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# Date Author Comment
dc7a09cf 03/16/2011 10:11 pm Jan Kiszka

Expose thread_id in info cpus

Based on patch by Glauber Costa:

To allow management applications like libvirt to apply CPU affinities to
the VCPU threads, expose their ID via info cpus. This patch provides the
pre-existing and used interface from qemu-kvm....

c2e3dee6 02/17/2011 11:46 am Laurent Vivier

linux-user: Define target alignment size

Datatype alignment can be found using following application:

int main(void) {
printf("alignof(short) %ld\n", alignof(short));
printf("alignof(int) %ld\n", alignof(int));
printf("alignof(long) %ld\n", alignof(long));...

aa2c364b 02/14/2011 04:39 pm Jan Kiszka

Prevent abortion on multiple VCPU kicks

If we call qemu_cpu_kick more than once before the target was able to
process the signal, pthread_kill will fail, and qemu will abort. Prevent
this by avoiding the redundant signal.

This logic can be found in qemu-kvm as well....

e82bcec2 05/11/2010 08:02 pm Marcelo Tosatti

port qemu-kvm's on_vcpu code

run_on_cpu allows to execute work on a given CPUState context.

Signed-off-by: Marcelo Tosatti <>
Signed-off-by: Avi Kivity <>

ced6c051 05/11/2010 08:02 pm Marcelo Tosatti

move stop/stopped CPU_COMMON fields after area zeroed by reset

cpu_reset zeroes CPUState upto breakpoints member. Contents of
stop/stopped should not be zeroed on cpu_reset.

Signed-off-by: Marcelo Tosatti <>
Signed-off-by: Avi Kivity <>

355b1943 04/05/2010 02:28 am Paul Brook

Split TLB addend and target_phys_addr_t

Historically the qemu tlb "addend" field was used for both RAM and IO accesses,
so needed to be able to hold both host addresses (unsigned long) and guest
physical addresses (target_phys_addr_t). However since the introduction of...

d4c430a8 03/17/2010 04:44 am Paul Brook

Large page TLB flush

QEMU uses a fixed page size for the CPU TLB. If the guest uses large
pages then we effectively split these into multiple smaller pages, and
populate the corresponding TLB entries on demand.

When the guest invalidates the TLB by virtual address we must invalidate...

20cb400d 03/12/2010 08:34 pm Paul Brook

Remove TLB from userspace

Remove TLB from userspace CPU structure.

Signed-off-by: Paul Brook <>

9ded2744 02/03/2010 11:47 pm Jan Kiszka

KVM: Move and rename regs_modified

Touching the user space representation of KVM's VCPU state is -
naturally - a per-VCPU thing. So move the dirty flag into KVM_CPU_COMMON
and rename it at this chance to reflect its true meaning.

Signed-off-by: Jan Kiszka <>

acb6685f 12/18/2009 07:26 pm Anthony Liguori

Revert "kvm: x86: Save/restore exception_index"

This reverts commit ebbc8a3d8e76d0402f8a08c10c0f32e24715d41d.

As suggested by Jan Kiszka,

"It was obsoleted by d1793b836f8f123b961c613de1bb1c0c185c84cc and now
saves/restores a useless field."

Signed-off-by: Anthony Liguori <>

4d6e3ac5 12/12/2009 03:59 pm Jan Kiszka

kvm: x86: Save/restore exception_index

As KVM now makes use of exception_index to keep pending exceptions, we
have to save&restore this field as well.

NOTE: We have to nail the arch-independent exception_index down to a
certain bit width for proper vmstate processing, namely to 32 bit....

c227f099 10/02/2009 12:12 am Anthony Liguori

Revert "Get rid of _t suffix"

In the very least, a change like this requires discussion on the list.

The naming convention is goofy and it causes a massive merge problem. Something
like this must be presented on the list first so people can provide input...

99a0949b 10/01/2009 09:45 pm malc

Get rid of _t suffix

Some not so obvious bits, slirp and Xen were left alone for the time
being.

