search for: sym_hvclock_page

...rt + 2 * PAGE_SIZE; . = SIZEOF_HEADERS; diff --git a/arch/x86/entry/vdso/vdso2c.c b/arch/x86/entry/vdso/vdso2c.c index 491020b..0780a44 100644 --- a/arch/x86/entry/vdso/vdso2c.c +++ b/arch/x86/entry/vdso/vdso2c.c @@ -74,6 +74,7 @@ enum { sym_vvar_page, sym_hpet_page, sym_pvclock_page, + sym_hvclock_page, sym_VDSO_FAKE_SECTION_TABLE_START, sym_VDSO_FAKE_SECTION_TABLE_END, }; @@ -82,6 +83,7 @@ const int special_pages[] = { sym_vvar_page, sym_hpet_page, sym_pvclock_page, + sym_hvclock_page, }; struct vdso_sym { @@ -94,6 +96,7 @@ struct vdso_sym required_syms[] = { [sym_vvar_page] = {...

Hi, Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implemented the required support. Simple sysbench test shows the following results: Before: # time sysbench --test=memory --max-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench --test=memory

Hi, Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implemented the required support. Simple sysbench test shows the following results: Before: # time sysbench --test=memory --max-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench --test=memory

Hi, merge window is about to close so I hope it's OK to make another try here. Changes since v2: - Add explicit READ_ONCE() to not rely on 'volatile' [Andy Lutomirski] - rdtsc() -> rdtsc_ordered() [Andy Lutomirski] - virt_rmb() -> smp_rmb() [Thomas Gleixner, Andy Lutomirski] Thomas, Andy, it seems the only blocker for the series was the ambiguity with TSC page read algorithm.

Hi, merge window is about to close so I hope it's OK to make another try here. Changes since v2: - Add explicit READ_ONCE() to not rely on 'volatile' [Andy Lutomirski] - rdtsc() -> rdtsc_ordered() [Andy Lutomirski] - virt_rmb() -> smp_rmb() [Thomas Gleixner, Andy Lutomirski] Thomas, Andy, it seems the only blocker for the series was the ambiguity with TSC page read algorithm.

Hi, while we're still waiting for a definitive ACK from Microsoft that the algorithm is good for SMP case (as we can't prevent the code in vdso from migrating between CPUs) I'd like to send v2 with some modifications to keep the discussion going. Changes since v1: - Document the TSC page reading protocol [Thomas Gleixner]. - Separate the TSC page reading code from

Hi, while we're still waiting for a definitive ACK from Microsoft that the algorithm is good for SMP case (as we can't prevent the code in vdso from migrating between CPUs) I'd like to send v2 with some modifications to keep the discussion going. Changes since v1: - Document the TSC page reading protocol [Thomas Gleixner]. - Separate the TSC page reading code from

...CLOCKMODE_PVCLOCK)) { > return vmf_insert_pfn_prot(vma, vmf->address, > __pa(pvti) >> PAGE_SHIFT, > - pgprot_decrypted(vma->vm_page_prot)); > + pgprot_decrypted(vma->vm_page_prot), > + true); > } > } else if (sym_offset == image->sym_hvclock_page) { > pfn = hv_get_tsc_pfn(); > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c > index 49a5f1c73b3e..adcb20d9e624 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c > @@ -64,7 +6...

...t;> + pgprot_decrypted(vma- >> >>>>> vm_page_prot), >> >>>>> + true); >> >>>>> } >> >>>>> } else if (sym_offset == image->sym_hvclock_page) { >> >>>>> pfn = hv_get_tsc_pfn(); diff --git >> >>>>> a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c >> >>>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c >> >>>>> index 49a5f1c73b3e..adcb20d9e624 100644 &gt...

...pgprot_decrypted(vma- >>> vm_page_prot)); >>> + pgprot_decrypted(vma- >>> vm_page_prot), >>> + true); >>> } >>> } else if (sym_offset == image->sym_hvclock_page) { >>> pfn = hv_get_tsc_pfn(); >>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c >>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c >>> index 49a5f1c73b3e..adcb20d9e624 100644 >>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c >>>...

...;> vm_page_prot)); >>>>> + pgprot_decrypted(vma- >>>>> vm_page_prot), >>>>> + true); >>>>> } >>>>> } else if (sym_offset == image->sym_hvclock_page) { >>>>> pfn = hv_get_tsc_pfn(); diff --git >>>>> a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c >>>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c >>>>> index 49a5f1c73b3e..adcb20d9e624 100644 >>>>> --- a/drivers/gpu/...