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author | iap10@labyrinth.cl.cam.ac.uk <iap10@labyrinth.cl.cam.ac.uk> | 2003-10-10 19:26:34 +0000 |
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committer | iap10@labyrinth.cl.cam.ac.uk <iap10@labyrinth.cl.cam.ac.uk> | 2003-10-10 19:26:34 +0000 |
commit | ce8c8fcd8bac4e0866fea83ecfe7cb007ed77ca5 (patch) | |
tree | 91adc7b73a75522e1bc407483d6ab526f3c70a15 | |
parent | 3fbfd4aa46c75af08a04570a0d8f7e3599362fcf (diff) | |
download | xen-ce8c8fcd8bac4e0866fea83ecfe7cb007ed77ca5.tar.gz xen-ce8c8fcd8bac4e0866fea83ecfe7cb007ed77ca5.tar.bz2 xen-ce8c8fcd8bac4e0866fea83ecfe7cb007ed77ca5.zip |
bitkeeper revision 1.498.1.1 (3f8707eaKlkrjYr25jktT_f0NAFf1A)
New dom0 op to read/write msr's from privileged domains, mainly so you can use perfomance counters.
-rw-r--r-- | .rootkeys | 1 | ||||
-rw-r--r-- | xen/common/dom0_ops.c | 46 | ||||
-rw-r--r-- | xen/common/keyhandler.c | 23 | ||||
-rw-r--r-- | xen/include/hypervisor-ifs/dom0_ops.h | 12 | ||||
-rw-r--r-- | xenolinux-2.4.22-sparse/include/asm-xeno/msr.h | 138 | ||||
-rwxr-xr-x | xenolinux-2.4.22-sparse/mkbuildtree | 1 |
6 files changed, 219 insertions, 2 deletions
@@ -616,6 +616,7 @@ 3e5a4e673p7PEOyHFm3nHkYX6HQYBg xenolinux-2.4.22-sparse/include/asm-xeno/irq.h 3ead095db_LRUXnxaqs0dA1DWhPoQQ xenolinux-2.4.22-sparse/include/asm-xeno/keyboard.h 3e5a4e678ddsQOpbSiRdy1GRcDc9WA xenolinux-2.4.22-sparse/include/asm-xeno/mmu_context.h +3f8707e7ZmZ6TxyX0ZUEfvhA2Pb_xQ xenolinux-2.4.22-sparse/include/asm-xeno/msr.h 3e7270deQqtGPSnFxcW4AvJZuTUWfg xenolinux-2.4.22-sparse/include/asm-xeno/multicall.h 3e5a4e67mnQfh-R8KcQCaVo2Oho6yg xenolinux-2.4.22-sparse/include/asm-xeno/page.h 3e5a4e67uTYU5oEnIDjxuaez8njjqg xenolinux-2.4.22-sparse/include/asm-xeno/pgalloc.h diff --git a/xen/common/dom0_ops.c b/xen/common/dom0_ops.c index 9e6269b294..95ba419eb1 100644 --- a/xen/common/dom0_ops.c +++ b/xen/common/dom0_ops.c @@ -14,6 +14,7 @@ #include <xeno/sched.h> #include <xeno/event.h> #include <asm/domain_page.h> +#include <asm/msr.h> extern unsigned int alloc_new_dom_mem(struct task_struct *, unsigned int); @@ -61,6 +62,24 @@ static void build_page_list(struct task_struct *p) unmap_domain_mem(list); } + +static int msr_cpu_mask; +static unsigned long msr_addr; +static unsigned long msr_lo; +static unsigned long msr_hi; + +static void write_msr_for(void *unused) +{ + if (((1 << current->processor) & msr_cpu_mask)) + wrmsr(msr_addr, msr_lo, msr_hi); +} + +static void read_msr_for(void *unused) +{ + if (((1 << current->processor) & msr_cpu_mask)) + rdmsr(msr_addr, msr_lo, msr_hi); +} + long do_dom0_op(dom0_op_t *u_dom0_op) { @@ -262,6 +281,33 @@ long do_dom0_op(dom0_op_t *u_dom0_op) } break; + case DOM0_MSR: + { + if (op.u.msr.write) + { + msr_cpu_mask = op.u.msr.cpu_mask; + msr_addr = op.u.msr.msr; + msr_lo = op.u.msr.in1; + msr_hi = op.u.msr.in2; + smp_call_function(write_msr_for, NULL, 1, 1); + write_msr_for(NULL); + } + else + { + msr_cpu_mask = op.u.msr.cpu_mask; + msr_addr = op.u.msr.msr; + smp_call_function(read_msr_for, NULL, 1, 1); + read_msr_for(NULL); + + op.u.msr.out1 = msr_lo; + op.u.msr.out2 = msr_hi; + copy_to_user(u_dom0_op, &op, sizeof(op)); + } + ret = 0; + } + break; + + default: ret = -ENOSYS; diff --git a/xen/common/keyhandler.c b/xen/common/keyhandler.c index