linux-kernel - [PATCH 3/4] IB/qib: Compile under User-Mode Linux

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Date:   Fri, 18 Feb 2022 15:57:26 +0800
From:   David Gow <davidgow@...gle.com>
To:     Jeff Dike <jdike@...toit.com>, Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Randy Dunlap <rdunlap@...radead.org>
Cc:     David Gow <davidgow@...gle.com>, linux-um@...ts.infradead.org,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        kunit-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
        linux-rdma@...r.kernel.org, x86@...nel.org, felix.kuehling@....com,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] IB/qib: Compile under User-Mode Linux

The User-Mode-Linux architecture (with the x86_64 subarch) defines
CONFIG_X86_64, but doesn't expose the cpuinfo_x86 struct (instead
there's a cpuinfo_um struct).

In order to allow UML to build with allyesconfig, only check cpuinfo_x86
on non-UML architectures.

Signed-off-by: David Gow <davidgow@...gle.com>
---
 drivers/infiniband/hw/qib/qib_wc_x86_64.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/infiniband/hw/qib/qib_wc_x86_64.c b/drivers/infiniband/hw/qib/qib_wc_x86_64.c
index edd0ddbd4481..76fef1321c26 100644
--- a/drivers/infiniband/hw/qib/qib_wc_x86_64.c
+++ b/drivers/infiniband/hw/qib/qib_wc_x86_64.c
@@ -146,5 +146,9 @@ void qib_disable_wc(struct qib_devdata *dd)
  */
 int qib_unordered_wc(void)
 {
+#ifndef CONFIG_UML
 	return boot_cpu_data.x86_vendor != X86_VENDOR_AMD;
+#else
+	return 0;
+#endif
 }
-- 
2.35.1.265.g69c8d7142f-goog