mii/qemu
1
0
Fork 0
mirror of https://github.com/mii443/qemu.git synced 2025-09-01 14:49:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

Correct alarm deadline computation

Browse Source 
When the QEMU_CLOCK_HOST clock was added, computation of its
deadline was added to qemu_next_deadline, which is correct but
incomplete.

I noticed this by reading the very convoluted rules whereby
qemu_next_deadline_dyntick is computed, which miss QEMU_CLOCK_HOST
when use_icount is true.  This patch inlines qemu_next_deadline
into qemu_next_deadline_dyntick, and then corrects the logic to skip
only QEMU_CLOCK_VIRTUAL when use_icount is true.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit 6ad0a1ed21)
This commit is contained in:
Paolo Bonzini
2011-02-03 14:49:00 +01:00
committed by Anthony Liguori
parent d7f88b4bbd
commit bbd9827cc7
1 changed files with 11 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
qemu-timer.c
View File

@ -724,11 +724,18 @@ static uint64_t qemu_next_deadline_dyntick(void)
int64_t delta;
int64_t rtdelta;
if (use_icount)
if (!use_icount && active_timers[QEMU_CLOCK_VIRTUAL]) {
delta = active_timers[QEMU_CLOCK_VIRTUAL]->expire_time -
qemu_get_clock(vm_clock);
} else {
delta = INT32_MAX;
else
delta = qemu_next_deadline();
}
if (active_timers[QEMU_CLOCK_HOST]) {
int64_t hdelta = active_timers[QEMU_CLOCK_HOST]->expire_time -
qemu_get_clock_ns(host_clock);
if (hdelta < delta)
delta = hdelta;
}
if (active_timers[QEMU_CLOCK_REALTIME]) {
rtdelta = (active_timers[QEMU_CLOCK_REALTIME]->expire_time * 1000000 -
qemu_get_clock_ns(rt_clock));