Signed-off-by: malc <>

72cf2d4f 09/12/2009 10:36 am Blue Swirl

Fix sys-queue.h conflict for good

Problem: Our file sys-queue.h is a copy of the BSD file, but there are
some additions and it's not entirely compatible. Because of that, there have
been conflicts with system headers on BSD systems. Some hacks have been
introduced in the commits 15cc9235840a22c289edbe064a9b3c19c5f49896,...

dc6b1c09 08/28/2009 03:33 am Andre Przywara

extend -smp parsing to include cores= and threads= options

For injecting multi-core and multi-threading CPU topology into guests
extend the -smp syntax to accommodate cores and threads specification.
Syntax: -smp smp_value[,cores=nr_cores][,threads=nr_threads]\...

e2542fe2 07/27/2009 10:09 pm Juan Quintela

rename WORDS_BIGENDIAN to HOST_WORDS_BIGENDIAN

Signed-off-by: Juan Quintela <>
Signed-off-by: Anthony Liguori <>

8167ee88 07/16/2009 11:47 pm Blue Swirl

Update to a hopefully more future proof FSF address

Signed-off-by: Blue Swirl <>

1e9fa730 06/04/2009 12:04 pm Nathan Froyd

fix gdbstub support for multiple threads in usermode, v3

When debugging multi-threaded programs, QEMU's gdb stub would report the
correct number of threads (the qfThreadInfo and qsThreadInfo packets).
However, the stub was unable to actually switch between threads (the T...

1ad2134f 05/19/2009 06:17 pm Paul Brook

Hardware convenience library

The only target dependency for most hardware is sizeof(target_phys_addr_t).
Build these files into a convenience library, and use that instead of
building for every target.

Remove and poison various target specific macros to avoid bogus target...

d6dc3d42 04/24/2009 09:04 pm aliguori

qemu: introduce iothread (Marcelo Tosatti)

Fill in the hooks and introduce iothread.

Signed-off-by: Marcelo Tosatti <>
Signed-off-by: Anthony Liguori <>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7248 c046a42c-6fe2-441c-8c8c-71466251a162

268a362c 04/22/2009 01:30 am aliguori

added -numa cmdline parameter parser (Andre Przywara)

adds a -numa command line parameter and sets a QEMU global array with
the memory sizes. The CPU-to-node assignemnt is written into the
CPUState. If no specific values for memory and CPUs are given,
all resources will be split equally across all nodes....

c2764719 03/07/2009 05:24 pm pbrook

The _exit syscall is used for both thread termination in NPTL applications,
and process termination in legacy applications. Try to guess which we want
based on the presence of multiple threads.

Also implement locking when modifying the CPU list.

Signed-off-by: Paul Brook <>...

be214e6c 03/06/2009 11:48 pm aurel32

Fix race condition on access to env->interrupt_request

env->interrupt_request is accessed as the bit level from both main code
and signal handler, making a race condition possible even on CISC CPU.
This causes freeze of QEMU under high load when running the dyntick...

72d239ed 01/14/2009 09:40 pm aurel32

Get rid of user_mode_only

Signed-off-by: Aurelien Jarno <>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6305 c046a42c-6fe2-441c-8c8c-71466251a162

fad6cb1a 01/05/2009 12:05 am aurel32

Update FSF address in GPL/LGPL boilerplate

The attached patch updates the FSF address in the GPL/LGPL boilerplate
in most GPL/LGPLed files, and also in COPYING.LIB.

Signed-off-by: Stuart Brady <>
Signed-off-by: Aurelien Jarno <>...

ee50add9 11/29/2008 03:33 pm pbrook

Fix comment typo.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5808 c046a42c-6fe2-441c-8c8c-71466251a162

c0ce998e 11/26/2008 12:13 am aliguori

Use sys-queue.h for break/watchpoint managment (Jan Kiszka)

This switches cpu_break/watchpoint_* to TAILQ wrappers, simplifying the
code and also fixing a use after release issue in
cpu_break/watchpoint_remove_all.

Signed-off-by: Jan Kiszka <>...

a1d1bb31 11/18/2008 10:07 pm aliguori

Refactor and enhance break/watchpoint API (Jan Kiszka)

This patch prepares the QEMU cpu_watchpoint/breakpoint API to allow the
succeeding enhancements this series comes with.

