Displaying 17 results from an estimated 17 matches for "vmw_sched_clock".
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vmi_sched_clock
2020 Feb 12
5
[PATCH 0/5] x86/vmware: Steal time accounting support
...are: Remove vmware_sched_clock_setup()
Preparation for the main patch.
3. x86/vmware: Steal time clock for VMware guest
Core steal time support functionality.
4. x86/vmware: Enable steal time accounting
Support for steal time accounting used by update_rq_clock().
5. x86/vmware: Use bool type for vmw_sched_clock
Minor clean up.
Alexey Makhalov (5):
x86/vmware: Make vmware_select_hypercall() __init
x86/vmware: Remove vmware_sched_clock_setup()
x86/vmware: Steal time clock for VMware guest
x86/vmware: Enable steal time accounting
x86/vmware: Use bool type for vmw_sched_clock
Documentation/admin-...
2016 Oct 26
1
[PATCH 3/3] x86/vmware: Add paravirt sched clock
...sm/apic.h>
+#include <asm/timer.h>
#define CPUID_VMWARE_INFO_LEAF 0x40000000
#define VMWARE_HYPERVISOR_MAGIC 0x564D5868
@@ -62,10 +64,46 @@ static unsigned long vmware_get_tsc_khz(void)
}
#ifdef CONFIG_PARAVIRT
+static struct cyc2ns_data vmware_cyc2ns __ro_after_init;
+
+static int vmw_sched_clock __initdata = 1;
+static __init int setup_vmw_sched_clock(char *s)
+{
+ vmw_sched_clock = 0;
+ return 0;
+}
+early_param("no-vmw-sched-clock", setup_vmw_sched_clock);
+
+static unsigned long long vmware_sched_clock(void)
+{
+ unsigned long long ns;
+
+ ns = mul_u64_u32_shr(rdtsc(), vmware_...
2016 Oct 26
5
[PATCH 0/3] x86/vmware guest improvements
This patchset includes several VMware guest improvements:
Alexey Makhalov (3):
x86/vmware: Use tsc_khz value for calibrate_cpu()
x86/vmware: Add basic paravirt ops support
x86/vmware: Add paravirt sched clock
Documentation/kernel-parameters.txt | 4 +++
arch/x86/kernel/cpu/vmware.c | 51 +++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+)
--
2.10.1
2016 Oct 26
5
[PATCH 0/3] x86/vmware guest improvements
This patchset includes several VMware guest improvements:
Alexey Makhalov (3):
x86/vmware: Use tsc_khz value for calibrate_cpu()
x86/vmware: Add basic paravirt ops support
x86/vmware: Add paravirt sched clock
Documentation/kernel-parameters.txt | 4 +++
arch/x86/kernel/cpu/vmware.c | 51 +++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+)
--
2.10.1
2016 Oct 26
0
[PATCH 3/3] x86/vmware: Add paravirt sched clock
...lock kernel parameter is added to switch back to the
> native_sched_clock() implementation.
You are not switching back. The parameter is used to disable the paravirt
sched clock.
> #ifdef CONFIG_PARAVIRT
> +static struct cyc2ns_data vmware_cyc2ns __ro_after_init;
> +
> +static int vmw_sched_clock __initdata = 1;
> +static __init int setup_vmw_sched_clock(char *s)
Please stop glueing a variable to a function w/o a new line between
them. It's just stopping the reading flow.
> +{
> + vmw_sched_clock = 0;
> + return 0;
> +}
> +early_param("no-vmw-sched-clock",...
2016 Oct 27
0
[RESEND PATCH 3/3] x86/vmware: Add paravirt sched clock
...c2ns.cyc2ns_shift);
> + ns -= vmware_cyc2ns.cyc2ns_offset;
> + return ns;
> +}
> +
> static void __init vmware_paravirt_ops_setup(void)
> {
> pv_info.name = "VMware hypervisor";
> pv_cpu_ops.io_delay = paravirt_nop;
> +
> + if (vmware_tsc_khz && vmw_sched_clock) {
> + unsigned long long tsc_now = rdtsc();
> +
> + clocks_calc_mult_shift(&vmware_cyc2ns.cyc2ns_mul,
> + &vmware_cyc2ns.cyc2ns_shift,
> + vmware_tsc_khz,
> + NSEC_PER_MSEC, 0);
> + vmware_cyc2ns.cyc2ns_offset =
> + mul_u64_u32_shr...
2016 Oct 27
5
[RESEND PATCH 1/3] x86/vmware: Use tsc_khz value for calibrate_cpu()
After aa297292d708, there are separate native calibrations for cpu_khz and
tsc_khz. The code sets x86_platform.calibrate_cpu to native_calibrate_cpu()
which looks in cpuid leaf 0x16 or msrs for the cpu frequency. Since we keep
the tsc_khz constant (even after vmotion), the cpu_khz and tsc_khz may
start diverging.
tsc_init() now does
cpu_khz = x86_platform.calibrate_cpu();
tsc_khz =
2016 Oct 27
5
[RESEND PATCH 1/3] x86/vmware: Use tsc_khz value for calibrate_cpu()
After aa297292d708, there are separate native calibrations for cpu_khz and
tsc_khz. The code sets x86_platform.calibrate_cpu to native_calibrate_cpu()
which looks in cpuid leaf 0x16 or msrs for the cpu frequency. Since we keep
the tsc_khz constant (even after vmotion), the cpu_khz and tsc_khz may
start diverging.
