALLOON
		bool "Xen memory balloon driver"
		depends on !ARM
		default y
		help
		The balloon driver allows the Xen domain to request more memory from
		@@ -145,6 +146,7 @@ config SWIOTLB_XEN

		config XEN_TMEM
		bool
		depends on !ARM
		default y if (CLEANCACHE \|\| FRONTSWAP)
		help
		Shim to interface in-kernel Transcendent Memory hooks

drivers/xen/sys-hypervisor.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -11,6 +11,7 @@
		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/kobject.h>
		#include <linux/err.h>

		#include <asm/xen/hypervisor.h>
		#include <asm/xen/hypercall.h>

Admin message