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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 2/5] x86: split out cpuid objects and helpers
They are moved to a new header which is going to be consumed by both
the hypervisor and toolstack.
Create a new directory for this kind of headers in anticipation of
more will come.
No functional change.
Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Any suggestion on the directory name?
---
xen/include/asm-x86/arch-shared/cpuid.h | 213 ++++++++++++++++++++++++++++++++
xen/include/asm-x86/cpuid.h | 210 +------------------------------
2 files changed, 215 insertions(+), 208 deletions(-)
create mode 100644 xen/include/asm-x86/arch-shared/cpuid.h
diff --git a/xen/include/asm-x86/arch-shared/cpuid.h
b/xen/include/asm-x86/arch-shared/cpuid.h
new file mode 100644
index 0000000000..5c049e11a6
--- /dev/null
+++ b/xen/include/asm-x86/arch-shared/cpuid.h
@@ -0,0 +1,213 @@
+/* Common data structures and functions consumed by hypervisor and toolstack */
+#ifndef __X86_CPUID_SHARED_H__
+#define __X86_CPUID_SHARED_H__
+
+#define FEATURESET_1d 0 /* 0x00000001.edx */
+#define FEATURESET_1c 1 /* 0x00000001.ecx */
+#define FEATURESET_e1d 2 /* 0x80000001.edx */
+#define FEATURESET_e1c 3 /* 0x80000001.ecx */
+#define FEATURESET_Da1 4 /* 0x0000000d:1.eax */
+#define FEATURESET_7b0 5 /* 0x00000007:0.ebx */
+#define FEATURESET_7c0 6 /* 0x00000007:0.ecx */
+#define FEATURESET_e7d 7 /* 0x80000007.edx */
+#define FEATURESET_e8b 8 /* 0x80000008.ebx */
+#define FEATURESET_7d0 9 /* 0x00000007:0.edx */
+
+
+#define CPUID_GUEST_NR_BASIC (0xdu + 1)
+#define CPUID_GUEST_NR_FEAT (0u + 1)
+#define CPUID_GUEST_NR_CACHE (5u + 1)
+#define CPUID_GUEST_NR_XSTATE (62u + 1)
+#define CPUID_GUEST_NR_EXTD_INTEL (0x8u + 1)
+#define CPUID_GUEST_NR_EXTD_AMD (0x1cu + 1)
+#define CPUID_GUEST_NR_EXTD MAX(CPUID_GUEST_NR_EXTD_INTEL, \
+ CPUID_GUEST_NR_EXTD_AMD)
+struct cpuid_leaf
+{
+ uint32_t a, b, c, d;
+};
+
+struct cpuid_policy
+{
+#define DECL_BITFIELD(word) _DECL_BITFIELD(FEATURESET_ ## word)
+#define _DECL_BITFIELD(x) __DECL_BITFIELD(x)
+#define __DECL_BITFIELD(x) CPUID_BITFIELD_ ## x
+
+ /* Basic leaves: 0x000000xx */
+ union {
+ struct cpuid_leaf raw[CPUID_GUEST_NR_BASIC];
+ struct {
+ /* Leaf 0x0 - Max and vendor. */
+ uint32_t max_leaf, vendor_ebx, vendor_ecx, vendor_edx;
+
+ /* Leaf 0x1 - Family/model/stepping and features. */
+ uint32_t raw_fms;
+ uint8_t :8, /* Brand ID. */
+ clflush_size, /* Number of 8-byte blocks per cache line. */
+ lppp, /* Logical processors per package. */
+ apic_id; /* Initial APIC ID. */
+ union {
+ uint32_t _1c;
