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authorPeter Maydell2015-06-22 12:50:07 +0200
committerPeter Maydell2015-06-22 12:50:08 +0200
commitcb4e0f9ddf7d45de7e4716cbab661ea568bd0b6c (patch)
tree0d733527bb76eede5c0c0dfd8bfbee8bd539c0e5 /include
parenttarget-microblaze: Remove dead code (diff)
parentexec: clamp accesses against the MemoryRegionSection (diff)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
* i8254 security fix * Avoid long 100% CPU wait after restarting guests that use the periodic timer * Fixes for access clamping (WinXP, MIPS) * wixl/.msi support for qemu-ga on Windows # gpg: Signature made Fri Jun 19 11:30:53 2015 BST using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: exec: clamp accesses against the MemoryRegionSection exec: do not clamp accesses to MMIO regions mc146818rtc: Reset the periodic timer on load qemu-timer: Call clock reset notifiers on forward jumps tests: virtio-scsi: Add test for unaligned WRITE SAME tests: virtio-scsi: Move start/stop to individual test functions libqos: Complete virtio device ID definition list libqos: Allow calling guest_free on NULL pointer tests: Link libqos virtio object to virtio-scsi-test i8254: fix out-of-bounds memory access in pit_ioport_read() qemu-ga: Building Windows MSI installation with configure/Makefile qemu-ga: Introduce Windows MSI script qemu-ga: debug printouts to help troubleshoot installation qemu-ga: adding vss-[un]install options qemu-log: Open file for logging when specified Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include')
-rw-r--r--include/qemu/timer.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index e5bd494c07..9e4f90f4aa 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -787,6 +787,15 @@ static inline int64_t get_ticks_per_sec(void)
return 1000000000LL;
}
+static inline int64_t get_max_clock_jump(void)
+{
+ /* This should be small enough to prevent excessive interrupts from being
+ * generated by the RTC on clock jumps, but large enough to avoid frequent
+ * unnecessary resets in idle VMs.
+ */
+ return 60 * get_ticks_per_sec();
+}
+
/*
* Low level clock functions
*/