SerialICE February 2012

serialice@serialice.com

3 participants
3 discussions

Re: [SerialICE] [coreboot] Which MSR disables hyperthreading (all non-BSP/AP cores)?
by Kyösti Mälkki 15 Feb '12

15 Feb '12

On Wed, 2012-02-15 at 17:33 +0100, Idwer Vollering wrote: > Or: how to start a multicore (hyperthreading) processor as if it were > a singlecore (non-hyperthreading) processor. > To my knowledge, there is no such MSR for P4 Hyper-Threaded CPUs using the NetBurst Architecture. So SerialICE may need a patch for hyper-threaded CPUs to enable Cache-As-Ram, like coreboot does. You've seen my cache-as-ram code with SIPIs for model f25 (P4 Xeon on socket 604), to enable cache on HT-enabled CPU. >From your responses (on e-mail) so far, I cannot determine where (if) it stops with P4 models f29 and f49 on socket 478 (?). You have actual POST code PCI device, make wise use of it. Thanks, KM

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Re: [SerialICE] Which MSR disables hyperthreading (all non-BSP/AP cores)?
by Stefan Reinauer 15 Feb '12

15 Feb '12

* Idwer Vollering <vidwer(a)gmail.com> [120215 17:33]: > Or: how to start a multicore (hyperthreading) processor as if it were > a singlecore (non-hyperthreading) processor. > > Would it be necessary to configure APIC/IPI in serialice' mainboard > specific code? You probably need something like: /* Send INIT IPI to all excluding ourself. */ movl $0x000C4500, %eax movl $0xFEE00300, %esi movl %eax, (%esi) (Taken from cache_as_ram.inc on model_6ex) Stefan

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Which MSR disables hyperthreading (all non-BSP/AP cores)?
by Idwer Vollering 15 Feb '12

