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From: Ulrich Obergfell <uobergfe@redhat.com>
To: qemu-devel@nongnu.org
Cc: kvm@vger.kernel.org, uobergfe@redhat.com, gcosta@redhat.com,
	avi@redhat.com, mtosatti@redhat.com, zamsden@redhat.com,
	aliguori@us.ibm.com, jan.kiszka@siemens.com
Subject: [PATCH v5 2/5] hpet 'driftfix': add driftfix property to HPETState and DeviceInfo
Date: Fri, 20 May 2011 09:13:20 +0200	[thread overview]
Message-ID: <1305875603-3104-3-git-send-email-uobergfe@redhat.com> (raw)
In-Reply-To: <1305875603-3104-1-git-send-email-uobergfe@redhat.com>

driftfix is a 'bit type' property. Compensation of delayed callbacks
and coalesced interrupts can be enabled with the command line option

    -global hpet.driftfix=on

driftfix is 'off' (disabled) by default.

Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
---
 hw/hpet.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/hw/hpet.c b/hw/hpet.c
index 6ce07bc..7513065 100644
--- a/hw/hpet.c
+++ b/hw/hpet.c
@@ -72,6 +72,8 @@ typedef struct HPETState {
     uint64_t isr;               /* interrupt status reg */
     uint64_t hpet_counter;      /* main counter */
     uint8_t  hpet_id;           /* instance id */
+
+    uint32_t driftfix;
 } HPETState;
 
 static uint32_t hpet_in_legacy_mode(HPETState *s)
@@ -738,6 +740,7 @@ static SysBusDeviceInfo hpet_device_info = {
     .qdev.props = (Property[]) {
         DEFINE_PROP_UINT8("timers", HPETState, num_timers, HPET_MIN_TIMERS),
         DEFINE_PROP_BIT("msi", HPETState, flags, HPET_MSI_SUPPORT, false),
+        DEFINE_PROP_BIT("driftfix", HPETState, driftfix, 0, false),
         DEFINE_PROP_END_OF_LIST(),
     },
 };
-- 
1.6.2.5


WARNING: multiple messages have this Message-ID (diff)
From: Ulrich Obergfell <uobergfe@redhat.com>
To: qemu-devel@nongnu.org
Cc: aliguori@us.ibm.com, mtosatti@redhat.com, kvm@vger.kernel.org,
	jan.kiszka@siemens.com, zamsden@redhat.com, uobergfe@redhat.com,
	gcosta@redhat.com, avi@redhat.com
Subject: [Qemu-devel] [PATCH v5 2/5] hpet 'driftfix': add driftfix property to HPETState and DeviceInfo
Date: Fri, 20 May 2011 09:13:20 +0200	[thread overview]
Message-ID: <1305875603-3104-3-git-send-email-uobergfe@redhat.com> (raw)
In-Reply-To: <1305875603-3104-1-git-send-email-uobergfe@redhat.com>

driftfix is a 'bit type' property. Compensation of delayed callbacks
and coalesced interrupts can be enabled with the command line option

    -global hpet.driftfix=on

driftfix is 'off' (disabled) by default.

Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
---
 hw/hpet.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/hw/hpet.c b/hw/hpet.c
index 6ce07bc..7513065 100644
--- a/hw/hpet.c
+++ b/hw/hpet.c
@@ -72,6 +72,8 @@ typedef struct HPETState {
     uint64_t isr;               /* interrupt status reg */
     uint64_t hpet_counter;      /* main counter */
     uint8_t  hpet_id;           /* instance id */
+
+    uint32_t driftfix;
 } HPETState;
 
 static uint32_t hpet_in_legacy_mode(HPETState *s)
@@ -738,6 +740,7 @@ static SysBusDeviceInfo hpet_device_info = {
     .qdev.props = (Property[]) {
         DEFINE_PROP_UINT8("timers", HPETState, num_timers, HPET_MIN_TIMERS),
         DEFINE_PROP_BIT("msi", HPETState, flags, HPET_MSI_SUPPORT, false),
+        DEFINE_PROP_BIT("driftfix", HPETState, driftfix, 0, false),
         DEFINE_PROP_END_OF_LIST(),
     },
 };
-- 
1.6.2.5

  parent reply	other threads:[~2011-05-20  7:13 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-20  7:13 [PATCH v5 0/5] hpet 'driftfix': alleviate time drift with HPET periodic timers Ulrich Obergfell
2011-05-20  7:13 ` [Qemu-devel] " Ulrich Obergfell
2011-05-20  7:13 ` [PATCH v5 1/5] hpet 'driftfix': add hooks required to detect coalesced interrupts (x86 apic only) Ulrich Obergfell
2011-05-20  7:13   ` [Qemu-devel] " Ulrich Obergfell
2011-05-20  7:13 ` Ulrich Obergfell [this message]
2011-05-20  7:13   ` [Qemu-devel] [PATCH v5 2/5] hpet 'driftfix': add driftfix property to HPETState and DeviceInfo Ulrich Obergfell
2011-05-20  7:13 ` [PATCH v5 3/5] hpet 'driftfix': add fields to HPETTimer and VMStateDescription Ulrich Obergfell
2011-05-20  7:13   ` [Qemu-devel] " Ulrich Obergfell
2011-05-20  7:13 ` [PATCH v5 4/5] hpet 'driftfix': add code in update_irq() to detect coalesced interrupts (x86 apic only) Ulrich Obergfell
2011-05-20  7:13   ` [Qemu-devel] " Ulrich Obergfell
2011-05-20  7:13 ` [PATCH v5 5/5] hpet 'driftfix': add code in hpet_timer() to compensate delayed callbacks and coalesced interrupts Ulrich Obergfell
2011-05-20  7:13   ` [Qemu-devel] " Ulrich Obergfell

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