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On AMD SMM protected memory is part of the address map, but handled
internally like an MTRR. That leads to large pages getting split
internally which has some performance implications. Check for the
AMD TSEG MSR and split the large page mapping on that area
explicitely if it is part of the direct mapping.
There is also SMM ASEG, but it is in the first 1MB and already covered by
the earlier split first page patch.
Idea for this came from an earlier patch by Andreas Herrmann
On a RevF dual Socket Opteron system kernbench shows a clear
improvement from this:
(together with the earlier patches in this series, especially the
split first 2MB patch)
[lower is better]
no split stddev split stddev delta
Elapsed Time 87.146 (0.727516) 84.296 (1.09098) -3.2%
User Time 274.537 (4.05226) 273.692 (3.34344) -0.3%
System Time 34.907 (0.42492) 34.508 (0.26832) -1.1%
Percent CPU 322.5 (38.3007) 326.5 (44.5128) +1.2%
=> About 3.2% improvement in elapsed time for kernbench.
With GB pages on AMD Fam1h the impact of splitting is much higher of course,
since it would split two full GB pages (together with the first
1MB split patch) instead of two 2MB pages. I could not benchmark
a clear difference in kernbench on gbpages, so I kept it disabled
for that case
That was only limited benchmarking of course, so if someone
was interested in running more tests for the gbpages case
that could be revisited (contributions welcome)
I didn't bother implementing this for 32bit because it is very
unlikely the 32bit lowmem mapping overlaps into the TSEG near 4GB
and the 2MB low split is already handled for both.
[ mingo@elte.hu: do it on gbpages kernels too, there's no clear reason
why it shouldnt help there. ]
Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: andreas.herrmann3@amd.com
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
312 lines
10 KiB
C
312 lines
10 KiB
C
#ifndef __ASM_MSR_INDEX_H
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#define __ASM_MSR_INDEX_H
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/* CPU model specific register (MSR) numbers */
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/* x86-64 specific MSRs */
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#define MSR_EFER 0xc0000080 /* extended feature register */
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#define MSR_STAR 0xc0000081 /* legacy mode SYSCALL target */
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#define MSR_LSTAR 0xc0000082 /* long mode SYSCALL target */
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#define MSR_CSTAR 0xc0000083 /* compat mode SYSCALL target */
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#define MSR_SYSCALL_MASK 0xc0000084 /* EFLAGS mask for syscall */
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#define MSR_FS_BASE 0xc0000100 /* 64bit FS base */
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#define MSR_GS_BASE 0xc0000101 /* 64bit GS base */
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#define MSR_KERNEL_GS_BASE 0xc0000102 /* SwapGS GS shadow */
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/* EFER bits: */
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#define _EFER_SCE 0 /* SYSCALL/SYSRET */
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#define _EFER_LME 8 /* Long mode enable */
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#define _EFER_LMA 10 /* Long mode active (read-only) */
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#define _EFER_NX 11 /* No execute enable */
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#define EFER_SCE (1<<_EFER_SCE)
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#define EFER_LME (1<<_EFER_LME)
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#define EFER_LMA (1<<_EFER_LMA)
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#define EFER_NX (1<<_EFER_NX)
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/* Intel MSRs. Some also available on other CPUs */
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#define MSR_IA32_PERFCTR0 0x000000c1
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#define MSR_IA32_PERFCTR1 0x000000c2
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#define MSR_FSB_FREQ 0x000000cd
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#define MSR_MTRRcap 0x000000fe
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#define MSR_IA32_BBL_CR_CTL 0x00000119
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#define MSR_IA32_SYSENTER_CS 0x00000174
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#define MSR_IA32_SYSENTER_ESP 0x00000175
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#define MSR_IA32_SYSENTER_EIP 0x00000176
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#define MSR_IA32_MCG_CAP 0x00000179
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#define MSR_IA32_MCG_STATUS 0x0000017a
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#define MSR_IA32_MCG_CTL 0x0000017b
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#define MSR_IA32_PEBS_ENABLE 0x000003f1
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#define MSR_IA32_DS_AREA 0x00000600
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#define MSR_IA32_PERF_CAPABILITIES 0x00000345