15 Feb '12

Or: how to start a multicore (hyperthreading) processor as if it were a singlecore (non-hyperthreading) processor. Would it be necessary to configure APIC/IPI in serialice' mainboard specific code? See these message [1] [2] [3]. This is the output from two processors with hyperthreading disabled and enabled: $ diff cpu_intel_p4_model_f29_msr_with_ht_disabled.txt cpu_intel_p4_model_f29_msr_with_ht_enabled.txt2 41c41 < MSR 0x00000300 = 0x000000FD:0x8E129919 (MSR_BPU_COUNTER0) --- > MSR 0x00000300 = 0x000000FC:0xEB7BD6C3 (MSR_BPU_COUNTER0) 43c43 < MSR 0x00000302 = 0x00000000:0x00000000 (MSR_BPU_COUNTER2) --- > MSR 0x00000302 = 0x000000FB:0x75D2A276 (MSR_BPU_COUNTER2) 61c61 < MSR 0x00000362 = 0x00000000:0x00000000 (MSR_BPU_CCCR2) --- > MSR 0x00000362 = 0x00000000:0x0803D000 (MSR_BPU_CCCR2) 80c80 < MSR 0x000003A3 = 0x00000000:0x00000000 (MSR_FSB_ESCR1) --- > MSR 0x000003A3 = 0x00000000:0x26000203 (MSR_FSB_ESCR1) 147c147 < MSR 0x00000010 = 0x0000003A:0x8FB50494 (IA32_TIME_STAMP_COUNTER) --- > MSR 0x00000010 = 0x00000045:0x41DA8FAC (IA32_TIME_STAMP_COUNTER) 179a180,222 > MSR 0x000001D8 = 0x00000000:0x00000000 (MSR_LER_TO_LIP) > MSR 0x000001D9 = 0x00000000:0x00000000 (MSR_DEBUGCTLA) > MSR 0x000001DA = 0x00000000:0x00000000 (MSR_LASTBRANCH_TOS) > MSR 0x000001DB = 0x00000000:0x00000000 (MSR_LASTBRANCH_0) > MSR 0x000001DD = 0x00000000:0x00000000 (MSR_LASTBRANCH_2) > MSR 0x000001DE = 0x00000000:0x00000000 (MSR_LASTBRANCH_3) > MSR 0x00000277 = 0x00070106:0x00070106 (IA32_PAT) > MSR 0x00000600 = 0x00000000:0x00000000 (IA32_DS_AREA) > > ====================== UNIQUE MSRs (core 1) ====================== > MSR 0x00000010 = 0x00000045:0x41DE63F4 (IA32_TIME_STAMP_COUNTER) > MSR 0x0000001B = 0x00000000:0xFEE00800 (IA32_APIC_BASE) > MSR 0x0000008B = 0x0000002E:0x00000000 (IA32_BIOS_SIGN_ID) > MSR 0x000000FE = 0x00000000:0x00000508 (IA32_MTRRCAP) > MSR 0x00000174 = 0x00000000:0x00000060 (IA32_SYSENTER_CS) > MSR 0x00000175 = 0x00000000:0xF6606FC0 (IA32_SYSENTER_ESP) > MSR 0x00000176 = 0x00000000:0xC047C31C (IA32_SYSENTER_EIP) > MSR 0x00000179 = 0x00000000:0x000C0204 (IA32_MCG_CAP) > MSR 0x0000017A = 0x00000000:0x00000000 (IA32_MCG_STATUS) > (*) MSR 0x0000017B = 0xFFFFFFFF:0xFFFFFFFF (IA32_MCG_CTL) > MSR 0x00000180 = 0x00000000:0x00000000 (MSR_MCG_RAX) > MSR 0x00000181 = 0x00000000:0x00000000 (MSR_MCG_RBX) > MSR 0x00000182 = 0x00000000:0x00000000 (MSR_MCG_RCX) > MSR 0x00000183 = 0x00000000:0x00000000 (MSR_MCG_RDX) > MSR 0x00000184 = 0x00000000:0x00000000 (MSR_MCG_RSI) > MSR 0x00000185 = 0x00000000:0x00000000 (MSR_MCG_RDI) > MSR 0x00000186 = 0x00000000:0x00000000 (MSR_MCG_RBP) > MSR 0x00000187 = 0x00000000:0x00000000 (MSR_MCG_RSP) > MSR 0x00000188 = 0x00000000:0x00000000 (MSR_MCG_RFLAGS) > MSR 0x00000189 = 0x00000000:0x00000000 (MSR_MCG_RIP) > MSR 0x0000018A = 0x00000000:0x00000000 (MSR_MCG_MISC) > (*) MSR 0x00000190 = 0xFFFFFFFF:0xFFFFFFFF (MSR_MCG_R8) > (*) MSR 0x00000191 = 0xFFFFFFFF:0xFFFFFFFF (MSR_MCG_R9) > (*) MSR 0x00000192 = 0xFFFFFFFF:0xFFFFFFFF (MSR_MCG_R10) > (*) MSR 0x00000193 = 0xFFFFFFFF:0xFFFFFFFF (MSR_MCG_R11) > (*) MSR 0x00000194 = 0xFFFFFFFF:0xFFFFFFFF (MSR_MCG_R12) > (*) MSR 0x00000195 = 0xFFFFFFFF:0xFFFFFFFF (MSR_MCG_R13) > (*) MSR 0x00000196 = 0xFFFFFFFF:0xFFFFFFFF (MSR_MCG_R14) > (*) MSR 0x00000197 = 0xFFFFFFFF:0xFFFFFFFF (MSR_MCG_R15) > MSR 0x0000019A = 0x00000000:0x00000002 (IA32_CLOCK_MODULATION) > MSR 0x0000019B = 