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author | 2019-10-13 00:30:21 +0000 | |
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committer | 2019-10-15 17:25:17 -0700 | |
commit | 77ffe33363c02c51c70303d6b79bab70451ba83e (patch) | |
tree | af496e4a9564202b3d48e411fa7e159cdf4c1fa9 /net/core/dev.c | |
parent | Merge branch 'mlxsw-Add-support-for-400Gbps-50Gbps-per-lane-link-modes' (diff) | |
download | linux-dev-77ffe33363c02c51c70303d6b79bab70451ba83e.tar.xz linux-dev-77ffe33363c02c51c70303d6b79bab70451ba83e.zip |
hv_sock: use HV_HYP_PAGE_SIZE for Hyper-V communication
Current code assumes PAGE_SIZE (the guest page size) is equal
to the page size used to communicate with Hyper-V (which is
always 4K). While this assumption is true on x86, it may not
be true for Hyper-V on other architectures. For example,
Linux on ARM64 may have PAGE_SIZE of 16K or 64K. A new symbol,
HV_HYP_PAGE_SIZE, has been previously introduced to use when
the Hyper-V page size is intended instead of the guest page size.
Make this code work on non-x86 architectures by using the new
HV_HYP_PAGE_SIZE symbol instead of PAGE_SIZE, where appropriate.
Also replace the now redundant PAGE_SIZE_4K with HV_HYP_PAGE_SIZE.
The change has no effect on x86, but lays the groundwork to run
on ARM64 and others.
Signed-off-by: Himadri Pandya <himadrispandya@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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