#define XEN_LIB_X86_POLICIES_H
#include <xen/lib/x86/cpuid-autogen.h>
-#include <xen/lib/x86/msr.h>
#define FEATURESET_1d 0 /* 0x00000001.edx */
#define FEATURESET_1c 1 /* 0x00000001.ecx */
CPUID_GUEST_NR_XSTATE - !!CPUID_GUEST_NR_XSTATE + \
CPUID_GUEST_NR_EXTD + 2 /* hv_limit and hv2_limit */ )
+/* Maximum number of MSRs written when serialising a cpu_policy. */
+#define MSR_MAX_SERIALISED_ENTRIES 2
+
struct cpu_policy
{
#define DECL_BITFIELD(word) _DECL_BITFIELD(FEATURESET_ ## word)
};
} extd;
+ /*
+ * 0x000000ce - MSR_INTEL_PLATFORM_INFO
+ *
+ * This MSR is non-architectural, but for simplicy we allow it to be read
+ * unconditionally. CPUID Faulting support can be fully emulated for HVM
+ * guests so can be offered unconditionally, while support for PV guests
+ * is dependent on real hardware support.
+ */
+ union {
+ uint32_t raw;
+ struct {
+ uint32_t :31;
+ bool cpuid_faulting:1;
+ };
+ } platform_info;
+
+ /*
+ * 0x0000010a - MSR_ARCH_CAPABILITIES
+ *
+ * This is an Intel-only MSR, which provides miscellaneous enumeration,
+ * including those which indicate that microarchitectrual sidechannels are
+ * fixed in hardware.
+ */
+ union {
+ uint32_t raw;
+ struct {
+ bool rdcl_no:1;
+ bool ibrs_all:1;
+ bool rsba:1;
+ bool skip_l1dfl:1;
+ bool ssb_no:1;
+ bool mds_no:1;
+ bool if_pschange_mc_no:1;
+ bool tsx_ctrl:1;
+ bool taa_no:1;
+ };
+ } arch_caps;
+
#undef __DECL_BITFIELD
#undef _DECL_BITFIELD
#undef DECL_BITFIELD
/* Temporary */
#define cpuid_policy cpu_policy
+#define msr_policy cpu_policy
struct old_cpu_policy
{
#ifdef __XEN__
#include <public/arch-x86/xen.h>
typedef XEN_GUEST_HANDLE_64(xen_cpuid_leaf_t) cpuid_leaf_buffer_t;
+typedef XEN_GUEST_HANDLE_64(xen_msr_entry_t) msr_entry_buffer_t;
#else
#include <xen/arch-x86/xen.h>
typedef xen_cpuid_leaf_t cpuid_leaf_buffer_t[];
+typedef xen_msr_entry_t msr_entry_buffer_t[];
#endif
/**
uint32_t nr_entries, uint32_t *err_leaf,
uint32_t *err_subleaf);
+/**
+ * Serialise an msr_policy object into an array.
+ *
+ * @param policy The msr_policy to serialise.
+ * @param msrs The array of msrs to serialise into.
+ * @param nr_entries The number of entries in 'msrs'.
+ * @returns -errno
+ *
+ * Writes at most MSR_MAX_SERIALISED_ENTRIES. May fail with -ENOBUFS if the
+ * buffer array is too short. On success, nr_entries is updated with the
+ * actual number of msrs written.
+ */
+int x86_msr_copy_to_buffer(const struct msr_policy *policy,
+ msr_entry_buffer_t msrs, uint32_t *nr_entries);
+
+/**
+ * Unserialise an msr_policy object from an array of msrs.
+ *
+ * @param policy The msr_policy object to unserialise into.
+ * @param msrs The array of msrs to unserialise from.
+ * @param nr_entries The number of entries in 'msrs'.
+ * @param err_msr Optional hint for error diagnostics.
+ * @returns -errno
+ *
+ * Reads at most MSR_MAX_SERIALISED_ENTRIES. May fail for a number of reasons
+ * based on the content in an individual 'msrs' entry, including the MSR index
+ * not being valid in the policy, the flags field being nonzero, or if the
+ * value provided would truncate when stored in the policy. In such cases,
+ * the optional err_* pointer will identify the problematic MSR.
