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xen
xsa435-0-35.patch
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File xsa435-0-35.patch of Package xen
From d9fe459ffad8a6eac2f695adb2331aff83c345d1 Mon Sep 17 00:00:00 2001 From: Andrew Cooper <andrew.cooper3@citrix.com> Date: Fri, 12 May 2023 17:55:21 +0100 Subject: x86/cpu-policy: Infrastructure for MSR_ARCH_CAPS Bits through 24 are already defined, meaning that we're not far off needing the second word. Put both in right away. As both halves are present now, the arch_caps field is full width. Adjust the unit test, which notices. The bool bitfield names in the arch_caps union are unused, and somewhat out of date. They'll shortly be automatically generated. Add CPUID and MSR prefixes to the ./xen-cpuid verbose output, now that there are a mix of the two. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Jan Beulich <jbeulich@suse.com> --- a/tools/misc/xen-cpuid.c +++ b/tools/misc/xen-cpuid.c @@ -202,31 +202,41 @@ static const char *str_7d2[32] = [ 4] = "bhi-ctrl", [ 5] = "mcdt-no", }; +static const char *str_m10Al[32] = +{ +}; + +static const char *str_m10Ah[32] = +{ +}; + static struct { const char *name; const char *abbr; const char **strs; } decodes[] = { - { "0x00000001.edx", "1d", str_1d }, - { "0x00000001.ecx", "1c", str_1c }, - { "0x80000001.edx", "e1d", str_e1d }, - { "0x80000001.ecx", "e1c", str_e1c }, - { "0x0000000d:1.eax", "Da1", str_Da1 }, - { "0x00000007:0.ebx", "7b0", str_7b0 }, - { "0x00000007:0.ecx", "7c0", str_7c0 }, - { "0x80000007.edx", "e7d", str_e7d }, - { "0x80000008.ebx", "e8b", str_e8b }, - { "0x00000007:0.edx", "7d0", str_7d0 }, - { "0x00000007:1.eax", "7a1", str_7a1 }, - { "0x80000021.eax", "e21a", str_e21a }, - { "0x00000007:1.ebx", "7b1", str_7b1 }, - { "0x00000007:2.edx", "7d2", str_7d2 }, - { "0x00000007:1.ecx", "7c1", str_7c1 }, - { "0x00000007:1.edx", "7d1", str_7d1 }, + { "CPUID 0x00000001.edx", "1d", str_1d }, + { "CPUID 0x00000001.ecx", "1c", str_1c }, + { "CPUID 0x80000001.edx", "e1d", str_e1d }, + { "CPUID 0x80000001.ecx", "e1c", str_e1c }, + { "CPUID 0x0000000d:1.eax", "Da1", str_Da1 }, + { "CPUID 0x00000007:0.ebx", "7b0", str_7b0 }, + { "CPUID 0x00000007:0.ecx", "7c0", str_7c0 }, + { "CPUID 0x80000007.edx", "e7d", str_e7d }, + { "CPUID 0x80000008.ebx", "e8b", str_e8b }, + { "CPUID 0x00000007:0.edx", "7d0", str_7d0 }, + { "CPUID 0x00000007:1.eax", "7a1", str_7a1 }, + { "CPUID 0x80000021.eax", "e21a", str_e21a }, + { "CPUID 0x00000007:1.ebx", "7b1", str_7b1 }, + { "CPUID 0x00000007:2.edx", "7d2", str_7d2 }, + { "CPUID 0x00000007:1.ecx", "7c1", str_7c1 }, + { "CPUID 0x00000007:1.edx", "7d1", str_7d1 }, + { "MSR_ARCH_CAPS.lo", "m10Al", str_m10Al }, + { "MSR_ARCH_CAPS.hi", "m10Ah", str_m10Ah }, }; -#define COL_ALIGN "18" +#define COL_ALIGN "24" static const char *const fs_names[] = { [XEN_SYSCTL_cpu_featureset_raw] = "Raw", --- a/xen/arch/x86/domctl.c +++ b/xen/arch/x86/domctl.c @@ -84,6 +84,7 @@ static int update_domain_cpuid_info(stru /* Only care about the max_leaf limit. */ case 0x80000000 ... 