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#define MSR_MTRRfix64K_00000 0x00000250
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#define MSR_MTRRfix16K_80000 0x00000258
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#define MSR_MTRRfix16K_A0000 0x00000259
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#define MSR_MTRRfix4K_C0000 0x00000268
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#define MSR_MTRRfix4K_C8000 0x00000269
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#define MSR_MTRRfix4K_D0000 0x0000026a
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#define MSR_MTRRfix4K_D8000 0x0000026b
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#define MSR_MTRRfix4K_E0000 0x0000026c
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#define MSR_MTRRfix4K_E8000 0x0000026d
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#define MSR_MTRRfix4K_F0000 0x0000026e
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#define MSR_MTRRfix4K_F8000 0x0000026f
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#define MSR_MTRRdefType 0x000002ff
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#define MSR_IA32_CR_PAT 0x00000277
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#define MSR_IA32_DEBUGCTLMSR 0x000001d9
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#define MSR_IA32_LASTBRANCHFROMIP 0x000001db
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#define MSR_IA32_LASTBRANCHTOIP 0x000001dc
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#define MSR_IA32_LASTINTFROMIP 0x000001dd
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#define MSR_IA32_LASTINTTOIP 0x000001de
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/* DEBUGCTLMSR bits (others vary by model): */
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#define _DEBUGCTLMSR_LBR 0 /* last branch recording */
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#define _DEBUGCTLMSR_BTF 1 /* single-step on branches */
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#define DEBUGCTLMSR_LBR (1UL << _DEBUGCTLMSR_LBR)
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#define DEBUGCTLMSR_BTF (1UL << _DEBUGCTLMSR_BTF)
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#define MSR_IA32_MC0_CTL 0x00000400
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#define MSR_IA32_MC0_STATUS 0x00000401
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#define MSR_IA32_MC0_ADDR 0x00000402
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#define MSR_IA32_MC0_MISC 0x00000403
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#define MSR_P6_PERFCTR0 0x000000c1
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#define MSR_P6_PERFCTR1 0x000000c2
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#define MSR_P6_EVNTSEL0 0x00000186
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#define MSR_P6_EVNTSEL1 0x00000187
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/* AMD64 MSRs. Not complete. See the architecture manual for a more
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complete list. */
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#define MSR_AMD64_NB_CFG 0xc001001f
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#define MSR_AMD64_IBSFETCHCTL 0xc0011030
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#define MSR_AMD64_IBSFETCHLINAD 0xc0011031
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#define MSR_AMD64_IBSFETCHPHYSAD 0xc0011032
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#define MSR_AMD64_IBSOPCTL 0xc0011033
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#define MSR_AMD64_IBSOPRIP 0xc0011034
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#define MSR_AMD64_IBSOPDATA 0xc0011035
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#define MSR_AMD64_IBSOPDATA2 0xc0011036
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#define MSR_AMD64_IBSOPDATA3 0xc0011037
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#define MSR_AMD64_IBSDCLINAD 0xc0011038
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#define MSR_AMD64_IBSDCPHYSAD 0xc0011039
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#define MSR_AMD64_IBSCTL 0xc001103a
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/* Fam 10h MSRs */
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#define MSR_FAM10H_MMIO_CONF_BASE 0xc0010058
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#define FAM10H_MMIO_CONF_ENABLE (1<<0)
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#define FAM10H_MMIO_CONF_BUSRANGE_MASK 0xf
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#define FAM10H_MMIO_CONF_BUSRANGE_SHIFT 2
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#define FAM10H_MMIO_CONF_BASE_MASK 0xfffffff
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#define FAM10H_MMIO_CONF_BASE_SHIFT 20
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/* K8 MSRs */
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#define MSR_K8_TOP_MEM1 0xc001001a
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#define MSR_K8_TOP_MEM2 0xc001001d
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#define MSR_K8_SYSCFG 0xc0010010
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#define MSR_K8_HWCR 0xc0010015
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#define MSR_K8_ENABLE_C1E 0xc0010055