+ struct { DECL_BITFIELD(1c); };
+ };
+ union {
+ uint32_t _1d;
+ struct { DECL_BITFIELD(1d); };
+ };
+
+ /* Leaf 0x2 - TLB/Cache/Prefetch. */
+ uint8_t l2_nr_queries; /* Documented as fixed to 1. */
+ uint8_t l2_desc[15];
+
+ uint64_t :64, :64; /* Leaf 0x3 - PSN. */
+ uint64_t :64, :64; /* Leaf 0x4 - Structured Cache. */
+ uint64_t :64, :64; /* Leaf 0x5 - MONITOR. */
+ uint64_t :64, :64; /* Leaf 0x6 - Therm/Perf. */
+ uint64_t :64, :64; /* Leaf 0x7 - Structured Features. */
+ uint64_t :64, :64; /* Leaf 0x8 - rsvd */
+ uint64_t :64, :64; /* Leaf 0x9 - DCA */
+
+ /* Leaf 0xa - Intel PMU. */
+ uint8_t pmu_version;
+ };
+ } basic;
+
+ /* Structured cache leaf: 0x00000004[xx] */
+ union {
+ struct cpuid_leaf raw[CPUID_GUEST_NR_CACHE];
+ struct cpuid_cache_leaf {
+ uint32_t type:5,
+ :27, :32, :32, :32;
+ } subleaf[CPUID_GUEST_NR_CACHE];
+ } cache;
+
+ /* Structured feature leaf: 0x00000007[xx] */
+ union {
+ struct cpuid_leaf raw[CPUID_GUEST_NR_FEAT];
+ struct {
+ /* Subleaf 0. */
+ uint32_t max_subleaf;
+ union {
+ uint32_t _7b0;
+ struct { DECL_BITFIELD(7b0); };
+ };
+ union {
+ uint32_t _7c0;
+ struct { DECL_BITFIELD(7c0); };
+ };
+ union {
+ uint32_t _7d0;
+ struct { DECL_BITFIELD(7d0); };
+ };
+ };
+ } feat;
+
+ /* Xstate feature leaf: 0x0000000D[xx] */
+ union {
+ struct cpuid_leaf raw[CPUID_GUEST_NR_XSTATE];
+
+ struct {
+ /* Subleaf 0. */
+ uint32_t xcr0_low, /* b */:32, max_size, xcr0_high;
+
+ /* Subleaf 1. */
+ union {
+ uint32_t Da1;
+ struct { DECL_BITFIELD(Da1); };
+ };
+ uint32_t /* b */:32, xss_low, xss_high;
+ };
+
+ /* Per-component common state. Valid for i >= 2. */
+ struct {
+ uint32_t size, offset;
+ bool xss:1, align:1;
+ uint32_t _res_d;
+ } comp[CPUID_GUEST_NR_XSTATE];
+ } xstate;
+
+ /* Extended leaves: 0x800000xx */
+ union {
+ struct cpuid_leaf raw[CPUID_GUEST_NR_EXTD];
+ struct {
+ /* Leaf 0x80000000 - Max and vendor. */
+ uint32_t max_leaf, vendor_ebx, vendor_ecx, vendor_edx;
+
+ /* Leaf 0x80000001 - Family/model/stepping and features. */
+ uint32_t raw_fms, /* b */:32;
+ union {
+ uint32_t e1c;
+ struct { DECL_BITFIELD(e1c); };
+ };
+ union {
+ uint32_t e1d;
+ struct { DECL_BITFIELD(e1d); };
+ };
+
+ uint64_t :64, :64; /* Brand string. */
+ uint64_t :64, :64; /* Brand string. */
+ uint64_t :64, :64; /* Brand string. */
+ uint64_t :64, :64; /* L1 cache/TLB. */
+ uint64_t :64, :64; /* L2/3 cache/TLB. */
+
+ /* Leaf 0x80000007 - Advanced Power Management. */
+ uint32_t /* a */:32, /* b */:32, /* c */:32;
+ union {
+ uint32_t e7d;
+ struct { DECL_BITFIELD(e7d); };
+ };
+
+ /* Leaf 0x80000008 - Misc addr/feature info. */
+ uint8_t maxphysaddr, maxlinaddr, :8, :8;