0x80000000 + ARRAY_SIZE(p->extd.raw) - 1: + case XEN_X86_MSR_LEAF: break; default: @@ -129,6 +130,15 @@ static int update_domain_cpuid_info(stru case 0x80000000 ... 0x80000000 + ARRAY_SIZE(p->extd.raw) - 1: p->extd.raw[ctl->input[0] - 0x80000000] = leaf; break; + + case XEN_X86_MSR_LEAF: + switch ( ctl->input[1] ) + { + case MSR_ARCH_CAPABILITIES: + p->arch_caps.raw = ((uint64_t)ctl->edx << 32) | ctl->eax; + break; + } + break; } recalculate_cpuid_policy(d); --- a/xen/include/public/arch-x86/cpufeatureset.h +++ b/xen/include/public/arch-x86/cpufeatureset.h @@ -281,6 +281,10 @@ XEN_CPUFEATURE(MCDT_NO, 13*32 /* Intel-defined CPU features, CPUID level 0x00000007:1.edx, word 15 */ +/* Intel-defined CPU features, MSR_ARCH_CAPS 0x10a.eax, word 16 */ + +/* Intel-defined CPU features, MSR_ARCH_CAPS 0x10a.edx, word 17 */ + #endif /* XEN_CPUFEATURE */ /* Clean up from a default include. Close the enum (for C). */ --- a/xen/include/public/domctl.h +++ b/xen/include/public/domctl.h @@ -650,6 +650,7 @@ struct xen_domctl_set_target { #if defined(__i386__) || defined(__x86_64__) # define XEN_CPUID_INPUT_UNUSED 0xFFFFFFFF +# define XEN_X86_MSR_LEAF 0x006e6558 /* 'Xen\0' */ /* XEN_DOMCTL_set_cpuid */ struct xen_domctl_cpuid { uint32_t input[2]; --- a/xen/include/xen/lib/x86/cpu-policy.h +++ b/xen/include/xen/lib/x86/cpu-policy.h @@ -4,22 +4,24 @@ #include <xen/lib/x86/cpuid-autogen.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 FEATURESET_7a1 10 /* 0x00000007:1.eax */ -#define FEATURESET_e21a 11 /* 0x80000021.eax */ -#define FEATURESET_7b1 12 /* 0x00000007:1.ebx */ -#define FEATURESET_7d2 13 /* 0x00000007:2.edx */ -#define FEATURESET_7c1 14 /* 0x00000007:1.ecx */ -#define FEATURESET_7d1 15 /* 0x00000007:1.edx */ +#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 FEATURESET_7a1 10 /* 0x00000007:1.eax */ +#define FEATURESET_e21a 11 /* 0x80000021.eax */ +#define FEATURESET_7b1 12 /* 0x00000007:1.ebx */ +#define FEATURESET_7d2 13 /* 0x00000007:2.edx */ +#define FEATURESET_7c1 14 /* 0x00000007:1.ecx */ +#define FEATURESET_7d1 15 /* 0x00000007:1.edx */ +#define FEATURESET_m10Al 16 /* 0x0000010a.eax */ +#define FEATURESET_m10Ah 17 /* 0x0000010a.edx */ struct cpuid_leaf { @@ -333,17 +335,13 @@ struct cpu_policy * fixed in hardware. */ union { - uint32_t raw; + uint64_t raw; + struct { + uint32_t lo, hi; + }; 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; + DECL_BITFIELD(m10Al); + DECL_BITFIELD(m10Ah); }; } arch_caps; --- a/xen/lib/x86/cpuid.c +++ b/xen/lib/x86/cpuid.c @@ -21,6 +21,8 @@ void x86_cpu_policy_to_featureset( fs[FEATURESET_7d2] = p->feat._7d2; fs[FEATURESET_7c1] = p->feat._7c1; fs[FEATURESET_7d1] = p->feat._7d1; + fs[FEATURESET_m10Al] = p->arch_caps.lo; + fs[FEATURESET_m10Ah] = p->arch_caps.hi; } void x86_cpu_featureset_to_policy( @@ -42,6 +44,8 @@ void x86_cpu_featureset_to_policy( p->feat._7d2 = fs[FEATURESET_7d2]; p->feat._7c1 = fs[FEATURESET_7c1]; p->feat._7d1 = fs[FEATURESET_7d1]; + p->arch_caps.lo = fs[FEATURESET_m10Al]; + p->arch_caps.hi = fs[FEATURESET_m10Ah]; } void x86_cpu_policy_fill_native(struct cpu_policy *p)
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