diff options
| author | Boqun Feng <boqun.feng@gmail.com> | 2020-09-16 11:48:11 +0800 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2020-09-28 08:55:13 +0000 |
| commit | bca6b91dfdd4347d8fe0bb97377dda0cacd51d82 (patch) | |
| tree | d3ae396545293bc6f10334bb4cdd0c7f0684c651 /include/linux/hyperv.h | |
| parent | ef514d3e38edf36764e61fc11366410041598ad9 (diff) | |
Drivers: hv: vmbus: Move virt_to_hvpfn() to hyperv header
There will be more places other than vmbus where we need to calculate
the Hyper-V page PFN from a virtual address, so move virt_to_hvpfn() to
hyperv generic header.
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20200916034817.30282-6-boqun.feng@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'include/linux/hyperv.h')
| -rw-r--r-- | include/linux/hyperv.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 9c19149c0e1a..83456dc181a8 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -14,6 +14,7 @@ #include <uapi/linux/hyperv.h> +#include <linux/mm.h> #include <linux/types.h> #include <linux/scatterlist.h> #include <linux/list.h> @@ -23,6 +24,7 @@ #include <linux/mod_devicetable.h> #include <linux/interrupt.h> #include <linux/reciprocal_div.h> +#include <asm/hyperv-tlfs.h> #define MAX_PAGE_BUFFER_COUNT 32 #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */ @@ -1676,4 +1678,17 @@ struct hyperv_pci_block_ops { extern struct hyperv_pci_block_ops hvpci_block_ops; +static inline unsigned long virt_to_hvpfn(void *addr) +{ + phys_addr_t paddr; + + if (is_vmalloc_addr(addr)) + paddr = page_to_phys(vmalloc_to_page(addr)) + + offset_in_page(addr); + else + paddr = __pa(addr); + + return paddr >> HV_HYP_PAGE_SHIFT; +} + #endif /* _HYPERV_H */ |