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Merge branch 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 hyperv updates from Ingo Molnar:
 "Misc updates related to page size abstractions within the HyperV code,
  in preparation for future features"

* 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  drivers: hv: vmbus: Replace page definition with Hyper-V specific one
  x86/hyperv: Add functions to allocate/deallocate page for Hyper-V
  x86/hyperv: Create and use Hyper-V page definitions
This commit is contained in:
Linus Torvalds
2019-09-16 19:39:00 -07:00
parent 6f24671485 83527ef7ab
commit e2bddc20b5
4 changed files with 33 additions and 6 deletions
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14
arch/x86/hyperv/hv_init.c
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@@ -37,6 +37,20 @@ EXPORT_SYMBOL_GPL(hyperv_pcpu_input_arg);
u32 hv_max_vp_index;
EXPORT_SYMBOL_GPL(hv_max_vp_index);
void *hv_alloc_hyperv_page(void)
{
BUILD_BUG_ON(PAGE_SIZE != HV_HYP_PAGE_SIZE);
return (void *)__get_free_page(GFP_KERNEL);
}
EXPORT_SYMBOL_GPL(hv_alloc_hyperv_page);
void hv_free_hyperv_page(unsigned long addr)
{
free_page(addr);
}
EXPORT_SYMBOL_GPL(hv_free_hyperv_page);
static int hv_cpu_init(unsigned int cpu)
{
u64 msr_vp_index;