Displaying 4 results from an estimated 4 matches for "gethz".
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ethz
2016 Oct 20
0
[PATCH] x86/vmware: Read tsc_khz only once - at boot time
...ong vmware_tsc_khz __ro_after_init;
+
static inline int __vmware_platform(void)
{
uint32_t eax, ebx, ecx, edx;
@@ -57,35 +59,32 @@ static inline int __vmware_platform(void)
static unsigned long vmware_get_tsc_khz(void)
{
- uint64_t tsc_hz, lpj;
- uint32_t eax, ebx, ecx, edx;
-
- VMWARE_PORT(GETHZ, eax, ebx, ecx, edx);
-
- tsc_hz = eax | (((uint64_t)ebx) << 32);
- do_div(tsc_hz, 1000);
- BUG_ON(tsc_hz >> 32);
- pr_info("TSC freq read from hypervisor : %lu.%03lu MHz\n",
- (unsigned long) tsc_hz / 1000,
- (unsigned long) tsc_hz % 1000);
-
- if (!preset_lpj) {
- lpj...
2016 Oct 20
0
[PATCH] x86/vmware: Read tsc_khz only once - at boot time
...ong vmware_tsc_khz __ro_after_init;
+
static inline int __vmware_platform(void)
{
uint32_t eax, ebx, ecx, edx;
@@ -57,35 +59,32 @@ static inline int __vmware_platform(void)
static unsigned long vmware_get_tsc_khz(void)
{
- uint64_t tsc_hz, lpj;
- uint32_t eax, ebx, ecx, edx;
-
- VMWARE_PORT(GETHZ, eax, ebx, ecx, edx);
-
- tsc_hz = eax | (((uint64_t)ebx) << 32);
- do_div(tsc_hz, 1000);
- BUG_ON(tsc_hz >> 32);
- pr_info("TSC freq read from hypervisor : %lu.%03lu MHz\n",
- (unsigned long) tsc_hz / 1000,
- (unsigned long) tsc_hz % 1000);
-
- if (!preset_lpj) {
- lpj...
2016 Oct 04
0
[PATCH] x86/vmware: Skip lapic calibration on VMware.
...#include <asm/div64.h>
#include <asm/x86_init.h>
#include <asm/hypervisor.h>
+#include <asm/apic.h>
#define CPUID_VMWARE_INFO_LEAF 0x40000000
#define VMWARE_HYPERVISOR_MAGIC 0x564D5868
@@ -82,10 +83,17 @@ static void __init vmware_platform_setup(void)
VMWARE_PORT(GETHZ, eax, ebx, ecx, edx);
- if (ebx != UINT_MAX)
+ if (ebx != UINT_MAX) {
x86_platform.calibrate_tsc = vmware_get_tsc_khz;
- else
+#ifdef CONFIG_X86_LOCAL_APIC
+ /* Skip lapic calibration since we know the bus frequency. */
+ lapic_timer_frequency = ecx / HZ;
+ pr_info("Host bus clock spee...
2016 Oct 04
0
[PATCH] x86/vmware: Skip lapic calibration on VMware.
...#include <asm/div64.h>
#include <asm/x86_init.h>
#include <asm/hypervisor.h>
+#include <asm/apic.h>
#define CPUID_VMWARE_INFO_LEAF 0x40000000
#define VMWARE_HYPERVISOR_MAGIC 0x564D5868
@@ -82,10 +83,17 @@ static void __init vmware_platform_setup(void)
VMWARE_PORT(GETHZ, eax, ebx, ecx, edx);
- if (ebx != UINT_MAX)
+ if (ebx != UINT_MAX) {
x86_platform.calibrate_tsc = vmware_get_tsc_khz;
- else
+#ifdef CONFIG_X86_LOCAL_APIC
+ /* Skip lapic calibration since we know the bus frequency. */
+ lapic_timer_frequency = ecx / HZ;
+ pr_info("Host bus clock spee...