linux-kernel - [PATCH] drivers: iommu: hyperv: Make HYPERV

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Message-Id: <20191017005711.2013647-1-boqun.feng@gmail.com>
Date:   Thu, 17 Oct 2019 08:57:03 +0800
From:   Boqun Feng <boqun.feng@...il.com>
To:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Cc:     Boqun Feng <boqun.feng@...il.com>,
        Lan Tianyu <Tianyu.Lan@...rosoft.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        linux-hyperv@...r.kernel.org, Joerg Roedel <joro@...tes.org>
Subject: [PATCH] drivers: iommu: hyperv: Make HYPERV_IOMMU only available on x86

Currently hyperv-iommu is implemented in a x86 specific way, for
example, apic is used. So make the HYPERV_IOMMU Kconfig depend on X86
as a preparation for enabling HyperV on architecture other than x86.

Cc: Lan Tianyu <Tianyu.Lan@...rosoft.com>
Cc: Michael Kelley <mikelley@...rosoft.com>
Cc: linux-hyperv@...r.kernel.org
Signed-off-by: Boqun Feng (Microsoft) <boqun.feng@...il.com>
---

Without this patch, I could observe compile error:

| drivers/iommu/hyperv-iommu.c:17:10: fatal error: asm/apic.h: No such
| file or directory
|   17 | #include <asm/apic.h>
|      |          ^~~~~~~~~~~~

, after apply Michael's ARM64 on HyperV enablement patchset.

 drivers/iommu/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index e3842eabcfdd..f1086eaed41c 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -467,7 +467,7 @@ config QCOM_IOMMU
 
 config HYPERV_IOMMU
 	bool "Hyper-V x2APIC IRQ Handling"
-	depends on HYPERV
+	depends on HYPERV && X86
 	select IOMMU_API
 	default HYPERV
 	help
-- 
2.23.0