Displaying 6 results from an estimated 6 matches for "hyperv_pcpu_input_arg".
2020 Sep 15
0
[PATCH RFC v1 06/18] x86/hyperv: allocate output arg pages if required
...(+), 5 deletions(-)
>
> diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
> index cac8e4c56261..ebba4be4185d 100644
> --- a/arch/x86/hyperv/hv_init.c
> +++ b/arch/x86/hyperv/hv_init.c
> @@ -45,6 +45,9 @@ EXPORT_SYMBOL_GPL(hv_vp_assist_page);
> void __percpu **hyperv_pcpu_input_arg;
> EXPORT_SYMBOL_GPL(hyperv_pcpu_input_arg);
>
> +void __percpu **hyperv_pcpu_output_arg;
> +EXPORT_SYMBOL_GPL(hyperv_pcpu_output_arg);
> +
> u32 hv_max_vp_index;
> EXPORT_SYMBOL_GPL(hv_max_vp_index);
>
> @@ -75,14 +78,29 @@ static int hv_cpu_init(unsigned int cpu...
2020 Sep 16
0
[PATCH RFC v1 06/18] x86/hyperv: allocate output arg pages if required
.../arch/x86/hyperv/hv_init.c
>> > > index cac8e4c56261..ebba4be4185d 100644
>> > > --- a/arch/x86/hyperv/hv_init.c
>> > > +++ b/arch/x86/hyperv/hv_init.c
>> > > @@ -45,6 +45,9 @@ EXPORT_SYMBOL_GPL(hv_vp_assist_page);
>> > > void __percpu **hyperv_pcpu_input_arg;
>> > > EXPORT_SYMBOL_GPL(hyperv_pcpu_input_arg);
>> > >
>> > > +void __percpu **hyperv_pcpu_output_arg;
>> > > +EXPORT_SYMBOL_GPL(hyperv_pcpu_output_arg);
>> > > +
>> > > u32 hv_max_vp_index;
>> > > EXPORT_SY...
2020 Sep 15
0
[PATCH RFC v1 09/18] x86/hyperv: provide a bunch of helper functions
...ver overrun the 2048 bytes we 'allocated'
for 'counts' above. While 'if (num_pages > HV_DEPOSIT_MAX)' presumably
guarantees that, this is not really obvious.
> + num_allocations++;
> + }
> +
> + local_irq_save(flags);
> +
> + input_page = *this_cpu_ptr(hyperv_pcpu_input_arg);
> +
> + input_page->partition_id = partition_id;
> +
> + /* Populate gpa_page_list - these will fit on the input page */
> + for (i = 0, page_count = 0; i < num_allocations; ++i) {
> + base_pfn = page_to_pfn(pages[i]);
> + for (j = 0; j < counts[i]; ++j, ++page_cou...
2020 Sep 15
0
[PATCH RFC v1 07/18] x86/hyperv: extract partition ID from Microsoft Hypervisor if necessary
...> diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
> index f5c62140f28d..4039302e0ae9 100644
> --- a/arch/x86/include/asm/mshyperv.h
> +++ b/arch/x86/include/asm/mshyperv.h
> @@ -65,6 +65,8 @@ extern void *hv_hypercall_pg;
> extern void __percpu **hyperv_pcpu_input_arg;
> extern void __percpu **hyperv_pcpu_output_arg;
>
> +extern u64 hv_current_partition_id;
> +
> static inline u64 hv_do_hypercall(u64 control, void *input, void *output)
> {
> u64 input_address = input ? virt_to_phys(input) : 0;
> diff --git a/include/asm-generic/h...
2019 Jul 02
0
[PATCH v2 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently
...if (!hv_hypercall_pg)
goto do_native;
@@ -69,6 +69,9 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus,
local_irq_save(flags);
+ if (cpumask_test_cpu(smp_processor_id(), cpus))
+ flush_tlb_func_local(info);
+
flush_pcpu = (struct hv_tlb_flush **)
this_cpu_ptr(hyperv_pcpu_input_arg);
@@ -156,7 +159,7 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus,
if (!(status & HV_HYPERCALL_RESULT_MASK))
return;
do_native:
- native_flush_tlb_others(cpus, info);
+ native_flush_tlb_multi(cpus, info);
}
static u64 hyperv_flush_tlb_others_ex(const struct cpumas...
2019 Jul 02
2
[PATCH v2 0/9] x86: Concurrent TLB flushes
Currently, local and remote TLB flushes are not performed concurrently,
which introduces unnecessary overhead - each INVLPG can take 100s of
cycles. This patch-set allows TLB flushes to be run concurrently: first
request the remote CPUs to initiate the flush, then run it locally, and
finally wait for the remote CPUs to finish their work.
In addition, there are various small optimizations to avoid