linux-kernel - [PATCH v2 1/5] efi: add macro for EFI_MEMORY

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Message-Id: <1409743943-16934-2-git-send-email-lersek@redhat.com>
Date:	Wed,  3 Sep 2014 13:32:19 +0200
From:	Laszlo Ersek <lersek@...hat.com>
To:	mingo@...nel.org, linux-efi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	x86@...nel.org, linux-ia64@...r.kernel.org, matt.fleming@...el.com,
	msalter@...hat.com, lersek@...hat.com
Subject: [PATCH v2 1/5] efi: add macro for EFI_MEMORY_UCE memory attribute

Add the following macro from the UEFI spec, for completeness:

  EFI_MEMORY_UCE  Memory cacheability attribute: The memory region
                  supports being configured as not cacheable, exported,
                  and supports the "fetch and add" semaphore mechanism.

Signed-off-by: Laszlo Ersek <lersek@...hat.com>
---
 include/linux/efi.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/efi.h b/include/linux/efi.h
index 45cb4ff..b4b1d8d 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -92,6 +92,7 @@ typedef	struct {
 #define EFI_MEMORY_WC		((u64)0x0000000000000002ULL)	/* write-coalescing */
 #define EFI_MEMORY_WT		((u64)0x0000000000000004ULL)	/* write-through */
 #define EFI_MEMORY_WB		((u64)0x0000000000000008ULL)	/* write-back */
+#define EFI_MEMORY_UCE		((u64)0x0000000000000010ULL)	/* uncached, exported */
 #define EFI_MEMORY_WP		((u64)0x0000000000001000ULL)	/* write-protect */
 #define EFI_MEMORY_RP		((u64)0x0000000000002000ULL)	/* read-protect */
 #define EFI_MEMORY_XP		((u64)0x0000000000004000ULL)	/* execute-protect */
-- 
1.8.3.1


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