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#define MSR_K8_TSEG_ADDR 0xc0010112
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#define K8_MTRRFIXRANGE_DRAM_ENABLE 0x00040000 /* MtrrFixDramEn bit */
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#define K8_MTRRFIXRANGE_DRAM_MODIFY 0x00080000 /* MtrrFixDramModEn bit */
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#define K8_MTRR_RDMEM_WRMEM_MASK 0x18181818 /* Mask: RdMem|WrMem */
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/* K7 MSRs */
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#define MSR_K7_EVNTSEL0 0xc0010000
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#define MSR_K7_PERFCTR0 0xc0010004
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#define MSR_K7_EVNTSEL1 0xc0010001
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#define MSR_K7_PERFCTR1 0xc0010005
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#define MSR_K7_EVNTSEL2 0xc0010002
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#define MSR_K7_PERFCTR2 0xc0010006
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#define MSR_K7_EVNTSEL3 0xc0010003
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#define MSR_K7_PERFCTR3 0xc0010007
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#define MSR_K7_CLK_CTL 0xc001001b
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#define MSR_K7_HWCR 0xc0010015
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#define MSR_K7_FID_VID_CTL 0xc0010041
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#define MSR_K7_FID_VID_STATUS 0xc0010042
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/* K6 MSRs */
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#define MSR_K6_EFER 0xc0000080
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#define MSR_K6_STAR 0xc0000081
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#define MSR_K6_WHCR 0xc0000082
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#define MSR_K6_UWCCR 0xc0000085
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#define MSR_K6_EPMR 0xc0000086
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#define MSR_K6_PSOR 0xc0000087
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#define MSR_K6_PFIR 0xc0000088
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/* Centaur-Hauls/IDT defined MSRs. */
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#define MSR_IDT_FCR1 0x00000107
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#define MSR_IDT_FCR2 0x00000108
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#define MSR_IDT_FCR3 0x00000109
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#define MSR_IDT_FCR4 0x0000010a
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#define MSR_IDT_MCR0 0x00000110
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#define MSR_IDT_MCR1 0x00000111
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#define MSR_IDT_MCR2 0x00000112
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#define MSR_IDT_MCR3 0x00000113
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#define MSR_IDT_MCR4 0x00000114
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#define MSR_IDT_MCR5 0x00000115
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#define MSR_IDT_MCR6 0x00000116
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#define MSR_IDT_MCR7 0x00000117
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#define MSR_IDT_MCR_CTRL 0x00000120
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/* VIA Cyrix defined MSRs*/
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#define MSR_VIA_FCR 0x00001107
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#define MSR_VIA_LONGHAUL 0x0000110a
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#define MSR_VIA_RNG 0x0000110b
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#define MSR_VIA_BCR2 0x00001147
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/* Transmeta defined MSRs */
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#define MSR_TMTA_LONGRUN_CTRL 0x80868010
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#define MSR_TMTA_LONGRUN_FLAGS 0x80868011
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#define MSR_TMTA_LRTI_READOUT 0x80868018
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#define MSR_TMTA_LRTI_VOLT_MHZ 0x8086801a
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/* Intel defined MSRs. */
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#define MSR_IA32_P5_MC_ADDR 0x00000000
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#define MSR_IA32_P5_MC_TYPE 0x00000001
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#define MSR_IA32_TSC 0x00000010
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#define MSR_IA32_PLATFORM_ID 0x00000017
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#define MSR_IA32_EBL_CR_POWERON 0x0000002a
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#define MSR_IA32_APICBASE 0x0000001b
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#define MSR_IA32_APICBASE_BSP (1<<8)
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#define MSR_IA32_APICBASE_ENABLE (1<<11)
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#define MSR_IA32_APICBASE_BASE (0xfffff<<12)
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#define MSR_IA32_UCODE_WRITE 0x00000079