+ *
+ * No content validation is performed on the data stored in the policy object.
+ */
+int x86_msr_copy_from_buffer(struct msr_policy *policy,
+ const msr_entry_buffer_t msrs, uint32_t nr_entries,
+ uint32_t *err_msr);
+
/*
* Calculate whether two policies are compatible.
*
+++ /dev/null
-/* Common data structures and functions consumed by hypervisor and toolstack */
-#ifndef XEN_LIB_X86_MSR_H
-#define XEN_LIB_X86_MSR_H
-
-/* Maximum number of MSRs written when serialising msr_policy. */
-#define MSR_MAX_SERIALISED_ENTRIES 2
-
-/* MSR policy object for shared per-domain MSRs */
-struct msr_policy
-{
- /*
- * 0x000000ce - MSR_INTEL_PLATFORM_INFO
- *
- * This MSR is non-architectural, but for simplicy we allow it to be read
- * unconditionally. CPUID Faulting support can be fully emulated for HVM
- * guests so can be offered unconditionally, while support for PV guests
- * is dependent on real hardware support.
- */
- union {
- uint32_t raw;
- struct {
- uint32_t :31;
- bool cpuid_faulting:1;
- };
- } platform_info;
-
- /*
- * 0x0000010a - MSR_ARCH_CAPABILITIES
- *
- * This is an Intel-only MSR, which provides miscellaneous enumeration,
- * including those which indicate that microarchitectrual sidechannels are
- * fixed in hardware.
- */
- union {
- uint32_t raw;
- struct {
- bool rdcl_no:1;
- bool ibrs_all:1;
- bool rsba:1;
- bool skip_l1dfl:1;
- bool ssb_no:1;
- bool mds_no:1;
- bool if_pschange_mc_no:1;
- bool tsx_ctrl:1;
- bool taa_no:1;
- };
- } arch_caps;
-};
-
-#ifdef __XEN__
-#include <public/arch-x86/xen.h>
-typedef XEN_GUEST_HANDLE_64(xen_msr_entry_t) msr_entry_buffer_t;
-#else
-#include <xen/arch-x86/xen.h>
-typedef xen_msr_entry_t msr_entry_buffer_t[];
-#endif
-
-/**
- * Serialise an msr_policy object into an array.
- *
- * @param policy The msr_policy to serialise.
- * @param msrs The array of msrs to serialise into.
- * @param nr_entries The number of entries in 'msrs'.
- * @returns -errno
- *
- * Writes at most MSR_MAX_SERIALISED_ENTRIES. May fail with -ENOBUFS if the
- * buffer array is too short. On success, nr_entries is updated with the
- * actual number of msrs written.
- */
-int x86_msr_copy_to_buffer(const struct msr_policy *policy,
- msr_entry_buffer_t msrs, uint32_t *nr_entries);
-
-/**
- * Unserialise an msr_policy object from an array of msrs.
- *
- * @param policy The msr_policy object to unserialise into.
- * @param msrs The array of msrs to unserialise from.
- * @param nr_entries The number of entries in 'msrs'.
- * @param err_msr Optional hint for error diagnostics.
- * @returns -errno
- *
- * Reads at most MSR_MAX_SERIALISED_ENTRIES. May fail for a number of reasons
- * based on the content in an individual 'msrs' entry, including the MSR index
- * not being valid in the policy, the flags field being nonzero, or if the
- * value provided would truncate when stored in the policy. In such cases,
- * the optional err_* pointer will identify the problematic MSR.
- *
- * No content validation is performed on the data stored in the policy object.
- */
-int x86_msr_copy_from_buffer(struct msr_policy *policy,
- const msr_entry_buffer_t msrs, uint32_t nr_entries,
- uint32_t *err_msr);
-
-#endif /* !XEN_LIB_X86_MSR_H */
-
-/*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 4
- * tab-width: 4
- * indent-tabs-mode: nil
- * End:
- */
projects / xen.git / commitdiff