search for: native_write_msr_saf

Hello, This series of patches integrates msr.h header. What it really does, is a series of steps to allow us to get rid of duplicate code between i386 and x86_64 versions With this done, achieving paravirt for x86_64 gets really easy, just a couple of extra code. The first patch was already sent a while ago, but was not yet pushed to any tree , to my knowledge. So it is sent again. Also,

Hello, This series of patches integrates msr.h header. What it really does, is a series of steps to allow us to get rid of duplicate code between i386 and x86_64 versions With this done, achieving paravirt for x86_64 gets really easy, just a couple of extra code. The first patch was already sent a while ago, but was not yet pushed to any tree , to my knowledge. So it is sent again. Also,

...x, + unsigned int *ecx, unsigned int *edx) +{ + __asm__("cpuid" + : "=a" (*eax), + "=b" (*ebx), + "=c" (*ecx), + "=d" (*edx) + : "0" (*eax), "2" (*ecx)); +} + +/* wrmsr with exception handling */ +static inline int native_write_msr_safe(unsigned int msr, unsigned long val) +{ + int err; + asm volatile("2: wrmsr ; xorl %0,%0\n" + "1:\n\t" + ".section .fixup,\"ax\"\n\t" + "3: movl %4,%0 ; jmp 1b\n\t" + ".previous\n\t" + ".section __ex_t...

...x, + unsigned int *ecx, unsigned int *edx) +{ + __asm__("cpuid" + : "=a" (*eax), + "=b" (*ebx), + "=c" (*ecx), + "=d" (*edx) + : "0" (*eax), "2" (*ecx)); +} + +/* wrmsr with exception handling */ +static inline int native_write_msr_safe(unsigned int msr, unsigned long val) +{ + int err; + asm volatile("2: wrmsr ; xorl %0,%0\n" + "1:\n\t" + ".section .fixup,\"ax\"\n\t" + "3: movl %4,%0 ; jmp 1b\n\t" + ".previous\n\t" + ".section __ex_t...

Windows 2k8 R2 guest with updated virtio drivers is idle inside but on the host qemu-kvm process uses 7-15% cpu. Things that have been tried without any significant success - removed tablet device - manually set cpu topology for cores per socket Is it just me or the qemu-kvm has little tolerance with windows?

Windows 2k8 R2 guest with updated virtio drivers is idle inside but on the host qemu-kvm process uses 7-15% cpu. Things that have been tried without any significant success - removed tablet device - manually set cpu topology for cores per socket Is it just me or the qemu-kvm has little tolerance with windows?

Avi, Hope this series is okay now. Thanks for the testing

...lock.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index ddee040..4bc1be5 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -133,6 +133,7 @@ static int kvm_register_clock(void) return native_write_msr_safe(MSR_KVM_SYSTEM_TIME, low, high); } +#ifdef CONFIG_X86_LOCAL_APIC static void kvm_setup_secondary_clock(void) { /* @@ -143,6 +144,7 @@ static void kvm_setup_secondary_clock(void) /* ok, done with our trickery, call native */ setup_secondary_APIC_clock(); } +#endif /* * After the cl...

...kernel/paravirt.c > index 58bcfb67c01f..f68e48f5f6c2 100644 > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -351,9 +351,7 @@ __visible struct pv_cpu_ops pv_cpu_ops = { > .wbinvd = native_wbinvd, > .read_msr = native_read_msr_safe, > .write_msr = native_write_msr_safe, > - .read_tsc = native_read_tsc, > .read_pmc = native_read_pmc, > - .read_tscp = native_read_tscp, > .load_tr_desc = native_load_tr_desc, > .set_ldt = native_set_ldt, > .load_gdt = native_load_gdt, > diff --git a/arch/x86/kernel/paravirt_patch_32.c b/arch/x86/kernel/p...

...kernel/paravirt.c > index 58bcfb67c01f..f68e48f5f6c2 100644 > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -351,9 +351,7 @@ __visible struct pv_cpu_ops pv_cpu_ops = { > .wbinvd = native_wbinvd, > .read_msr = native_read_msr_safe, > .write_msr = native_write_msr_safe, > - .read_tsc = native_read_tsc, > .read_pmc = native_read_pmc, > - .read_tscp = native_read_tscp, > .load_tr_desc = native_load_tr_desc, > .set_ldt = native_set_ldt, > .load_gdt = native_load_gdt, > diff --git a/arch/x86/kernel/paravirt_patch_32.c b/arch/x86/kernel/p...

Hi folks, With this series, the bulk of the work of pvops64 is done. Here, I integrate most of the paravirt.c and paravirt.h files, making them applicable to both architectures. CONFIG_PARAVIRT is _not_ present yet. Basically, this code is missing page table integration (patches currently being worked on by Jeremy). Enjoy

Hi folks, With this series, the bulk of the work of pvops64 is done. Here, I integrate most of the paravirt.c and paravirt.h files, making them applicable to both architectures. CONFIG_PARAVIRT is _not_ present yet. Basically, this code is missing page table integration (patches currently being worked on by Jeremy). Enjoy

...write_cr4 = native_write_cr4, - .save_fl = native_save_fl, - .restore_fl = native_restore_fl, - .irq_disable = native_irq_disable, - .irq_enable = native_irq_enable, - .safe_halt = native_safe_halt, - .halt = native_halt, - .wbinvd = native_wbinvd, - .read_msr = native_read_msr_safe, - .write_msr = native_write_msr_safe, - .read_tsc = native_read_tsc, - .read_pmc = native_read_pmc, - .sched_clock = native_sched_clock, - .get_cpu_khz = native_calculate_cpu_khz, - .load_tr_desc = native_load_tr_desc, - .set_ldt = native_set_ldt, - .load_gdt = native_load_gdt, - .load_idt = native_load_idt, - .store_gdt = native_sto...

