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Message-ID: <b1a380ad-50b4-4a00-2480-ac4d1542c71f@intel.com>
Date: Mon, 20 Mar 2023 11:58:14 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Jacob Pan <jacob.jun.pan@...ux.intel.com>,
LKML <linux-kernel@...r.kernel.org>, iommu@...ts.linux.dev,
Jason Gunthorpe <jgg@...dia.com>,
Lu Baolu <baolu.lu@...ux.intel.com>,
Joerg Roedel <joro@...tes.org>,
Jean-Philippe Brucker <jean-philippe@...aro.com>,
Robin Murphy <robin.murphy@....com>,
Thomas Gleixner <tglx@...utronix.de>,
X86 Kernel <x86@...nel.org>, bp@...en8.de,
"H. Peter Anvin" <hpa@...or.com>,
Peter Zijlstra <peterz@...radead.org>, corbet@....net,
vkoul@...nel.org, dmaengine@...r.kernel.org,
linux-doc@...r.kernel.org
Cc: Will Deacon <will@...nel.org>,
David Woodhouse <dwmw2@...radead.org>,
Raj Ashok <ashok.raj@...el.com>,
"Tian, Kevin" <kevin.tian@...el.com>, Yi Liu <yi.l.liu@...el.com>,
"Yu, Fenghua" <fenghua.yu@...el.com>,
Dave Jiang <dave.jiang@...el.com>,
Kirill Shutemov <kirill.shutemov@...ux.intel.com>,
Tony Luck <tony.luck@...el.com>
Subject: Re: [PATCH v7 6/7] iommu/ioasid: Rename INVALID_IOASID
On 3/20/23 11:59, Jacob Pan wrote:
> --- a/arch/x86/kernel/traps.c
> +++ b/arch/x86/kernel/traps.c
> @@ -40,7 +40,10 @@
> #include <linux/io.h>
> #include <linux/hardirq.h>
> #include <linux/atomic.h>
> -#include <linux/ioasid.h>
> +
> +#ifdef CONFIG_IOMMU_SVA
> +#include <linux/iommu.h>
> +#endif
What's the deal with the #ifdef'd #include?
What's the harm of just making it unconditional?
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