+ union {
+ uint32_t e8b;
+ struct { DECL_BITFIELD(e8b); };
+ };
+ uint32_t /* c */:32, /* d */:32;
+ };
+ } extd;
+
+#undef __DECL_BITFIELD
+#undef _DECL_BITFIELD
+#undef DECL_BITFIELD
+
+ /* Toolstack selected Hypervisor max_leaf (if non-zero). */
+ uint8_t hv_limit, hv2_limit;
+
+ /* Value calculated from raw data above. */
+ uint8_t x86_vendor;
+};
+
+/* Fill in a featureset bitmap from a CPUID policy. */
+static inline void cpuid_policy_to_featureset(
+ const struct cpuid_policy *p, uint32_t fs[FSCAPINTS])
+{
+ fs[FEATURESET_1d] = p->basic._1d;
+ fs[FEATURESET_1c] = p->basic._1c;
+ fs[FEATURESET_e1d] = p->extd.e1d;
+ fs[FEATURESET_e1c] = p->extd.e1c;
+ fs[FEATURESET_Da1] = p->xstate.Da1;
+ fs[FEATURESET_7b0] = p->feat._7b0;
+ fs[FEATURESET_7c0] = p->feat._7c0;
+ fs[FEATURESET_e7d] = p->extd.e7d;
+ fs[FEATURESET_e8b] = p->extd.e8b;
+ fs[FEATURESET_7d0] = p->feat._7d0;
+}
+
+/* Fill in a CPUID policy from a featureset bitmap. */
+static inline void cpuid_featureset_to_policy(
+ const uint32_t fs[FSCAPINTS], struct cpuid_policy *p)
+{
+ p->basic._1d = fs[FEATURESET_1d];
+ p->basic._1c = fs[FEATURESET_1c];
+ p->extd.e1d = fs[FEATURESET_e1d];
+ p->extd.e1c = fs[FEATURESET_e1c];
+ p->xstate.Da1 = fs[FEATURESET_Da1];
+ p->feat._7b0 = fs[FEATURESET_7b0];
+ p->feat._7c0 = fs[FEATURESET_7c0];
+ p->extd.e7d = fs[FEATURESET_e7d];
+ p->extd.e8b = fs[FEATURESET_e8b];
+ p->feat._7d0 = fs[FEATURESET_7d0];
+}
+
+#endif /* __X86_CPUID_SHARED_H__ */
diff --git a/xen/include/asm-x86/cpuid.h b/xen/include/asm-x86/cpuid.h
index ca664d50e2..970c5a2161 100644
--- a/xen/include/asm-x86/cpuid.h
+++ b/xen/include/asm-x86/cpuid.h
@@ -4,17 +4,6 @@
#include <asm/cpufeatureset.h>
#include <asm/percpu.h>
-#define FEATURESET_1d 0 /* 0x00000001.edx */
-#define FEATURESET_1c 1 /* 0x00000001.ecx */
-#define FEATURESET_e1d 2 /* 0x80000001.edx */
-#define FEATURESET_e1c 3 /* 0x80000001.ecx */
-#define FEATURESET_Da1 4 /* 0x0000000d:1.eax */
-#define FEATURESET_7b0 5 /* 0x00000007:0.ebx */
-#define FEATURESET_7c0 6 /* 0x00000007:0.ecx */
-#define FEATURESET_e7d 7 /* 0x80000007.edx */
-#define FEATURESET_e8b 8 /* 0x80000008.ebx */
-#define FEATURESET_7d0 9 /* 0x00000007:0.edx */
-
#ifndef __ASSEMBLY__
#include <xen/types.h>
#include <xen/kernel.h>
@@ -55,205 +44,10 @@ struct cpuidmasks
/* Per CPU shadows of masking MSR values, for lazy context switching. */
DECLARE_PER_CPU(struct cpuidmasks, cpuidmasks);
+#include "arch-shared/cpuid.h"
+
/* Default masking MSR values, calculated at boot. */
extern struct cpuidmasks cpuidmask_defaults;
-
-#define CPUID_GUEST_NR_BASIC (0xdu + 1)