...write_cr4 = native_write_cr4, - .save_fl = native_save_fl, - .restore_fl = native_restore_fl, - .irq_disable = native_irq_disable, - .irq_enable = native_irq_enable, - .safe_halt = native_safe_halt, - .halt = native_halt, - .wbinvd = native_wbinvd, - .read_msr = native_read_msr_safe, - .write_msr = native_write_msr_safe, - .read_tsc = native_read_tsc, - .read_pmc = native_read_pmc, - .sched_clock = native_sched_clock, - .get_cpu_khz = native_calculate_cpu_khz, - .load_tr_desc = native_load_tr_desc, - .set_ldt = native_set_ldt, - .load_gdt = native_load_gdt, - .load_idt = native_load_idt, - .store_gdt = native_sto...

...write_cr4 = native_write_cr4, - .save_fl = native_save_fl, - .restore_fl = native_restore_fl, - .irq_disable = native_irq_disable, - .irq_enable = native_irq_enable, - .safe_halt = native_safe_halt, - .halt = native_halt, - .wbinvd = native_wbinvd, - .read_msr = native_read_msr_safe, - .write_msr = native_write_msr_safe, - .read_tsc = native_read_tsc, - .read_pmc = native_read_pmc, - .sched_clock = native_sched_clock, - .get_cpu_khz = native_calculate_cpu_khz, - .load_tr_desc = native_load_tr_desc, - .set_ldt = native_set_ldt, - .load_gdt = native_load_gdt, - .load_idt = native_load_idt, - .store_gdt = native_sto...

...write_cr4 = native_write_cr4, - .save_fl = native_save_fl, - .restore_fl = native_restore_fl, - .irq_disable = native_irq_disable, - .irq_enable = native_irq_enable, - .safe_halt = native_safe_halt, - .halt = native_halt, - .wbinvd = native_wbinvd, - .read_msr = native_read_msr_safe, - .write_msr = native_write_msr_safe, - .read_tsc = native_read_tsc, - .read_pmc = native_read_pmc, - .sched_clock = native_sched_clock, - .get_cpu_khz = native_calculate_cpu_khz, - .load_tr_desc = native_load_tr_desc, - .set_ldt = native_set_ldt, - .load_gdt = native_load_gdt, - .load_idt = native_load_idt, - .store_gdt = native_sto...

...= native_write_cr0, - .write_cr4 = native_write_cr4, -#ifdef CONFIG_X86_64 - .read_cr8 = native_read_cr8, - .write_cr8 = native_write_cr8, -#endif - .wbinvd = native_wbinvd, - .read_msr = native_read_msr, - .write_msr = native_write_msr, - .read_msr_safe = native_read_msr_safe, - .write_msr_safe = native_write_msr_safe, - .read_pmc = native_read_pmc, - .load_tr_desc = native_load_tr_desc, - .set_ldt = native_set_ldt, - .load_gdt = native_load_gdt, - .load_idt = native_load_idt, - .store_tr = native_store_tr, - .load_tls = native_load_tls, -#ifdef CONFIG_X86_64 - .load_gs_index = native_load_gs_index, -#endif - ....

...write_cr4 = native_write_cr4, - .save_fl = native_save_fl, - .restore_fl = native_restore_fl, - .irq_disable = native_irq_disable, - .irq_enable = native_irq_enable, - .safe_halt = native_safe_halt, - .halt = native_halt, - .wbinvd = native_wbinvd, - .read_msr = native_read_msr_safe, - .write_msr = native_write_msr_safe, - .read_tsc = native_read_tsc, - .read_pmc = native_read_pmc, - .sched_clock = native_sched_clock, - .get_cpu_khz = native_calculate_cpu_khz, - .load_tr_desc = native_load_tr_desc, - .set_ldt = native_set_ldt, - .load_gdt = native_load_gdt, - .load_idt = native_load_idt, - .store_gdt = native_sto...

...write_cr4 = native_write_cr4, - .save_fl = native_save_fl, - .restore_fl = native_restore_fl, - .irq_disable = native_irq_disable, - .irq_enable = native_irq_enable, - .safe_halt = native_safe_halt, - .halt = native_halt, - .wbinvd = native_wbinvd, - .read_msr = native_read_msr_safe, - .write_msr = native_write_msr_safe, - .read_tsc = native_read_tsc, - .read_pmc = native_read_pmc, - .sched_clock = native_sched_clock, - .get_cpu_khz = native_calculate_cpu_khz, - .load_tr_desc = native_load_tr_desc, - .set_ldt = native_set_ldt, - .load_gdt = native_load_gdt, - .load_idt = native_load_idt, - .store_gdt = native_sto...

Respin of the paravirt clock patch series. On the host side the kvm paravirt clock is made compatible with the xen clock. On the guest side some xen code has been factored out into a separate source file shared by both kvm and xen clock implementations. This time it should work ok for kvm smp guests ;) cheers, Gerd