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| author | K. Y. Srinivasan <kys@microsoft.com> | 2018-05-17 00:53:34 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-05-19 14:23:18 +0300 |
| commit | 9a2d78e291a7dea0ae4b4a06ce6bbbe4f1ab7c13 (patch) | |
| tree | e7fe1e5c018f9f796b1c0dae27cabb770cb9f17e /arch/x86/hyperv/mmu.c | |
| parent | 800b8f03fdc8d66885ff03de531285526a4ca0d4 (diff) | |
| download | linux-9a2d78e291a7dea0ae4b4a06ce6bbbe4f1ab7c13.tar.xz | |
X86/Hyper-V: Consolidate the allocation of the hypercall input page
Consolidate the allocation of the hypercall input page.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Cc: olaf@aepfle.de
Cc: sthemmin@microsoft.com
Cc: gregkh@linuxfoundation.org
Cc: jasowang@redhat.com
Cc: Michael.H.Kelley@microsoft.com
Cc: hpa@zytor.com
Cc: apw@canonical.com
Cc: devel@linuxdriverproject.org
Cc: vkuznets@redhat.com
Link: https://lkml.kernel.org/r/20180516215334.6547-5-kys@linuxonhyperv.com
Diffstat (limited to 'arch/x86/hyperv/mmu.c')
| -rw-r--r-- | arch/x86/hyperv/mmu.c | 30 |
1 files changed, 6 insertions, 24 deletions
diff --git a/arch/x86/hyperv/mmu.c b/arch/x86/hyperv/mmu.c index c9cd28f0bae4..5f053d7d1bd9 100644 --- a/arch/x86/hyperv/mmu.c +++ b/arch/x86/hyperv/mmu.c @@ -32,9 +32,6 @@ struct hv_flush_pcpu_ex { /* Each gva in gva_list encodes up to 4096 pages to flush */ #define HV_TLB_FLUSH_UNIT (4096 * PAGE_SIZE) -static struct hv_flush_pcpu __percpu **pcpu_flush; - -static struct hv_flush_pcpu_ex __percpu **pcpu_flush_ex; /* * Fills in gva_list starting from offset. Returns the number of items added. @@ -77,7 +74,7 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus, trace_hyperv_mmu_flush_tlb_others(cpus, info); - if (!pcpu_flush || !hv_hypercall_pg) + if (!hv_hypercall_pg) goto do_native; if (cpumask_empty(cpus)) @@ -85,10 +82,8 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus, local_irq_save(flags); - flush_pcpu = this_cpu_ptr(pcpu_flush); - - if (unlikely(!*flush_pcpu)) - *flush_pcpu = page_address(alloc_page(GFP_ATOMIC)); + flush_pcpu = (struct hv_flush_pcpu **) + this_cpu_ptr(hyperv_pcpu_input_arg); flush = *flush_pcpu; @@ -164,7 +159,7 @@ static void hyperv_flush_tlb_others_ex(const struct cpumask *cpus, trace_hyperv_mmu_flush_tlb_others(cpus, info); - if (!pcpu_flush_ex || !hv_hypercall_pg) + if (!hv_hypercall_pg) goto do_native; if (cpumask_empty(cpus)) @@ -172,10 +167,8 @@ static void hyperv_flush_tlb_others_ex(const struct cpumask *cpus, local_irq_save(flags); - flush_pcpu = this_cpu_ptr(pcpu_flush_ex); - - if (unlikely(!*flush_pcpu)) - *flush_pcpu = page_address(alloc_page(GFP_ATOMIC)); + flush_pcpu = (struct hv_flush_pcpu_ex **) + this_cpu_ptr(hyperv_pcpu_input_arg); flush = *flush_pcpu; @@ -257,14 +250,3 @@ void hyperv_setup_mmu_ops(void) pv_mmu_ops.flush_tlb_others = hyperv_flush_tlb_others_ex; } } - -void hyper_alloc_mmu(void) -{ - if (!(ms_hyperv.hints & HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED)) - return; - - if (!(ms_hyperv.hints & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) - pcpu_flush = alloc_percpu(struct hv_flush_pcpu *); - else - pcpu_flush_ex = alloc_percpu(struct hv_flush_pcpu_ex *); -} |