Page MenuHomeFreeBSD
Files F97521747

D35442.id106790.diff
No OneTemporary
Actions

D35442.id106790.diff
View Options

diff --git a/sys/amd64/vmm/x86.h b/sys/amd64/vmm/x86.h
--- a/sys/amd64/vmm/x86.h
+++ b/sys/amd64/vmm/x86.h
@@ -41,6 +41,8 @@
#define CPUID_0000_000A (0xA)
#define CPUID_0000_000B (0xB)
#define CPUID_0000_000D (0xD)
+#define CPUID_0000_000F (0xF)
+#define CPUID_0000_0010 (0x10)
#define CPUID_0000_0015 (0x15)
#define CPUID_8000_0000 (0x80000000)
#define CPUID_8000_0001 (0x80000001)
diff --git a/sys/amd64/vmm/x86.c b/sys/amd64/vmm/x86.c
--- a/sys/amd64/vmm/x86.c
+++ b/sys/amd64/vmm/x86.c
@@ -576,6 +576,24 @@
}
break;
+ case CPUID_0000_000F:
+ case CPUID_0000_0010:
+ /*
+ * Do not report any Resource Director Technology
+ * capabilities. Exposing control of cache or memory
+ * controller resource partitioning to the guest is not
+ * at all sensible.
+ *
+ * This is already hidden at a high level by masking of
+ * leaf 0x7. Even still, a guest may look here for
+ * detailed capability information.
+ */
+ regs[0] = 0;
+ regs[1] = 0;
+ regs[2] = 0;
+ regs[3] = 0;
+ break;
+
case CPUID_0000_0015:
/*
* Don't report CPU TSC/Crystal ratio and clock

File Metadata

Mime Type
text/plain
Expires
Mon, Sep 30, 9:19 PM (19 h, 1 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
13205251
Default Alt Text
D35442.id106790.diff (1 KB)

Event Timeline