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| author | Robert Mustacchi <rm@joyent.com> | 2019-06-08 01:15:14 +0000 |
|---|---|---|
| committer | Robert Mustacchi <rm@joyent.com> | 2019-06-24 20:45:42 +0000 |
| commit | 394dadbc86535e5075b260851683ccbb3f571c6d (patch) | |
| tree | a87e70276f4d843dce356ea17b8a3079d5f08ab5 /usr | |
| parent | 3d280bd5aa877a68b01b0b5dc7cb0f92843e8b41 (diff) | |
| download | illumos-joyent-394dadbc86535e5075b260851683ccbb3f571c6d.tar.gz | |
OS-7850 AMD F17 core topology is per process node
Reviewed by: John Levon <john.levon@joyent.com>
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
Approved by: John Levon <john.levon@joyent.com>
Diffstat (limited to 'usr')
| -rw-r--r-- | usr/src/uts/i86pc/os/cpuid.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/usr/src/uts/i86pc/os/cpuid.c b/usr/src/uts/i86pc/os/cpuid.c index 40d5586c08..a5e66c2ee3 100644 --- a/usr/src/uts/i86pc/os/cpuid.c +++ b/usr/src/uts/i86pc/os/cpuid.c @@ -2024,18 +2024,27 @@ cpuid_amd_getids(cpu_t *cpu, uchar_t *features) cpi->cpi_clogid = cpi->cpi_apicid & ((1 << coreidsz) - 1); /* - * The package core ID varies depending on the family. For family 17h, - * we can get this directly from leaf CPUID_LEAF_EXT_1e. Otherwise, we - * can use the clogid as is. When family 17h is virtualized, the clogid - * should be sufficient as if we don't have valid data in the leaf, then - * we won't think we have SMT, in which case the cpi_clogid should be + * The package core ID varies depending on the family. While it may be + * tempting to use the CPUID_LEAF_EXT_1e %ebx core id, unfortunately, + * this value is the core id in the given node. For non-virtualized + * family 17h, we need to take the logical core id and shift off the + * threads like we do when getting the core id. Otherwise, we can use + * the clogid as is. When family 17h is virtualized, the clogid should + * be sufficient as if we don't have valid data in the leaf, then we + * won't think we have SMT, in which case the cpi_clogid should be * sufficient. */ if (cpi->cpi_family >= 0x17 && is_x86_feature(x86_featureset, X86FSET_TOPOEXT) && cpi->cpi_xmaxeax >= CPUID_LEAF_EXT_1e && cpi->cpi_extd[0x1e].cp_ebx != 0) { - cpi->cpi_pkgcoreid = BITX(cpi->cpi_extd[0x1e].cp_ebx, 7, 0); + uint_t nthreads = BITX(cpi->cpi_extd[0x1e].cp_ebx, 15, 8) + 1; + if (nthreads > 1) { + VERIFY3U(nthreads, ==, 2); + cpi->cpi_pkgcoreid = cpi->cpi_clogid >> 1; + } else { + cpi->cpi_pkgcoreid = cpi->cpi_clogid; + } } else { cpi->cpi_pkgcoreid = cpi->cpi_clogid; } |