Re: [Qemu-devel] [PATCH] dump: add kernel_gs_base to QEMU CPU state

2018-07-11 Thread Eduardo Habkost
On Wed, Jul 11, 2018 at 06:19:33PM +0200, Paolo Bonzini wrote: > On 11/07/2018 18:00, Eduardo Habkost wrote: > >> @@ -237,7 +237,7 @@ int x86_cpu_write_elf32_note(WriteCoreDumpFunction f, > >> CPUState *cs, > >> * please count up QEMUCPUSTATE_VERSION if you have changed definition of > >> * QE

Re: [Qemu-devel] [PATCH] dump: add kernel_gs_base to QEMU CPU state

2018-07-11 Thread Paolo Bonzini
On 11/07/2018 18:26, Viktor Prutyanov wrote: >> Where are the tools using this information, that need to be >> updated? Won't this break existing versions of those tools? >> >> Is the dump format and pointers to available tools documented >> somewhere? > I hope that someone from community knows ab

Re: [Qemu-devel] [PATCH] dump: add kernel_gs_base to QEMU CPU state

2018-07-11 Thread Viktor Prutyanov
On Wed, 11 Jul 2018 13:00:25 -0300 Eduardo Habkost wrote: > On Tue, Jul 10, 2018 at 06:21:09PM +0300, Viktor Prutyanov wrote: > > This patch adds field with content of KERNEL_GS_BASE MSR to QEMU > > note in ELF dump. > > > > On Windows, if all vCPUs are running usermode tasks at the time the > >

Re: [Qemu-devel] [PATCH] dump: add kernel_gs_base to QEMU CPU state

2018-07-11 Thread Paolo Bonzini
On 11/07/2018 18:00, Eduardo Habkost wrote: >> @@ -237,7 +237,7 @@ int x86_cpu_write_elf32_note(WriteCoreDumpFunction f, >> CPUState *cs, >> * please count up QEMUCPUSTATE_VERSION if you have changed definition of >> * QEMUCPUState, and modify the tools using this information accordingly. > Wh

Re: [Qemu-devel] [PATCH] dump: add kernel_gs_base to QEMU CPU state

2018-07-11 Thread Eduardo Habkost
On Tue, Jul 10, 2018 at 06:21:09PM +0300, Viktor Prutyanov wrote: > This patch adds field with content of KERNEL_GS_BASE MSR to QEMU note in > ELF dump. > > On Windows, if all vCPUs are running usermode tasks at the time the dump is > created, this can be helpful in the discovery of guest system s