linux-kernel - [tip:x86/dma] set_memory.h: Provide set_memory

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Message-ID: <tip-b7fa07460b0f0e9fbe6d9319a0864c145bd59bcb@git.kernel.org>
Date:   Fri, 23 Mar 2018 12:52:30 -0700
From:   tip-bot for Christoph Hellwig <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mulix@...ix.org, joro@...tes.org, tglx@...utronix.de,
        hpa@...or.com, peterz@...radead.org, konrad.wilk@...cle.com,
        hch@....de, thomas.lendacky@....com, dwmw2@...radead.org,
        torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
        jdmason@...zu.us, mingo@...nel.org
Subject: [tip:x86/dma] set_memory.h: Provide set_memory_{en,de}crypted()
 stubs

Commit-ID:  b7fa07460b0f0e9fbe6d9319a0864c145bd59bcb
Gitweb:     https://git.kernel.org/tip/b7fa07460b0f0e9fbe6d9319a0864c145bd59bcb
Author:     Christoph Hellwig <hch@....de>
AuthorDate: Mon, 19 Mar 2018 11:38:22 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 20 Mar 2018 10:01:58 +0100

set_memory.h: Provide set_memory_{en,de}crypted() stubs

... to make these APIs more universally available.

Tested-by: Tom Lendacky <thomas.lendacky@....com>
Signed-off-by: Christoph Hellwig <hch@....de>
Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@....com>
Cc: David Woodhouse <dwmw2@...radead.org>
Cc: Joerg Roedel <joro@...tes.org>
Cc: Jon Mason <jdmason@...zu.us>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Muli Ben-Yehuda <mulix@...ix.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: iommu@...ts.linux-foundation.org
Link: http://lkml.kernel.org/r/20180319103826.12853-11-hch@lst.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/linux/set_memory.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/linux/set_memory.h b/include/linux/set_memory.h
index e5140648f638..da5178216da5 100644
--- a/include/linux/set_memory.h
+++ b/include/linux/set_memory.h
@@ -17,4 +17,16 @@ static inline int set_memory_x(unsigned long addr,  int numpages) { return 0; }
 static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; }
 #endif
 
+#ifndef CONFIG_ARCH_HAS_MEM_ENCRYPT
+static inline int set_memory_encrypted(unsigned long addr, int numpages)
+{
+	return 0;
+}
+
+static inline int set_memory_decrypted(unsigned long addr, int numpages)
+{
+	return 0;
+}
+#endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */
+
 #endif /* _LINUX_SET_MEMORY_H_ */