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qemu-timer: avoid checkpoints for virtual clock timers in external subsystems

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Adds EXTERNAL attribute definition to qemu timers subsystem and assigns
it to virtual clock timers, used in slirp (ICMP IPv6) and ui (key queue).
Virtual clock processing in rr mode can use this attribute instead of a
separate clock type.

Fixes: 87f4fe7653
Fixes: 775a412bf8
Fixes: 9888091404
Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com>
Message-Id: <e771f96ab94e86b54b9a783c974f2af3009fe5d1.1539764043.git.artem.k.pisarenko@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Artem Pisarenko 2018-10-17 14:24:20 +06:00 • committed by Paolo Bonzini
parent 89a603a0c8
commit e81f86790f
4 changed files with 58 additions and 11 deletions
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10
include/qemu/timer.h
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@ -60,9 +60,17 @@ typedef enum {
* Each attribute corresponds to one bit. Attributes modify the processing
* of timers when they fire.
*
* No attributes defined currently.
* The following attributes are available:
*
* QEMU_TIMER_ATTR_EXTERNAL: drives external subsystem
*
* Timers with this attribute do not recorded in rr mode, therefore it could be
* used for the subsystems that operate outside the guest core. Applicable only
* with virtual clock type.
*/
#define QEMU_TIMER_ATTR_EXTERNAL BIT(0)
typedef struct QEMUTimerList QEMUTimerList;
struct QEMUTimerListGroup {