First of all, it overcomes MAX_BREAKPOINTS/MAX_WATCHPOINTS by switching
to dynamically allocated data structures that are kept in linked lists....

7ba1e619 11/05/2008 06:04 pm aliguori

Add KVM support to QEMU

This patch adds very basic KVM support. KVM is a kernel module for Linux that
allows userspace programs to make use of hardware virtualization support. It
current supports x86 hardware virtualization using Intel VT-x or AMD-V. It...

56aebc89 10/11/2008 08:55 pm pbrook

Add GDB XML register description support.

Signed-off-by: Paul Brook <>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5459 c046a42c-6fe2-441c-8c8c-71466251a162

9656f324 07/01/2008 11:01 pm pbrook

Move interrupt_request and user_mode_only to common cpu state.
Save and restore env->interrupt_request and env->halted.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4817 c046a42c-6fe2-441c-8c8c-71466251a162

2e70f6ef 06/29/2008 04:03 am pbrook

Add instruction counter.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4799 c046a42c-6fe2-441c-8c8c-71466251a162

0f459d16 06/09/2008 03:20 am pbrook

Clean up MMIO TLB handling.
The IO index is now stored in its own field, instead of being wedged
into the vaddr field. This eliminates the ROMD and watchpoint host
pointer weirdness. The IO index space is expanded by 1 bit, and
several additional bits are made available in the TLB vaddr field....

d5975363 06/07/2008 11:50 pm pbrook

Multithreaded locking fixes.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4692 c046a42c-6fe2-441c-8c8c-71466251a162

9133e39b 05/29/2008 01:08 pm bellard

Push common interrupt variables to cpu-defs.h (Glauber Costa)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4612 c046a42c-6fe2-441c-8c8c-71466251a162

ce5232c5 05/28/2008 08:14 pm bellard

moved halted field to CPU_COMMON

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4609 c046a42c-6fe2-441c-8c8c-71466251a162

00f82b8a 04/28/2008 12:12 am aurel32

Use correct types to enable > 2G support, based on a patch from
Anthony Liguori.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4265 c046a42c-6fe2-441c-8c8c-71466251a162

03875444 04/22/2008 11:45 pm aurel32

Revert "Use correct types to enable > 2G support" (r4238), it is
not yet ready.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4240 c046a42c-6fe2-441c-8c8c-71466251a162

967032c3 04/22/2008 11:37 pm aurel32

Use correct types to enable > 2G support, based on a patch from
Anthony Liguori.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4238 c046a42c-6fe2-441c-8c8c-71466251a162

a20e31dc 04/08/2008 10:29 pm blueswir1

Use a common constant for temp_buf size

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4176 c046a42c-6fe2-441c-8c8c-71466251a162

57fec1fe 02/01/2008 12:50 pm bellard

use the TCG code generator

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3944 c046a42c-6fe2-441c-8c8c-71466251a162

d656469f 01/31/2008 11:22 am bellard

use simpler REGPARM convention - make CPUTLBEntry size a power of two

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3935 c046a42c-6fe2-441c-8c8c-71466251a162

01ba9816 12/09/2007 04:22 am ths

Handle cpu_model in copy_cpu(), by Kirill A. Shutemov.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3778 c046a42c-6fe2-441c-8c8c-71466251a162

87ecb68b 11/17/2007 07:14 pm pbrook

Break up vl.h.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3674 c046a42c-6fe2-441c-8c8c-71466251a162

623a930e 10/28/2007 09:45 pm ths

Implement missing MIPS supervisor mode bits.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3472 c046a42c-6fe2-441c-8c8c-71466251a162

6ebbf390 10/14/2007 10:07 am j_mayer

Replace is_user variable with mmu_idx in softmmu core,
allowing support of more than 2 mmu access modes.
Add backward compatibility is_user variable in targets code when needed.
Implement per target cpu_mmu_index function, avoiding duplicated code
and #ifdef TARGET_xxx in softmmu core functions....

