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hv_netvsc: Use HV_HYP_PAGE_SIZE for Hyper-V communication

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When communicating with Hyper-V, HV_HYP_PAGE_SIZE should be used since
that's the page size used by Hyper-V and Hyper-V expects all
page-related data using the unit of HY_HYP_PAGE_SIZE, for example, the
"pfn" in hv_page_buffer is actually the HV_HYP_PAGE (i.e. the Hyper-V
page) number.

In order to support guest whose page size is not 4k, we need to make
hv_netvsc always use HV_HYP_PAGE_SIZE for Hyper-V communication.

Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20200916034817.30282-8-boqun.feng@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Boqun Feng
2020-09-16 11:48:13 +08:00
committed by Wei Liu
parent 106dee0840
commit 11d8620e08
3 changed files with 30 additions and 31 deletions
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2
drivers/net/hyperv/netvsc.c
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@@ -794,7 +794,7 @@ static void netvsc_copy_to_send_buf(struct netvsc_device *net_device,
}
for (i = 0; i < page_count; i++) {
char *src = phys_to_virt(pb[i].pfn << PAGE_SHIFT);
char *src = phys_to_virt(pb[i].pfn << HV_HYP_PAGE_SHIFT);
u32 offset = pb[i].offset;
u32 len = pb[i].len;