da5becb916..dede1bf26d 100644 --- a/xen/common/keyhandler.c +++ b/xen/common/keyhandler.c @@ -128,6 +128,26 @@ void do_task_queues(u_char key, void *dev_id, struct pt_regs *regs) read_unlock_irqrestore(&tasklist_lock, flags); } +void cpu_counters(u_char key, void *dev_id, struct pt_regs *regs) +{ + printk("CPU performance counters for CPU %d (current):\n", + smp_processor_id()); + { + unsigned int one1,one2,zero1,zero2; + rdmsr(MSR_P6_PERFCTR0, zero1, zero2); + rdmsr(MSR_P6_PERFCTR1, one1, one2); + printk("CPU%02d counter0=0x%02x:%08x counter1=0x%02x:%08x\n", + smp_processor_id(), zero2,zero1,one2,one1 ); + } +} + +void cpu_counters_reset(u_char key, void *dev_id, struct pt_regs *regs) +{ + printk("Reset CPU performance counters for CPU %d (current):\n", + smp_processor_id()); + wrmsr(MSR_P6_PERFCTR0,0,0); + wrmsr(MSR_P6_PERFCTR1,0,0); +} extern void perfc_printall (u_char key, void *dev_id, struct pt_regs *regs); extern void perfc_reset (u_char key, void *dev_id, struct pt_regs *regs); @@ -155,6 +175,7 @@ void initialize_keytable() add_key_handler('r', dump_runq, "dump run queues"); add_key_handler('B', kill_dom0, "reboot machine gracefully"); add_key_handler('R', halt_machine, "reboot machine ungracefully"); - + add_key_handler('c', cpu_counters, "CPU performance counters"); + add_key_handler('C', cpu_counters_reset,"reset CPU perfomance counters"); return; } diff --git a/xen/include/hypervisor-ifs/dom0_ops.h b/xen/include/hypervisor-ifs/dom0_ops.h index e617866090..a68db6ce95 100644 --- a/xen/include/hypervisor-ifs/dom0_ops.h +++ b/xen/include/hypervisor-ifs/dom0_ops.h @@ -20,6 +20,7 @@ #define DOM0_GETDOMAININFO 12 #define DOM0_BUILDDOMAIN 13 #define DOM0_IOPL 14 +#define DOM0_MSR 15 #define MAX_CMD_LEN 256 #define MAX_DOMAIN_NAME 16 @@ -97,6 +98,16 @@ typedef struct dom0_iopl_st unsigned int iopl; } dom0_iopl_t; +typedef struct dom0_msr_st +{ + /* IN variables. */ + int write, cpu_mask, msr; + unsigned int in1, in2; + /* OUT variables. */ + unsigned int out1, out2; + +} dom0_msr_t; + typedef struct dom0_op_st { unsigned long cmd; @@ -110,6 +121,7 @@ typedef struct dom0_op_st dom_meminfo_t meminfo; dom0_getdominfo_t getdominfo; dom0_iopl_t iopl; + dom0_msr_t msr; } u; } dom0_op_t; diff --git a/xenolinux-2.4.22-sparse/include/asm-xeno/msr.h b/xenolinux-2.4.22-sparse/include/asm-xeno/msr.h new file mode 100644 index 0000000000..1a2c8765a8 --- /dev/null +++ b/xenolinux-2.4.22-sparse/include/asm-xeno/msr.h @@ -0,0 +1,138 @@ +#ifndef __ASM_MSR_H +#define __ASM_MSR_H + +/* + * Access to machine-specific registers (available on 586 and better only) + * Note: the rd* operations modify the parameters directly (without using + * pointer indirection), this allows gcc to optimize better + */ + +#define rdmsr(msr,val1,val2) \ +{ \ + dom0_op_t op; \ + op.cmd = DOM0_MSR; \ + op.u.msr.write = 0; \ + op.u.msr.msr = msr; \ + op.u.msr.cpu_mask = (1 << current->processor); \ + HYPERVISOR_dom0_op(&op); \ + val1 = op.u.msr.out1; \ + val2 = op.u.msr.out2; \ +} + +#define wrmsr(msr,val1,val2) \ +{ \ + dom0_op_t op; \ + op.cmd = DOM0_MSR; \ + op.u.msr.write = 1; \ + op.u.msr.cpu_mask = (1 << current->processor); \ + op.u.msr.msr = msr; \ + op.u.msr.in1 = val1; \ + op.u.msr.in2 = val2; \ + HYPERVISOR_dom0_op(&op); \ +} + +#define rdtsc(low,high) \ + __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high)) + +#define rdtscl(low) \ + __asm__ __volatile__("rdtsc" : "=a" (low) : : "edx") + +#define rdtscll(val) \ + __asm__ __volatile__("rdtsc" : "=A" (val)) + +#define write_tsc(val1,val2) wrmsr(0x10, val1, val2) + +#define rdpmc(counter,low,high) \ + __asm__ __volatile__("rdpmc" \ + : "=a" (low), "=d" (high) \ + : "c" (counter)) + +/* symbolic names for some interesting MSRs */ +/* Intel defined MSRs. */ +#define MSR_IA32_P5_MC_ADDR 0 +#define MSR_IA32_P5_MC_TYPE 1 +#define MSR_IA32_PLATFORM_ID 0x17 +#define MSR_IA32_EBL_CR_POWERON 0x2a + +#define MSR_IA32_APICBASE 0x1b +#define MSR_IA32_APICBASE_BSP (1<<8) +#define MSR_IA32_APICBASE_ENABLE (1<<11) +#define MSR_IA32_APICBASE_BASE (0xfffff<<12) + +#define MSR_IA32_UCODE_WRITE 0x79 +#define MSR_IA32_UCODE_REV 0x8b + +#define MSR_IA32_BBL_CR_CTL 0x119 + +#define MSR_IA32_MCG_CAP 0x179 +#define MSR_IA32_MCG_STATUS 0x17a +#define MSR_IA32_MCG_CTL 0x17b + +#define MSR_IA32_THERM_CONTROL 0x19a +#define MSR_IA32_THERM_INTERRUPT 0x19b +#define MSR_IA32_THERM_STATUS 0x19c +#define MSR_IA32_MISC_ENABLE 0x1a0 + +#define MSR_IA32_DEBUGCTLMSR 0x1d9 +#define MSR_IA32_LASTBRANCHFROMIP 0x1db +#define MSR_IA32_LASTBRANCHTOIP 0x1dc +#define MSR_IA32_LASTINTFROMIP 0x1dd +#define MSR_IA32_LASTINTTOIP 0x1de + +#define MSR_IA32_MC0_CTL 0x400 +#define MSR_IA32_MC0_STATUS 0x401 +#define MSR_IA32_MC0_ADDR 0x402 +#define MSR_IA32_MC0_MISC 0x403 + +#define MSR_P6_PERFCTR0 0xc1 +#define MSR_P6_PERFCTR1 0xc2 +#define MSR_P6_EVNTSEL0 0x186 +#define MSR_P6_EVNTSEL1 0x187 + +#define MSR_IA32_PERF_STATUS 0x198 +#define MSR_IA32_PERF_CTL 0x199 + +/* AMD Defined MSRs */ +#define MSR_K6_EFER 0xC0000080 +#define MSR_K6_STAR 0xC0000081 +#define MSR_K6_WHCR 0xC0000082 +#define MSR_K6_UWCCR 0xC0000085 +#define MSR_K6_EPMR 0xC0000086 +#define MSR_K6_PSOR 0xC0000087 +#define MSR_K6_PFIR 0xC0000088 + +#define MSR_K7_EVNTSEL0 0xC0010000 +#define MSR_K7_PERFCTR0 0xC0010004 +#define MSR_K7_HWCR 0xC0010015 +#define MSR_K7_CLK_CTL 0xC001001b +#define MSR_K7_FID_VID_CTL 0xC0010041 +#define MSR_K7_VID_STATUS 0xC0010042 + +/* Centaur-Hauls/IDT defined MSRs. */ +#define MSR_IDT_FCR1 0x107 +#define MSR_IDT_FCR2 0x108 +#define MSR_IDT_FCR3 0x109 +#define MSR_IDT_FCR4 0x10a + +#define MSR_IDT_MCR0 0x110 +#define MSR_IDT_MCR1 0x111 +#define MSR_IDT_MCR2 0x112 +#define MSR_IDT_MCR3 0x113 +#define MSR_IDT_MCR4 0x114 +#define MSR_IDT_MCR5 0x115 +#define MSR_IDT_MCR6 0x116 +#define MSR_IDT_MCR7 0x117 +#define MSR_IDT_MCR_CTRL 0x120 + +/* VIA Cyrix defined MSRs*/ +#define MSR_VIA_FCR 0x1107 +#define MSR_VIA_LONGHAUL 0x110a +#define MSR_VIA_BCR2 0x1147 + +/* Transmeta defined MSRs */ +#define MSR_TMTA_LONGRUN_CTRL 0x80868010 +#define MSR_TMTA_LONGRUN_FLAGS 0x80868011 +#define MSR_TMTA_LRTI_READOUT 0x80868018 +#define MSR_TMTA_LRTI_VOLT_MHZ 0x8086801a + +#endif /* __ASM_MSR_H */ diff --git a/xenolinux-2.4.22-sparse/mkbuildtree b/xenolinux-2.4.22-sparse/mkbuildtree index 0200e2b59d..d9ea5b6510 100755 --- a/xenolinux-2.4.22-sparse/mkbuildtree +++ b/xenolinux-2.4.22-sparse/mkbuildtree @@ -130,7 +130,6 @@ ln -sf ../asm-i386/mmx.h ln -sf ../asm-i386/module.h ln -sf ../asm-i386/mpspec.h ln -sf ../asm-i386/msgbuf.h -ln -sf ../asm-i386/msr.h ln -sf ../asm-i386/mtrr.h ln -sf ../asm-i386/namei.h ln -sf ../asm-i386/param.h |