0x00000000:0x00000003 (IA32_THERM_INTERRUPT) > MSR 0x000001A0 = 0x00000000:0x00000089 (IA32_MISC_ENABLE) > MSR 0x000001D7 = 0x00000000:0xFFFFE066 (MSR_LER_FROM_LIP) And: $ diff cpu_intel_p4_model_f49_msr_with_ht_enabled.txt cpu_intel_p4_model_f49_msr_with_ht_dis abled.txt 45c45 < MSR 0x00000300 = 0x000000FC:0x2C774AC9 (MSR_BPU_COUNTER0) --- > MSR 0x00000300 = 0x000000FC:0xF2106B69 (MSR_BPU_COUNTER0) 47c47 < MSR 0x00000302 = 0x000000FA:0xF37E6A39 (MSR_BPU_COUNTER2) --- > MSR 0x00000302 = 0x00000000:0x00000000 (MSR_BPU_COUNTER2) 71c71 < MSR 0x00000010 = 0x0000004C:0x69A3BC78 (IA32_TIME_STAMP_COUNTER) --- > MSR 0x00000010 = 0x0000002E:0xD3FA1647 (IA32_TIME_STAMP_COUNTER) 79,121d78 < MSR 0x00000176 = 0x00000000:0xC047C31C (IA32_SYSENTER_EIP) < MSR 0x00000179 = 0x00000000:0x00180204 (IA32_MCG_CAP) < MSR 0x0000017A = 0x00000000:0x00000000 (IA32_MCG_STATUS) < MSR 0x00000180 = 0x00000000:0x00000000 (MSR_MCG_RAX) < MSR 0x00000181 = 0x00000000:0x00000000 (MSR_MCG_RBX) < MSR 0x00000182 = 0x00000000:0x00000000 (MSR_MCG_RCX) < MSR 0x00000183 = 0x00000000:0x00000000 (MSR_MCG_RDX) < MSR 0x00000184 = 0x00000000:0x00000000 (MSR_MCG_RSI) < MSR 0x00000185 = 0x00000000:0x00000000 (MSR_MCG_RDI) < MSR 0x00000186 = 0x00000000:0x00000000 (MSR_MCG_RBP) < MSR 0x00000187 = 0x00000000:0x00000000 (MSR_MCG_RSP) < MSR 0x00000188 = 0x00000000:0x00000000 (MSR_MCG_RFLAGS) < MSR 0x00000189 = 0x00000000:0x00000000 (MSR_MCG_RIP) < MSR 0x0000018A = 0x00000000:0x00000000 (MSR_MCG_MISC) < MSR 0x00000190 = 0x00000000:0x00000000 (MSR_MCG_R8) < MSR 0x00000191 = 0x00000000:0x00000000 (MSR_MCG_R9) < MSR 0x00000192 = 0x00000000:0x00000000 (MSR_MCG_R10) < MSR 0x00000193 = 0x00000000:0x00000000 (MSR_MCG_R11) < MSR 0x00000194 = 0x00000000:0x00000000 (MSR_MCG_R12) < MSR 0x00000195 = 0x00000000:0x00000000 (MSR_MCG_R13) < MSR 0x00000196 = 0x00000000:0x00000000 (MSR_MCG_R14) < MSR 0x00000197 = 0x00000000:0x00000000 (MSR_MCG_R15) < MSR 0x00000198 = 0x00000F2D:0x00000F2D (IA32_PERF_STATUS) < MSR 0x00000199 = 0x00000000:0x00000F2D (IA32_PERF_CTL) < MSR 0x0000019A = 0x00000000:0x00000000 (IA32_CLOCK_MODULATION) < MSR 0x0000019B = 0x00000000:0x00000003 (IA32_THERM_INTERRUPT) < MSR 0x000001A0 = 0x00000004:0x20840489 (IA32_MISC_ENABLE) < MSR 0x000001D7 = 0x00000000:0x00000000 (MSR_LER_FROM_LIP) < MSR 0x000001D8 = 0x00000000:0x00000000 (MSR_LER_TO_LIP) < MSR 0x000001D9 = 0x00000000:0x00000000 (MSR_DEBUGCTLA) < MSR 0x000001DA = 0x00000000:0x00000000 (MSR_LASTBRANCH_TOS) < MSR 0x00000277 = 0x00070106:0x00070106 (IA32_PAT) < MSR 0x00000600 = 0x00000000:0x00000000 (IA32_DS_AREA) < < ====================== UNIQUE MSRs (core 1) ====================== < MSR 0x00000010 = 0x0000004C:0x69AE1BD2 (IA32_TIME_STAMP_COUNTER) < MSR 0x0000001B = 0x00000000:0xFEE00800 (IA32_APIC_BASE) < (*) MSR 0x0000003A = 0xFFFFFFFF:0xFFFFFFFF (IA32_FEATURE_CONTROL) < MSR 0x0000008B = 0x00000003:0x00000000 (IA32_BIOS_SIGN_ID) < (*) MSR 0x0000009B = 0xFFFFFFFF:0xFFFFFFFF (IA32_SMM_MONITOR_CTL) < MSR 0x000000FE = 0x00000000:0x00000508 (IA32_MTRRCAP) < MSR 0x00000174 = 0x00000000:0x00000060 (IA32_SYSENTER_CS) < MSR 0x00000175 = 0x00000000:0xF6106FC0 (IA32_SYSENTER_ESP) [1] http://serialice.com/pipermail/serialice/2011-December/000305.html [2] http://serialice.com/pipermail/serialice/2009-December/000068.html [3] http://www.serialice.com/trac/serialice/changeset/82

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SerialICE February 2012