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charset="utf-8" From: Tu Dinh Expose ARCH_LBR feature to guests. Extend CPU featureset with 3 words for CPUID leaf 0x1c. Signed-off-by: Tu Dinh --- tools/libs/guest/xg_cpuid_x86.c | 2 +- tools/misc/xen-cpuid.c | 3 ++ xen/arch/x86/cpu-policy.c | 3 ++ xen/arch/x86/cpu/common.c | 7 ++++ xen/include/public/arch-x86/cpufeatureset.h | 28 ++++++++++++++- xen/include/xen/lib/x86/cpu-policy.h | 38 ++++++++++++++++++++- xen/lib/x86/cpuid.c | 6 ++++ 7 files changed, 84 insertions(+), 3 deletions(-) diff --git a/tools/libs/guest/xg_cpuid_x86.c b/tools/libs/guest/xg_cpuid_x8= 6.c index 4453178100..64d9baa538 100644 --- a/tools/libs/guest/xg_cpuid_x86.c +++ b/tools/libs/guest/xg_cpuid_x86.c @@ -656,7 +656,7 @@ int xc_cpuid_apply_policy(xc_interface *xch, uint32_t d= omid, bool restore, p->policy.feat.mpx =3D test_bit(X86_FEATURE_MPX, host_features= et); } =20 - p->policy.basic.max_leaf =3D min(p->policy.basic.max_leaf, 0xdu); + p->policy.basic.max_leaf =3D min(p->policy.basic.max_leaf, 0x1cu); p->policy.feat.max_subleaf =3D 0; p->policy.extd.max_leaf =3D min(p->policy.extd.max_leaf, 0x8000001= c); } diff --git a/tools/misc/xen-cpuid.c b/tools/misc/xen-cpuid.c index 4c4593528d..4f0fb0a6ea 100644 --- a/tools/misc/xen-cpuid.c +++ b/tools/misc/xen-cpuid.c @@ -37,6 +37,9 @@ static const struct { { "CPUID 0x00000007:1.edx", "7d1" }, { "MSR_ARCH_CAPS.lo", "m10Al" }, { "MSR_ARCH_CAPS.hi", "m10Ah" }, + { "CPUID 0x0000001c.eax", "1Ca" }, + { "CPUID 0x0000001c.ebx", "1Cb" }, + { "CPUID 0x0000001c.ecx", "1Cc" }, }; =20 #define COL_ALIGN "24" diff --git a/xen/arch/x86/cpu-policy.c b/xen/arch/x86/cpu-policy.c index 78bc9872b0..cf6b212fb6 100644 --- a/xen/arch/x86/cpu-policy.c +++ b/xen/arch/x86/cpu-policy.c @@ -271,6 +271,8 @@ static void recalculate_misc(struct cpu_policy *p) =20 p->basic.raw[0xc] =3D EMPTY_LEAF; =20 + zero_leaves(p->basic.raw, 0xe, 0x1b); + p->extd.e1d &=3D ~CPUID_COMMON_1D_FEATURES; =20 /* Most of Power/RAS hidden from guests. */ @@ -303,6 +305,7 @@ static void recalculate_misc(struct cpu_policy *p) zero_leaves(p->basic.raw, 0x2, 0x3); memset(p->cache.raw, 0, sizeof(p->cache.raw)); zero_leaves(p->basic.raw, 0x9, 0xa); + p->basic.raw[0x1c] =3D EMPTY_LEAF; =20 p->extd.vendor_ebx =3D p->basic.vendor_ebx; p->extd.vendor_ecx =3D p->basic.vendor_ecx; diff --git a/xen/arch/x86/cpu/common.c b/xen/arch/x86/cpu/common.c index 067d855bad..4c8eb188e9 100644 --- a/xen/arch/x86/cpu/common.c +++ b/xen/arch/x86/cpu/common.c @@ -505,6 +505,13 @@ static void generic_identify(struct cpuinfo_x86 *c) &c->x86_capability[FEATURESET_Da1], &tmp, &tmp, &tmp); =20 + if (c->cpuid_level >=3D 0x1c) + cpuid(0x1c, + &c->x86_capability[FEATURESET_1Ca], + &c->x86_capability[FEATURESET_1Cb], + &c->x86_capability[FEATURESET_1Cc], + &tmp); + if (test_bit(X86_FEATURE_ARCH_CAPS, c->x86_capability)) rdmsr(MSR_ARCH_CAPABILITIES, c->x86_capability[FEATURESET_m10Al], diff --git a/xen/include/public/arch-x86/cpufeatureset.h b/xen/include/publ= ic/arch-x86/cpufeatureset.h index 8fa3fb711a..9304856fba 100644 --- a/xen/include/public/arch-x86/cpufeatureset.h +++ b/xen/include/public/arch-x86/cpufeatureset.h @@ -284,7 +284,7 @@ XEN_CPUFEATURE(SERIALIZE, 9*32+14) /*A SERIALIZE i= nsn */ XEN_CPUFEATURE(HYBRID, 9*32+15) /* Heterogeneous platform */ XEN_CPUFEATURE(TSXLDTRK, 9*32+16) /*a TSX load tracking suspend/resu= me insns */ XEN_CPUFEATURE(PCONFIG, 9*32+18) /* PCONFIG instruction */ -XEN_CPUFEATURE(ARCH_LBR, 9*32+19) /* Architectural Last Branch Reco= rd */ +XEN_CPUFEATURE(ARCH_LBR, 9*32+19) /*S Architectural Last Branch Reco= rd */ XEN_CPUFEATURE(CET_IBT, 9*32+20) /* CET - Indirect Branch Tracking= */ XEN_CPUFEATURE(AMX_BF16, 9*32+22) /* AMX BFloat16 instruction */ XEN_CPUFEATURE(AVX512_FP16, 9*32+23) /*A AVX512 FP16 instructions */ @@ -379,6 +379,32 @@ XEN_CPUFEATURE(RFDS_CLEAR, 16*32+28) /*!A| Reg= ister File(s) cleared by V =20 /* Intel-defined CPU features, MSR_ARCH_CAPS 0x10a.edx, word 17 */ =20 +/* Intel-defined CPU features, CPUID level 0x0000001c.eax, word 18 */ +XEN_CPUFEATURE(LBR_DEPTH_8, 18*32+ 0) /*S Depth 8 */ +XEN_CPUFEATURE(LBR_DEPTH_16, 18*32+ 1) /*S Depth 16 */ +XEN_CPUFEATURE(LBR_DEPTH_24, 18*32+ 2) /*S Depth 24 */ +XEN_CPUFEATURE(LBR_DEPTH_32, 18*32+ 3) /*S Depth 32 */ +XEN_CPUFEATURE(LBR_DEPTH_40, 18*32+ 4) /*S Depth 40 */ +XEN_CPUFEATURE(LBR_DEPTH_48, 18*32+ 5) /*S Depth 48 */ +XEN_CPUFEATURE(LBR_DEPTH_56, 18*32+ 6) /*S Depth 56 */ +XEN_CPUFEATURE(LBR_DEPTH_64, 18*32+ 7) /*S Depth 64 */ +XEN_CPUFEATURE(LBR_DCST_RST, 18*32+30) /*S Deep C-state reset */ +XEN_CPUFEATURE(LBR_LIP, 18*32+31) /*S IP is linear IP */ + +/* Intel-defined CPU features, CPUID level 0x0000001c.ebx, word 19 */ +XEN_CPUFEATURE(LBR_CPL_FILTER, 19*32+ 0) /*S CPL filtering */ +XEN_CPUFEATURE(LBR_BR_FILTER, 19*32+ 1) /*S Branch filtering */ +XEN_CPUFEATURE(LBR_CALL_STACK_MODE, 19*32+ 2) /*S Call stack mode */ + +/* Intel-defined CPU features, CPUID level 0x0000001c.ecx, word 20 */ +XEN_CPUFEATURE(LBR_MISPRED, 20*32+ 0) /*S Mispredict mode */ +XEN_CPUFEATURE(LBR_TIMED, 20*32+ 1) /*S Timed mode */ +XEN_CPUFEATURE(LBR_BR_TYPE, 20*32+ 2) /*S Branch type */ +XEN_CPUFEATURE(LBR_EVT_FMT0, 20*32+16) /*!S Event type format bit 0 = */ +XEN_CPUFEATURE(LBR_EVT_FMT1, 20*32+17) /*!S Event type format bit 1 = */ +XEN_CPUFEATURE(LBR_EVT_FMT2, 20*32+18) /*!S Event type format bit 2 = */ +XEN_CPUFEATURE(LBR_EVT_FMT3, 20*32+19) /*!S Event type format bit 3 = */ + #endif /* XEN_CPUFEATURE */ =20 /* Clean up from a default include. Close the enum (for C). */ diff --git a/xen/include/xen/lib/x86/cpu-policy.h b/xen/include/xen/lib/x86= /cpu-policy.h index f43e1a3b21..afd66b4158 100644 --- a/xen/include/xen/lib/x86/cpu-policy.h +++ b/xen/include/xen/lib/x86/cpu-policy.h @@ -22,6 +22,9 @@ #define FEATURESET_7d1 15 /* 0x00000007:1.edx */ #define FEATURESET_m10Al 16 /* 0x0000010a.eax */ #define FEATURESET_m10Ah 17 /* 0x0000010a.edx */ +#define FEATURESET_1Ca 18 /* 0x0000001c.eax */ +#define FEATURESET_1Cb 19 /* 0x0000001c.ebx */ +#define FEATURESET_1Cc 20 /* 0x0000001c.ecx */ =20 struct cpuid_leaf { @@ -85,7 +88,7 @@ unsigned int x86_cpuid_lookup_vendor(uint32_t ebx, uint32= _t ecx, uint32_t edx); */ const char *x86_cpuid_vendor_to_str(unsigned int vendor); =20 -#define CPUID_GUEST_NR_BASIC (0xdu + 1) +#define CPUID_GUEST_NR_BASIC (0x1cu + 1) #define CPUID_GUEST_NR_CACHE (5u + 1) #define CPUID_GUEST_NR_FEAT (2u + 1) #define CPUID_GUEST_NR_TOPO (1u + 1) @@ -158,6 +161,39 @@ struct cpu_policy uint64_t :64, :64; /* Leaf 0xb - Topology. */ uint64_t :64, :64; /* Leaf 0xc - rsvd */ uint64_t :64, :64; /* Leaf 0xd - XSTATE. */ + + uint64_t :64, :64; /* Leaf 0xe - rsvd */ + uint64_t :64, :64; /* Leaf 0xf - rsvd */ + uint64_t :64, :64; /* Leaf 0x10 - rsvd */ + uint64_t :64, :64; /* Leaf 0x11 - rsvd */ + uint64_t :64, :64; /* Leaf 0x12 - rsvd */ + uint64_t :64, :64; /* Leaf 0x13 - rsvd */ + uint64_t :64, :64; /* Leaf 0x14 - rsvd */ + uint64_t :64, :64; /* Leaf 0x15 - rsvd */ + uint64_t :64, :64; /* Leaf 0x16 - rsvd */ + uint64_t :64, :64; /* Leaf 0x17 - rsvd */ + uint64_t :64, :64; /* Leaf 0x18 - rsvd */ + uint64_t :64, :64; /* Leaf 0x19 - rsvd */ + uint64_t :64, :64; /* Leaf 0x1a - rsvd */ + uint64_t :64, :64; /* Leaf 0x1b - rsvd */ + + union { + uint32_t _1Ca; + struct { + uint32_t supported_depths:8; + uint32_t :22; + uint32_t deep_cstate_reset:1; + uint32_t ip_contains_lip:1; + }; + }; + union { + uint32_t _1Cb; + struct { DECL_BITFIELD(1Cb); }; + }; + union { + uint32_t _1Cc; + struct { DECL_BITFIELD(1Cc); }; + }; }; } basic; =20 diff --git a/xen/lib/x86/cpuid.c b/xen/lib/x86/cpuid.c index eb7698dc73..4d19349b17 100644 --- a/xen/lib/x86/cpuid.c +++ b/xen/lib/x86/cpuid.c @@ -81,6 +81,9 @@ void x86_cpu_policy_to_featureset( fs[FEATURESET_7d1] =3D p->feat._7d1; fs[FEATURESET_m10Al] =3D p->arch_caps.lo; fs[FEATURESET_m10Ah] =3D p->arch_caps.hi; + fs[FEATURESET_1Ca] =3D p->basic._1Ca; + fs[FEATURESET_1Cb] =3D p->basic._1Cb; + fs[FEATURESET_1Cc] =3D p->basic._1Cc; } =20 void x86_cpu_featureset_to_policy( @@ -104,6 +107,9 @@ void x86_cpu_featureset_to_policy( p->feat._7d1 =3D fs[FEATURESET_7d1]; p->arch_caps.lo =3D fs[FEATURESET_m10Al]; p->arch_caps.hi =3D fs[FEATURESET_m10Ah]; + p->basic._1Ca =3D fs[FEATURESET_1Ca]; + p->basic._1Cb =3D fs[FEATURESET_1Cb]; + p->basic._1Cc =3D fs[FEATURESET_1Cc]; } =20 void x86_cpu_policy_recalc_synth(struct cpu_policy *p) --=20 2.43.0 Ngoc Tu Dinh | Vates XCP-ng Developer XCP-ng & Xen Orchestra - Vates solutions web: https://vates.tech