-#define CPUID_GUEST_NR_FEAT (0u + 1)
-#define CPUID_GUEST_NR_CACHE (5u + 1)
-#define CPUID_GUEST_NR_XSTATE (62u + 1)
-#define CPUID_GUEST_NR_EXTD_INTEL (0x8u + 1)
-#define CPUID_GUEST_NR_EXTD_AMD (0x1cu + 1)
-#define CPUID_GUEST_NR_EXTD MAX(CPUID_GUEST_NR_EXTD_INTEL, \
- CPUID_GUEST_NR_EXTD_AMD)
-struct cpuid_leaf
-{
- uint32_t a, b, c, d;
-};
-
-struct cpuid_policy
-{
-#define DECL_BITFIELD(word) _DECL_BITFIELD(FEATURESET_ ## word)
-#define _DECL_BITFIELD(x) __DECL_BITFIELD(x)
-#define __DECL_BITFIELD(x) CPUID_BITFIELD_ ## x
-
- /* Basic leaves: 0x000000xx */
- union {
- struct cpuid_leaf raw[CPUID_GUEST_NR_BASIC];
- struct {
- /* Leaf 0x0 - Max and vendor. */
- uint32_t max_leaf, vendor_ebx, vendor_ecx, vendor_edx;
-
- /* Leaf 0x1 - Family/model/stepping and features. */
- uint32_t raw_fms;
- uint8_t :8, /* Brand ID. */
- clflush_size, /* Number of 8-byte blocks per cache line. */
- lppp, /* Logical processors per package. */
- apic_id; /* Initial APIC ID. */
- union {
- uint32_t _1c;
- struct { DECL_BITFIELD(1c); };
- };
- union {
- uint32_t _1d;
- struct { DECL_BITFIELD(1d); };
- };
-
- /* Leaf 0x2 - TLB/Cache/Prefetch. */
- uint8_t l2_nr_queries; /* Documented as fixed to 1. */
- uint8_t l2_desc[15];
-
- uint64_t :64, :64; /* Leaf 0x3 - PSN. */
- uint64_t :64, :64; /* Leaf 0x4 - Structured Cache. */
- uint64_t :64, :64; /* Leaf 0x5 - MONITOR. */
- uint64_t :64, :64; /* Leaf 0x6 - Therm/Perf. */
- uint64_t :64, :64; /* Leaf 0x7 - Structured Features. */
- uint64_t :64, :64; /* Leaf 0x8 - rsvd */
- uint64_t :64, :64; /* Leaf 0x9 - DCA */
-
- /* Leaf 0xa - Intel PMU. */
- uint8_t pmu_version;
- };
- } basic;
-
- /* Structured cache leaf: 0x00000004[xx] */
- union {
- struct cpuid_leaf raw[CPUID_GUEST_NR_CACHE];
- struct cpuid_cache_leaf {
- uint32_t type:5,
- :27, :32, :32, :32;
- } subleaf[CPUID_GUEST_NR_CACHE];
- } cache;
-
- /* Structured feature leaf: 0x00000007[xx] */
- union {
- struct cpuid_leaf raw[CPUID_GUEST_NR_FEAT];
- struct {
- /* Subleaf 0. */
- uint32_t max_subleaf;
- union {
- uint32_t _7b0;
- struct { DECL_BITFIELD(7b0); };
- };
- union {
- uint32_t _7c0;
- struct { DECL_BITFIELD(7c0); };
- };
- union {
- uint32_t _7d0;
- struct { DECL_BITFIELD(7d0); };
- };
- };
- } feat;
-
- /* Xstate feature leaf: 0x0000000D[xx] */
- union {
- struct cpuid_leaf raw[CPUID_GUEST_NR_XSTATE];
-
- struct {
- /* Subleaf 0. */
- uint32_t xcr0_low, /* b */:32, max_size, xcr0_high;
-
- /* Subleaf 1. */
- union {
- uint32_t Da1;
- struct { DECL_BITFIELD(Da1); };
- };
- uint32_t /* b */:32, xss_low, xss_high;
- };
-
- /* Per-component common state. Valid for i >= 2. */
- struct {
