linux-kernel - [PATCH, RFC 49/62] mm, x86: export several MKTME variables

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Date:   Wed,  8 May 2019 17:44:09 +0300
From:   "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:     Andrew Morton <akpm@...ux-foundation.org>, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...capital.net>,
        David Howells <dhowells@...hat.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Kai Huang <kai.huang@...ux.intel.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Alison Schofield <alison.schofield@...el.com>,
        linux-mm@...ck.org, kvm@...r.kernel.org, keyrings@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCH, RFC 49/62] mm, x86: export several MKTME variables

From: Kai Huang <kai.huang@...ux.intel.com>

KVM needs those variables to get/set memory encryption mask.

Signed-off-by: Kai Huang <kai.huang@...ux.intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
---
 arch/x86/mm/mktme.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/mm/mktme.c b/arch/x86/mm/mktme.c
index df70651816a1..12f4266cf7ea 100644
--- a/arch/x86/mm/mktme.c
+++ b/arch/x86/mm/mktme.c
@@ -7,13 +7,16 @@
 
 /* Mask to extract KeyID from physical address. */
 phys_addr_t mktme_keyid_mask;
+EXPORT_SYMBOL_GPL(mktme_keyid_mask);
 /*
  * Number of KeyIDs available for MKTME.
  * Excludes KeyID-0 which used by TME. MKTME KeyIDs start from 1.
  */
 int mktme_nr_keyids;
+EXPORT_SYMBOL_GPL(mktme_nr_keyids);
 /* Shift of KeyID within physical address. */
 int mktme_keyid_shift;
+EXPORT_SYMBOL_GPL(mktme_keyid_shift);
 
 DEFINE_STATIC_KEY_FALSE(mktme_enabled_key);
 EXPORT_SYMBOL_GPL(mktme_enabled_key);
-- 
2.20.1