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#define MSR_IA32_UCODE_REV 0x0000008b
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#define MSR_IA32_PERF_STATUS 0x00000198
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#define MSR_IA32_PERF_CTL 0x00000199
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#define MSR_IA32_MPERF 0x000000e7
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#define MSR_IA32_APERF 0x000000e8
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#define MSR_IA32_THERM_CONTROL 0x0000019a
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#define MSR_IA32_THERM_INTERRUPT 0x0000019b
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#define MSR_IA32_THERM_STATUS 0x0000019c
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#define MSR_IA32_MISC_ENABLE 0x000001a0
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/* Intel Model 6 */
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#define MSR_P6_EVNTSEL0 0x00000186
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#define MSR_P6_EVNTSEL1 0x00000187
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/* P4/Xeon+ specific */
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#define MSR_IA32_MCG_EAX 0x00000180
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#define MSR_IA32_MCG_EBX 0x00000181
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#define MSR_IA32_MCG_ECX 0x00000182
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#define MSR_IA32_MCG_EDX 0x00000183
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#define MSR_IA32_MCG_ESI 0x00000184
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#define MSR_IA32_MCG_EDI 0x00000185
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#define MSR_IA32_MCG_EBP 0x00000186
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#define MSR_IA32_MCG_ESP 0x00000187
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#define MSR_IA32_MCG_EFLAGS 0x00000188
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#define MSR_IA32_MCG_EIP 0x00000189
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#define MSR_IA32_MCG_RESERVED 0x0000018a
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/* Pentium IV performance counter MSRs */
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#define MSR_P4_BPU_PERFCTR0 0x00000300
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#define MSR_P4_BPU_PERFCTR1 0x00000301
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#define MSR_P4_BPU_PERFCTR2 0x00000302
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#define MSR_P4_BPU_PERFCTR3 0x00000303
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#define MSR_P4_MS_PERFCTR0 0x00000304
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#define MSR_P4_MS_PERFCTR1 0x00000305
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#define MSR_P4_MS_PERFCTR2 0x00000306
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#define MSR_P4_MS_PERFCTR3 0x00000307
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#define MSR_P4_FLAME_PERFCTR0 0x00000308
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#define MSR_P4_FLAME_PERFCTR1 0x00000309
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#define MSR_P4_FLAME_PERFCTR2 0x0000030a
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#define MSR_P4_FLAME_PERFCTR3 0x0000030b
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#define MSR_P4_IQ_PERFCTR0 0x0000030c
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#define MSR_P4_IQ_PERFCTR1 0x0000030d
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#define MSR_P4_IQ_PERFCTR2 0x0000030e
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#define MSR_P4_IQ_PERFCTR3 0x0000030f
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#define MSR_P4_IQ_PERFCTR4 0x00000310
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#define MSR_P4_IQ_PERFCTR5 0x00000311
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#define MSR_P4_BPU_CCCR0 0x00000360
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#define MSR_P4_BPU_CCCR1 0x00000361
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#define MSR_P4_BPU_CCCR2 0x00000362
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#define MSR_P4_BPU_CCCR3 0x00000363
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#define MSR_P4_MS_CCCR0 0x00000364
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#define MSR_P4_MS_CCCR1 0x00000365
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#define MSR_P4_MS_CCCR2 0x00000366
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#define MSR_P4_MS_CCCR3 0x00000367
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#define MSR_P4_FLAME_CCCR0 0x00000368
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#define MSR_P4_FLAME_CCCR1 0x00000369
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#define MSR_P4_FLAME_CCCR2 0x0000036a
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#define MSR_P4_FLAME_CCCR3 0x0000036b
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#define MSR_P4_IQ_CCCR0 0x0000036c
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#define MSR_P4_IQ_CCCR1 0x0000036d
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#define MSR_P4_IQ_CCCR2 0x0000036e
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#define MSR_P4_IQ_CCCR3 0x0000036f
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#define MSR_P4_IQ_CCCR4 0x00000370
