Re: [PATCH] kvm tools: Introduce KVM VCPU data structure

Ingo Molnar
2011-04-09T11:59:18Z

* Pekka Enberg <penberg@kernel.org> wrote:

> In preparation for threaded execution model, this patch introduces a KVM VCPU
> data structure 'struct kvm_cpu'.
>
> Cc: Asias He <asias.hejun@gmail.com>
> Cc: Cyrill Gorcunov <gorcunov@gmail.com>
> Cc: Ingo Molnar <mingo@elte.hu>
> Signed-off-by: Pekka Enberg <penberg@kernel.org>
> ---
> tools/kvm/Makefile | 1 +
> tools/kvm/cpuid.c | 6 +-
> tools/kvm/include/kvm/kvm-cpu.h | 33 ++++
> tools/kvm/include/kvm/kvm.h | 16 --
> tools/kvm/ioport.c | 2 +
> tools/kvm/kvm-cpu.c | 370 +++++++++++++++++++++++++++++++++++++++
> tools/kvm/kvm-run.c | 62 ++++---
> tools/kvm/kvm.c | 338 -----------------------------------
> 8 files changed, 445 insertions(+), 383 deletions(-)
> create mode 100644 tools/kvm/include/kvm/kvm-cpu.h
> create mode 100644 tools/kvm/kvm-cpu.c

This commit causes a segfault for 'kvm run bzImage':

(gdb) set args run bzImage
(gdb) run
Starting program: /home/mingo/tip/tools/kvm/kvm run bzImage
[Thread debugging using libthread_db enabled]

Program received signal SIGSEGV, Segmentation fault.
0x0000000000405054 in setup_bios (kvm=0x68a010) at bios.c:106
106 memset(p, 0, BDA_END - BDA_START);
Missing separate debuginfos, use: debuginfo-install glibc-2.13-1.x86_64
(gdb) bt
#0 0x0000000000405054 in setup_bios (kvm=0x68a010) at bios.c:106
#1 0x0000000000404ef5 in kvm_cmd_run (argc=<value optimized out>, argv=<value optimized out>,
prefix=<value optimized out>) at kvm-run.c:160
#2 0x00000000004038cf in handle_kvm_command (argc=<value optimized out>, argv=<value optimized out>)
at main.c:16
#3 main (argc=<value optimized out>, argv=<value optimized out>) at main.c:21
(gdb) q
A debugging session is active.

Thanks,

Ingo