71c8b8fd 09/19/2007 08:46 am j_mayer

TARGET_FMT_lu may also be useful.
Fix compilation warnings.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3190 c046a42c-6fe2-441c-8c8c-71466251a162

5fafdf24 09/17/2007 12:08 am ths

find -type f | xargs sed -i 's/[\t ]$//g' # on most files

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162

d79acba4 06/26/2007 11:01 pm balrog

Fix writes to pages containing watchpoints for the RAM not at 0x0 cases.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3025 c046a42c-6fe2-441c-8c8c-71466251a162

ba13c432 04/14/2007 03:15 pm j_mayer

Add TARGET_FMT_plx to properly display target_phys_addr_t variables.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2660 c046a42c-6fe2-441c-8c8c-71466251a162

6fa4cea9 04/05/2007 09:43 am j_mayer

Infrastructure to support more than 2 MMU modes.
Add example for Alpha and PowerPC hypervisor mode.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2596 c046a42c-6fe2-441c-8c8c-71466251a162

b62b461b 04/04/2007 10:58 am j_mayer

TARGET_FMT_ld may also be useful for debugging purposes.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2593 c046a42c-6fe2-441c-8c8c-71466251a162

6658ffb8 03/17/2007 01:58 am pbrook

Watchpoint support (previous commit got eaten by Savannah server crash).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2479 c046a42c-6fe2-441c-8c8c-71466251a162

b362e5e0 11/12/2006 10:40 pm pbrook

Speed up tlb_flush_page (Daniel Jacobowitz).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2210 c046a42c-6fe2-441c-8c8c-71466251a162

26a76461 06/25/2006 09:15 pm bellard

C99 64 bit printf

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2018 c046a42c-6fe2-441c-8c8c-71466251a162

84b7b8e7 11/28/2005 11:19 pm bellard

PAGE_EXEC support in TLBs

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1676 c046a42c-6fe2-441c-8c8c-71466251a162

5a1e3cfc 11/23/2005 11:02 pm bellard

better halted state support

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1652 c046a42c-6fe2-441c-8c8c-71466251a162

6a00d601 11/22/2005 01:25 am bellard

SMP support

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1640 c046a42c-6fe2-441c-8c8c-71466251a162

a316d335 11/20/2005 12:32 pm bellard

added CPU_COMMON and CPUState.tb_jmp_cache[]

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1630 c046a42c-6fe2-441c-8c8c-71466251a162

ff7b8f5b 08/21/2005 12:24 pm bellard

ram_addr_t type for ram offsets

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1542 c046a42c-6fe2-441c-8c8c-71466251a162

2be0071f 07/03/2005 01:09 am bellard

simplified PowerPC exception handling (Jocelyn Mayer)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1492 c046a42c-6fe2-441c-8c8c-71466251a162

b6853697 06/05/2005 08:10 pm bellard

added HOST_LONG_BITS in configure

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1457 c046a42c-6fe2-441c-8c8c-71466251a162

c27004ec 01/04/2005 01:35 am bellard

64 bit target support

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1189 c046a42c-6fe2-441c-8c8c-71466251a162

4f2ac237 04/26/2004 10:44 pm bellard

amd64 port (Jocelyn Mayer)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@762 c046a42c-6fe2-441c-8c8c-71466251a162

ab6d960f 04/26/2004 12:25 am bellard

added target_phys_addr_t

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@756 c046a42c-6fe2-441c-8c8c-71466251a162

f193c797 03/21/2004 07:06 pm bellard

do not depend on thunk.h - more log items

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@675 c046a42c-6fe2-441c-8c8c-71466251a162

ed1c0bcb 02/17/2004 12:17 am bellard

use osdep.h

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@626 c046a42c-6fe2-441c-8c8c-71466251a162

35b66fc4 01/24/2004 05:26 pm bellard

correct target_ulong definition

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@582 c046a42c-6fe2-441c-8c8c-71466251a162

db8d7466 10/27/2003 11:12 pm bellard

comments

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@405 c046a42c-6fe2-441c-8c8c-71466251a162

ab93bbe2 08/11/2003 12:35 am bellard

soft mmu support

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@349 c046a42c-6fe2-441c-8c8c-71466251a162