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patch-0005-x86-Add-memory-type-constants.patch
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patch-0005-x86-Add-memory-type-constants.patch
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From e614713b2fa8d12f437c59a1ad99f6e25f792d55 Mon Sep 17 00:00:00 2001
Message-Id: <e614713b2fa8d12f437c59a1ad99f6e25f792d55.1671771766.git.demi@invisiblethingslab.com>
In-Reply-To: <[email protected]>
References: <[email protected]>
From: Demi Marie Obenour <[email protected]>
Date: Tue, 20 Dec 2022 16:49:16 +0100
Subject: [PATCH 05/10] x86: Add memory type constants
Cc: Marek Marczykowski-Górecki <[email protected]>
These are not currently used, so there is no functional change. Future
patches will use these constants.
Suggested-by: Andrew Cooper <[email protected]>
Signed-off-by: Demi Marie Obenour <[email protected]>
Acked-by: Jan Beulich <[email protected]>
---
xen/include/asm-x86/x86-defns.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/xen/include/asm-x86/x86-defns.h b/xen/include/asm-x86/x86-defns.h
index 28628807cb9897cf6fa8e266f71f5f220813984d..42b5f382d438d21ac97b6438e8c810c7b964cf6d 100644
--- a/xen/include/asm-x86/x86-defns.h
+++ b/xen/include/asm-x86/x86-defns.h
@@ -153,4 +153,15 @@
(1u << X86_EXC_AC) | (1u << X86_EXC_CP) | \
(1u << X86_EXC_VC) | (1u << X86_EXC_SX))
+/* Memory types */
+#define X86_MT_UC 0x00 /* uncachable */
+#define X86_MT_WC 0x01 /* write-combined */
+#define X86_MT_RSVD_2 0x02 /* reserved */
+#define X86_MT_RSVD_3 0x03 /* reserved */
+#define X86_MT_WT 0x04 /* write-through */
+#define X86_MT_WP 0x05 /* write-protect */
+#define X86_MT_WB 0x06 /* write-back */
+#define X86_MT_UCM 0x07 /* UC- */
+#define X86_NUM_MT 0x08
+
#endif /* __XEN_X86_DEFNS_H__ */
--
Sincerely,
Demi Marie Obenour (she/her/hers)
Invisible Things Lab