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#define MSR_P4_IQ_CCCR5 0x00000371
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#define MSR_P4_ALF_ESCR0 0x000003ca
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#define MSR_P4_ALF_ESCR1 0x000003cb
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#define MSR_P4_BPU_ESCR0 0x000003b2
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#define MSR_P4_BPU_ESCR1 0x000003b3
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#define MSR_P4_BSU_ESCR0 0x000003a0
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#define MSR_P4_BSU_ESCR1 0x000003a1
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#define MSR_P4_CRU_ESCR0 0x000003b8
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#define MSR_P4_CRU_ESCR1 0x000003b9
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#define MSR_P4_CRU_ESCR2 0x000003cc
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#define MSR_P4_CRU_ESCR3 0x000003cd
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#define MSR_P4_CRU_ESCR4 0x000003e0
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#define MSR_P4_CRU_ESCR5 0x000003e1
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#define MSR_P4_DAC_ESCR0 0x000003a8
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#define MSR_P4_DAC_ESCR1 0x000003a9
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#define MSR_P4_FIRM_ESCR0 0x000003a4
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#define MSR_P4_FIRM_ESCR1 0x000003a5
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#define MSR_P4_FLAME_ESCR0 0x000003a6
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#define MSR_P4_FLAME_ESCR1 0x000003a7
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#define MSR_P4_FSB_ESCR0 0x000003a2
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#define MSR_P4_FSB_ESCR1 0x000003a3
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#define MSR_P4_IQ_ESCR0 0x000003ba
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#define MSR_P4_IQ_ESCR1 0x000003bb
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#define MSR_P4_IS_ESCR0 0x000003b4
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#define MSR_P4_IS_ESCR1 0x000003b5
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#define MSR_P4_ITLB_ESCR0 0x000003b6
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#define MSR_P4_ITLB_ESCR1 0x000003b7
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#define MSR_P4_IX_ESCR0 0x000003c8
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#define MSR_P4_IX_ESCR1 0x000003c9
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#define MSR_P4_MOB_ESCR0 0x000003aa
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#define MSR_P4_MOB_ESCR1 0x000003ab
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#define MSR_P4_MS_ESCR0 0x000003c0
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#define MSR_P4_MS_ESCR1 0x000003c1
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#define MSR_P4_PMH_ESCR0 0x000003ac
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#define MSR_P4_PMH_ESCR1 0x000003ad
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#define MSR_P4_RAT_ESCR0 0x000003bc
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#define MSR_P4_RAT_ESCR1 0x000003bd
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#define MSR_P4_SAAT_ESCR0 0x000003ae
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#define MSR_P4_SAAT_ESCR1 0x000003af
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#define MSR_P4_SSU_ESCR0 0x000003be
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#define MSR_P4_SSU_ESCR1 0x000003bf /* guess: not in manual */
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#define MSR_P4_TBPU_ESCR0 0x000003c2
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#define MSR_P4_TBPU_ESCR1 0x000003c3
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#define MSR_P4_TC_ESCR0 0x000003c4
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#define MSR_P4_TC_ESCR1 0x000003c5
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#define MSR_P4_U2L_ESCR0 0x000003b0
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#define MSR_P4_U2L_ESCR1 0x000003b1
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/* Intel Core-based CPU performance counters */
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#define MSR_CORE_PERF_FIXED_CTR0 0x00000309
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#define MSR_CORE_PERF_FIXED_CTR1 0x0000030a
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#define MSR_CORE_PERF_FIXED_CTR2 0x0000030b
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#define MSR_CORE_PERF_FIXED_CTR_CTRL 0x0000038d
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#define MSR_CORE_PERF_GLOBAL_STATUS 0x0000038e
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#define MSR_CORE_PERF_GLOBAL_CTRL 0x0000038f
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#define MSR_CORE_PERF_GLOBAL_OVF_CTRL 0x00000390
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/* Geode defined MSRs */
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#define MSR_GEODE_BUSCONT_CONF0 0x00001900
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#endif /* __ASM_MSR_INDEX_H */
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