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commit 4714ae256f8cf75af2631eadc6d275e04f4d5d17
Author: Demi Marie Obenour <demi@invisiblethingslab.com>
AuthorDate: Tue Dec 20 16:49:16 2022 +0100
Commit: Jan Beulich <jbeulich@suse.com>
CommitDate: Tue Dec 20 16:49:16 2022 +0100

x86: add memory type constants

These are not currently used, so there is no functional change. Future
patches will use these constants.

Suggested-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Demi Marie Obenour <demi@invisiblethingslab.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
---
xen/arch/x86/include/asm/x86-defns.h | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/xen/arch/x86/include/asm/x86-defns.h b/xen/arch/x86/include/asm/x86-defns.h
index 28628807cb..42b5f382d4 100644
--- a/xen/arch/x86/include/asm/x86-defns.h
+++ b/xen/arch/x86/include/asm/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__ */
--
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