linux-kernel - [PATCH 1/3] x86/mm: expose track_pfn

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Message-Id: <20171027022524.22589-2-haozhong.zhang@intel.com>
Date:   Fri, 27 Oct 2017 10:25:22 +0800
From:   Haozhong Zhang <haozhong.zhang@...el.com>
To:     kvm@...r.kernel.org, x86@...nel.org
Cc:     linux-kernel@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        rkrcmar@...hat.com, Xiao Guangrong <xiaoguangrong.eric@...il.com>,
        Dan Williams <dan.j.williams@...el.com>,
        ivan.d.cuevas.escareno@...el.com, karthik.kumar@...el.com,
        Haozhong Zhang <haozhong.zhang@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...e.de>,
        Tom Lendacky <thomas.lendacky@....com>,
        Mikulas Patocka <mpatocka@...hat.com>
Subject: [PATCH 1/3] x86/mm: expose track_pfn_insert()

KVM MMU will use it to get the cache mode of the host pfn.

Signed-off-by: Haozhong Zhang <haozhong.zhang@...el.com>
---
 arch/x86/mm/pat.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index fe7d57a8fb60..cab593ea8956 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -998,6 +998,7 @@ void track_pfn_insert(struct vm_area_struct *vma, pgprot_t *prot, pfn_t pfn)
 	*prot = __pgprot((pgprot_val(*prot) & (~_PAGE_CACHE_MASK)) |
 			 cachemode2protval(pcm));
 }
+EXPORT_SYMBOL_GPL(track_pfn_insert);
 
 /*
  * untrack_pfn is called while unmapping a pfnmap for a region.
-- 
2.14.1