|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen staging] x86/feature: Generalise synth and introduce a bug word
commit 6408ae3f80287e194cd66218f28edcec939b6fca
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Thu Dec 27 15:13:55 2018 +0000
Commit: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Thu Sep 5 19:38:40 2019 +0100
x86/feature: Generalise synth and introduce a bug word
Future changes are going to want to use cpu_bug_* in a mannor similar to
Linux. Introduce one bug word, and generalise the calculation of
NCAPINTS.
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
xen/include/asm-x86/cpufeatures.h | 67 ++++++++++++++++++++++-----------------
1 file changed, 38 insertions(+), 29 deletions(-)
diff --git a/xen/include/asm-x86/cpufeatures.h
b/xen/include/asm-x86/cpufeatures.h
index 57f3e61fd5..ab3650f73b 100644
--- a/xen/include/asm-x86/cpufeatures.h
+++ b/xen/include/asm-x86/cpufeatures.h
@@ -4,35 +4,44 @@
#include <xen/lib/x86/cpuid-autogen.h>
+/* Number of capability words covered by the featureset words. */
#define FSCAPINTS FEATURESET_NR_ENTRIES
-#define NCAPINTS (FSCAPINTS + 1) /* N 32-bit words worth of info */
+/* Synthetic words follow the featureset words. */
+#define X86_NR_SYNTH 1
+#define X86_SYNTH(x) (FSCAPINTS * 32 + (x))
-/* Other features, Xen-defined mapping. */
-/* This range is used for feature bits which conflict or are synthesized */
-XEN_CPUFEATURE(CONSTANT_TSC, (FSCAPINTS+0)*32+ 0) /* TSC ticks at a
constant rate */
-XEN_CPUFEATURE(NONSTOP_TSC, (FSCAPINTS+0)*32+ 1) /* TSC does not stop in C
states */
-XEN_CPUFEATURE(ARAT, (FSCAPINTS+0)*32+ 2) /* Always running APIC
timer */
-XEN_CPUFEATURE(ARCH_PERFMON, (FSCAPINTS+0)*32+ 3) /* Intel Architectural
PerfMon */
-XEN_CPUFEATURE(TSC_RELIABLE, (FSCAPINTS+0)*32+ 4) /* TSC is known to be
reliable */
-XEN_CPUFEATURE(XTOPOLOGY, (FSCAPINTS+0)*32+ 5) /* cpu topology enum
extensions */
-XEN_CPUFEATURE(CPUID_FAULTING, (FSCAPINTS+0)*32+ 6) /* cpuid faulting */
-XEN_CPUFEATURE(CLFLUSH_MONITOR, (FSCAPINTS+0)*32+ 7) /* clflush reqd with
monitor */
-XEN_CPUFEATURE(APERFMPERF, (FSCAPINTS+0)*32+ 8) /* APERFMPERF */
-XEN_CPUFEATURE(MFENCE_RDTSC, (FSCAPINTS+0)*32+ 9) /* MFENCE synchronizes
RDTSC */
-XEN_CPUFEATURE(XEN_SMEP, (FSCAPINTS+0)*32+10) /* SMEP gets used by Xen
itself */
-XEN_CPUFEATURE(XEN_SMAP, (FSCAPINTS+0)*32+11) /* SMAP gets used by Xen
itself */
-XEN_CPUFEATURE(LFENCE_DISPATCH, (FSCAPINTS+0)*32+12) /* lfence set as Dispatch
Serialising */
-XEN_CPUFEATURE(IND_THUNK_LFENCE,(FSCAPINTS+0)*32+13) /* Use IND_THUNK_LFENCE */
-XEN_CPUFEATURE(IND_THUNK_JMP, (FSCAPINTS+0)*32+14) /* Use IND_THUNK_JMP */
-XEN_CPUFEATURE(SC_L1TF_VULN, (FSCAPINTS+0)*32+15) /* L1TF protection
required */
-XEN_CPUFEATURE(SC_MSR_PV, (FSCAPINTS+0)*32+16) /* MSR_SPEC_CTRL used by
Xen for PV */
-XEN_CPUFEATURE(SC_MSR_HVM, (FSCAPINTS+0)*32+17) /* MSR_SPEC_CTRL used by
Xen for HVM */
-XEN_CPUFEATURE(SC_RSB_PV, (FSCAPINTS+0)*32+18) /* RSB overwrite needed
for PV */
-XEN_CPUFEATURE(SC_RSB_HVM, (FSCAPINTS+0)*32+19) /* RSB overwrite needed