tsc_init() now does
cpu_khz = x86_platform.calibrate_cpu();
tsc_khz =
2016 Oct 27
0
[RESEND PATCH 3/3] x86/vmware: Add paravirt sched clock
...+#define pr_fmt(fmt) "vmware: " fmt
#define CPUID_VMWARE_INFO_LEAF 0x40000000
#define VMWARE_HYPERVISOR_MAGIC 0x564D5868
@@ -62,10 +67,46 @@ static unsigned long vmware_get_tsc_khz(void)
}
#ifdef CONFIG_PARAVIRT
+static struct cyc2ns_data vmware_cyc2ns __ro_after_init;
+static int vmw_sched_clock __initdata = 1;
+
+static __init int setup_vmw_sched_clock(char *s)
+{
+ vmw_sched_clock = 0;
+ return 0;
+}
+early_param("no-vmw-sched-clock", setup_vmw_sched_clock);
+
+static unsigned long long vmware_sched_clock(void)
+{
+ unsigned long long ns;
+
+ ns = mul_u64_u32_shr(rdtsc(), vmwar...
2016 Oct 28
3
[PATCH v3 0/3] x86/vmware guest improvements
Thanks Thomas for the valuable comments.
Changelog for the updated patchset:
v1->v2 - Update pvinfo.name.
v2->v3 - Address comments from Thomas G,
* Created separate function: vmware_sched_clock_setup() (patch 3/3)
* Updated commit descriptions for 1/3 and 3/3
Alexey Makhalov (3):
x86/vmware: Use tsc_khz value for calibrate_cpu()
x86/vmware: Add basic paravirt ops support
2016 Oct 28
3
[PATCH v3 0/3] x86/vmware guest improvements
Thanks Thomas for the valuable comments.
Changelog for the updated patchset:
v1->v2 - Update pvinfo.name.
v2->v3 - Address comments from Thomas G,
* Created separate function: vmware_sched_clock_setup() (patch 3/3)
* Updated commit descriptions for 1/3 and 3/3
Alexey Makhalov (3):
x86/vmware: Use tsc_khz value for calibrate_cpu()
x86/vmware: Add basic paravirt ops support
2020 Feb 12
0
[PATCH 2/5] x86/vmware: Remove vmware_sched_clock_setup()
...k offset of %llu ns\n", d->cyc2ns_offset);
}
static void __init vmware_paravirt_ops_setup(void)
@@ -141,8 +140,14 @@ static void __init vmware_paravirt_ops_setup(void)
pv_info.name = "VMware hypervisor";
pv_ops.cpu.io_delay = paravirt_nop;
- if (vmware_tsc_khz && vmw_sched_clock)
- vmware_sched_clock_setup();
+ if (vmware_tsc_khz == 0)
+ return;
+
+ vmware_cyc2ns_setup();
+
+ if (vmw_sched_clock)
+ pv_ops.time.sched_clock = vmware_sched_clock;
+
}
#else
#define vmware_paravirt_ops_setup() do {} while (0)
--
2.14.2
2018 Aug 10
0
[PATCH 04/10] x86/paravirt: use a single ops structure
...pr_info("using sched offset of %llu ns\n", d->cyc2ns_offset);
}
static void __init vmware_paravirt_ops_setup(void)
{
pv_info.name = "VMware hypervisor";
- pv_cpu_ops.io_delay = paravirt_nop;
+ pv_ops.pv_cpu_ops.io_delay = paravirt_nop;
if (vmware_tsc_khz && vmw_sched_clock)
vmware_sched_clock_setup();
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 5b2300b818af..610da165aa26 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -292,7 +292,7 @@ static void __init paravirt_ops_setup(void)
pv_info.name = "KVM";
if (kvm_pa...
2018 Aug 10
13
[PATCH 00/10] x86/paravirt: several cleanups
This series removes some no longer needed stuff from paravirt
infrastructure and puts large quantities of paravirt ops under a new
config option PARAVIRT_XXL which is selected by XEN_PV only.
A pvops kernel without XEN_PV being configured is about 2.5% smaller
with this series applied.
tip commit 5800dc5c19f34e6e03b5adab1282535cb102fafd ("x86/paravirt:
Fix spectre-v2 mitigations for
2018 Aug 13
11
[PATCH v2 00/11] x86/paravirt: several cleanups
This series removes some no longer needed stuff from paravirt
infrastructure and puts large quantities of paravirt ops under a new
config option PARAVIRT_XXL which is selected by XEN_PV only.
A pvops kernel without XEN_PV being configured is about 2.5% smaller
with this series applied.
tip commit 5800dc5c19f34e6e03b5adab1282535cb102fafd ("x86/paravirt:
Fix spectre-v2 mitigations for
2017 May 19
13
[PATCH 00/10] paravirt: make amount of paravirtualization configurable
Today paravirtualization is a all-or-nothing game: either a kernel is
compiled with no paravirtualization support at all, or it is supporting
paravirtualized environments like Xen pv-guests or lguest additionally
to some paravirtualized tuning for KVM, Hyperv, VMWare or Xen
HVM-guests.
As support of pv-guests requires quite intrusive pv-hooks (e.g. all
access functions to page table entries,
2017 May 19
13
[PATCH 00/10] paravirt: make amount of paravirtualization configurable
Today paravirtualization is a all-or-nothing game: either a kernel is
compiled with no paravirtualization support at all, or it is supporting
paravirtualized environments like Xen pv-guests or lguest additionally
to some paravirtualized tuning for KVM, Hyperv, VMWare or Xen
HVM-guests.
As support of pv-guests requires quite intrusive pv-hooks (e.g. all
access functions to page table entries,