- uint32_t size, offset;
- bool xss:1, align:1;
- uint32_t _res_d;
- } comp[CPUID_GUEST_NR_XSTATE];
- } xstate;
-
- /* Extended leaves: 0x800000xx */
- union {
- struct cpuid_leaf raw[CPUID_GUEST_NR_EXTD];
- struct {
- /* Leaf 0x80000000 - Max and vendor. */
- uint32_t max_leaf, vendor_ebx, vendor_ecx, vendor_edx;
-
- /* Leaf 0x80000001 - Family/model/stepping and features. */
- uint32_t raw_fms, /* b */:32;
- union {
- uint32_t e1c;
- struct { DECL_BITFIELD(e1c); };
- };
- union {
- uint32_t e1d;
- struct { DECL_BITFIELD(e1d); };
- };
-
- uint64_t :64, :64; /* Brand string. */
- uint64_t :64, :64; /* Brand string. */
- uint64_t :64, :64; /* Brand string. */
- uint64_t :64, :64; /* L1 cache/TLB. */
- uint64_t :64, :64; /* L2/3 cache/TLB. */
-
- /* Leaf 0x80000007 - Advanced Power Management. */
- uint32_t /* a */:32, /* b */:32, /* c */:32;
- union {
- uint32_t e7d;
- struct { DECL_BITFIELD(e7d); };
- };
-
- /* Leaf 0x80000008 - Misc addr/feature info. */
- uint8_t maxphysaddr, maxlinaddr, :8, :8;
- union {
- uint32_t e8b;
- struct { DECL_BITFIELD(e8b); };
- };
- uint32_t /* c */:32, /* d */:32;
- };
- } extd;
-
-#undef __DECL_BITFIELD
-#undef _DECL_BITFIELD
-#undef DECL_BITFIELD
-
- /* Toolstack selected Hypervisor max_leaf (if non-zero). */
- uint8_t hv_limit, hv2_limit;
-
- /* Value calculated from raw data above. */
- uint8_t x86_vendor;
-};
-
-/* Fill in a featureset bitmap from a CPUID policy. */
-static inline void cpuid_policy_to_featureset(
- const struct cpuid_policy *p, uint32_t fs[FSCAPINTS])
-{
- fs[FEATURESET_1d] = p->basic._1d;
- fs[FEATURESET_1c] = p->basic._1c;
- fs[FEATURESET_e1d] = p->extd.e1d;
- fs[FEATURESET_e1c] = p->extd.e1c;
- fs[FEATURESET_Da1] = p->xstate.Da1;
- fs[FEATURESET_7b0] = p->feat._7b0;
- fs[FEATURESET_7c0] = p->feat._7c0;
- fs[FEATURESET_e7d] = p->extd.e7d;
- fs[FEATURESET_e8b] = p->extd.e8b;
- fs[FEATURESET_7d0] = p->feat._7d0;
-}
-
-/* Fill in a CPUID policy from a featureset bitmap. */
-static inline void cpuid_featureset_to_policy(
- const uint32_t fs[FSCAPINTS], struct cpuid_policy *p)
-{
- p->basic._1d = fs[FEATURESET_1d];
- p->basic._1c = fs[FEATURESET_1c];
- p->extd.e1d = fs[FEATURESET_e1d];
- p->extd.e1c = fs[FEATURESET_e1c];
- p->xstate.Da1 = fs[FEATURESET_Da1];
- p->feat._7b0 = fs[FEATURESET_7b0];
- p->feat._7c0 = fs[FEATURESET_7c0];
- p->extd.e7d = fs[FEATURESET_e7d];
- p->extd.e8b = fs[FEATURESET_e8b];
- p->feat._7d0 = fs[FEATURESET_7d0];
-}
-
extern struct cpuid_policy raw_cpuid_policy, host_cpuid_policy,
pv_max_cpuid_policy, hvm_max_cpuid_policy;
--
2.11.0
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