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author | Keir Fraser <keir.fraser@citrix.com> | 2008-06-12 16:55:09 +0100 |
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committer | Keir Fraser <keir.fraser@citrix.com> | 2008-06-12 16:55:09 +0100 |
commit | aadeb224555dd5c9292e316f7608c4b5daeb8835 (patch) | |
tree | a34951a180c84a51558d408cdc789539298afd47 /xen/arch/x86/x86_64/traps.c | |
parent | a7bf85780578b98d71de4090efd30fbed0ed9291 (diff) | |
download | xen-aadeb224555dd5c9292e316f7608c4b5daeb8835.tar.gz xen-aadeb224555dd5c9292e316f7608c4b5daeb8835.tar.bz2 xen-aadeb224555dd5c9292e316f7608c4b5daeb8835.zip |
dom0 state dump
Since xenctx cannot (for obvious reasons) display the context of
dom0's vCPU-s, here are the beginnings of a console based mechanism to
achieve the same (useful if dom0 hangs with one or more de-scheduled
vCPU-s). The stack handling obviously needs improvement, but the
register context should come out fine in all cases.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Diffstat (limited to 'xen/arch/x86/x86_64/traps.c')
-rw-r--r-- | xen/arch/x86/x86_64/traps.c | 70 |
1 files changed, 48 insertions, 22 deletions
diff --git a/xen/arch/x86/x86_64/traps.c b/xen/arch/x86/x86_64/traps.c index 71e8fbe210..14769786ec 100644 --- a/xen/arch/x86/x86_64/traps.c +++ b/xen/arch/x86/x86_64/traps.c @@ -40,6 +40,33 @@ static void print_xen_info(void) debug, print_tainted(taint_str)); } +static void _show_registers(const struct cpu_user_regs *regs, + unsigned long crs[8], int guest_mode, + const char *context) +{ + printk("RIP: %04x:[<%016lx>]", regs->cs, regs->rip); + if ( !guest_mode ) + print_symbol(" %s", regs->rip); + printk("\nRFLAGS: %016lx CONTEXT: %s\n", regs->rflags, context); + printk("rax: %016lx rbx: %016lx rcx: %016lx\n", + regs->rax, regs->rbx, regs->rcx); + printk("rdx: %016lx rsi: %016lx rdi: %016lx\n", + regs->rdx, regs->rsi, regs->rdi); + printk("rbp: %016lx rsp: %016lx r8: %016lx\n", + regs->rbp, regs->rsp, regs->r8); + printk("r9: %016lx r10: %016lx r11: %016lx\n", + regs->r9, regs->r10, regs->r11); + printk("r12: %016lx r13: %016lx r14: %016lx\n", + regs->r12, regs->r13, regs->r14); + printk("r15: %016lx cr0: %016lx cr4: %016lx\n", + regs->r15, crs[0], crs[4]); + printk("cr3: %016lx cr2: %016lx\n", crs[3], crs[2]); + printk("ds: %04x es: %04x fs: %04x gs: %04x " + "ss: %04x cs: %04x\n", + regs->ds, regs->es, regs->fs, + regs->gs, regs->ss, regs->cs); +} + void show_registers(struct cpu_user_regs *regs) { struct cpu_user_regs fault_regs = *regs; @@ -91,28 +118,8 @@ void show_registers(struct cpu_user_regs *regs) } print_xen_info(); - printk("CPU: %d\nRIP: %04x:[<%016lx>]", - smp_processor_id(), fault_regs.cs, fault_regs.rip); - if ( !guest_mode(regs) ) - print_symbol(" %s", fault_regs.rip); - printk("\nRFLAGS: %016lx CONTEXT: %s\n", fault_regs.rflags, context); - printk("rax: %016lx rbx: %016lx rcx: %016lx\n", - fault_regs.rax, fault_regs.rbx, fault_regs.rcx); - printk("rdx: %016lx rsi: %016lx rdi: %016lx\n", - fault_regs.rdx, fault_regs.rsi, fault_regs.rdi); - printk("rbp: %016lx rsp: %016lx r8: %016lx\n", - fault_regs.rbp, fault_regs.rsp, fault_regs.r8); - printk("r9: %016lx r10: %016lx r11: %016lx\n", - fault_regs.r9, fault_regs.r10, fault_regs.r11); - printk("r12: %016lx r13: %016lx r14: %016lx\n", - fault_regs.r12, fault_regs.r13, fault_regs.r14); - printk("r15: %016lx cr0: %016lx cr4: %016lx\n", - fault_regs.r15, fault_crs[0], fault_crs[4]); - printk("cr3: %016lx cr2: %016lx\n", fault_crs[3], fault_crs[2]); - printk("ds: %04x es: %04x fs: %04x gs: %04x " - "ss: %04x cs: %04x\n", - fault_regs.ds, fault_regs.es, fault_regs.fs, - fault_regs.gs, fault_regs.ss, fault_regs.cs); + printk("CPU: %d\n", smp_processor_id()); + _show_registers(&fault_regs, fault_crs, guest_mode(regs), context); if ( this_cpu(ler_msr) && !guest_mode(regs) ) { @@ -123,6 +130,25 @@ void show_registers(struct cpu_user_regs *regs) } } +void vcpu_show_registers(const struct vcpu *v) +{ + const struct cpu_user_regs *regs = &v->arch.guest_context.user_regs; + unsigned long crs[8]; + + /* No need to handle HVM for now. */ + if ( is_hvm_vcpu(v) ) + return; + + crs[0] = v->arch.guest_context.ctrlreg[0]; + crs[2] = arch_get_cr2(v); + crs[3] = pagetable_get_paddr(guest_kernel_mode(v, regs) ? + v->arch.guest_table : + v->arch.guest_table_user); + crs[4] = v->arch.guest_context.ctrlreg[4]; + + _show_registers(regs, crs, 1, "guest"); +} + void show_page_walk(unsigned long addr) { unsigned long pfn, mfn = read_cr3() >> PAGE_SHIFT; |