for HVM */
-XEN_CPUFEATURE(XEN_SELFSNOOP, (FSCAPINTS+0)*32+20) /* SELFSNOOP gets used by
Xen itself */
-XEN_CPUFEATURE(SC_MSR_IDLE, (FSCAPINTS+0)*32+21) /* (SC_MSR_PV ||
SC_MSR_HVM) && default_xen_spec_ctrl */
-XEN_CPUFEATURE(XEN_LBR, (FSCAPINTS+0)*32+22) /* Xen uses
MSR_DEBUGCTL.LBR */
-XEN_CPUFEATURE(SC_VERW_PV, (FSCAPINTS+0)*32+23) /* VERW used by Xen for
PV */
-XEN_CPUFEATURE(SC_VERW_HVM, (FSCAPINTS+0)*32+24) /* VERW used by Xen for
HVM */
-XEN_CPUFEATURE(SC_VERW_IDLE, (FSCAPINTS+0)*32+25) /* VERW used by Xen for
idle */
+/* Synthetic features */
+XEN_CPUFEATURE(CONSTANT_TSC, X86_SYNTH( 0)) /* TSC ticks at a constant
rate */
+XEN_CPUFEATURE(NONSTOP_TSC, X86_SYNTH( 1)) /* TSC does not stop in C
states */
+XEN_CPUFEATURE(ARAT, X86_SYNTH( 2)) /* Always running APIC timer
*/
+XEN_CPUFEATURE(ARCH_PERFMON, X86_SYNTH( 3)) /* Intel Architectural
PerfMon */
+XEN_CPUFEATURE(TSC_RELIABLE, X86_SYNTH( 4)) /* TSC is known to be
reliable */
+XEN_CPUFEATURE(XTOPOLOGY, X86_SYNTH( 5)) /* cpu topology enum
extensions */
+XEN_CPUFEATURE(CPUID_FAULTING, X86_SYNTH( 6)) /* cpuid faulting */
+XEN_CPUFEATURE(CLFLUSH_MONITOR, X86_SYNTH( 7)) /* clflush reqd with monitor
*/
+XEN_CPUFEATURE(APERFMPERF, X86_SYNTH( 8)) /* APERFMPERF */
+XEN_CPUFEATURE(MFENCE_RDTSC, X86_SYNTH( 9)) /* MFENCE synchronizes RDTSC
*/
+XEN_CPUFEATURE(XEN_SMEP, X86_SYNTH(10)) /* SMEP gets used by Xen
itself */
+XEN_CPUFEATURE(XEN_SMAP, X86_SYNTH(11)) /* SMAP gets used by Xen
itself */
+XEN_CPUFEATURE(LFENCE_DISPATCH, X86_SYNTH(12)) /* lfence set as Dispatch
Serialising */
+XEN_CPUFEATURE(IND_THUNK_LFENCE, X86_SYNTH(13)) /* Use IND_THUNK_LFENCE */
+XEN_CPUFEATURE(IND_THUNK_JMP, X86_SYNTH(14)) /* Use IND_THUNK_JMP */
+XEN_CPUFEATURE(SC_L1TF_VULN, X86_SYNTH(15)) /* L1TF protection required */
+XEN_CPUFEATURE(SC_MSR_PV, X86_SYNTH(16)) /* MSR_SPEC_CTRL used by Xen
for PV */
+XEN_CPUFEATURE(SC_MSR_HVM, X86_SYNTH(17)) /* MSR_SPEC_CTRL used by Xen
for HVM */
+XEN_CPUFEATURE(SC_RSB_PV, X86_SYNTH(18)) /* RSB overwrite needed for
PV */
+XEN_CPUFEATURE(SC_RSB_HVM, X86_SYNTH(19)) /* RSB overwrite needed for
HVM */
+XEN_CPUFEATURE(XEN_SELFSNOOP, X86_SYNTH(20)) /* SELFSNOOP gets used by Xen
itself */
+XEN_CPUFEATURE(SC_MSR_IDLE, X86_SYNTH(21)) /* (SC_MSR_PV || SC_MSR_HVM)
&& default_xen_spec_ctrl */
+XEN_CPUFEATURE(XEN_LBR, X86_SYNTH(22)) /* Xen uses MSR_DEBUGCTL.LBR
*/
+XEN_CPUFEATURE(SC_VERW_PV, X86_SYNTH(23)) /* VERW used by Xen for PV */
+XEN_CPUFEATURE(SC_VERW_HVM, X86_SYNTH(24)) /* VERW used by Xen for HVM */
+XEN_CPUFEATURE(SC_VERW_IDLE, X86_SYNTH(25)) /* VERW used by Xen for idle
*/
+
+/* Bug words follow the synthetic words. */
+#define X86_NR_BUG 1
+#define X86_BUG(x) ((FSCAPINTS + X86_NR_SYNTH) * 32 + (x))
+
+/* Total number of capability words, inc synth and bug words. */
+#define NCAPINTS (FSCAPINTS + X86_NR_SYNTH + X86_NR_BUG) /* N 32-bit words
worth of info */
--
generated by git-patchbot for /home/xen/git/xen.git#staging
_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/xen-changelog
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |