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| author | Michael Kelley <mikelley@microsoft.com> | 2023-03-26 06:52:05 -0700 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2023-04-17 19:19:04 +0000 |
| commit | 25727aaed6514b88f98a18862c6f2d65a0b0ec3b (patch) | |
| tree | 626e8292190c145a2155c74574f5a09b0c090f40 /drivers/hv | |
| parent | bb862397f48fc79a1ea31b83a0bd8f1f913b4ab6 (diff) | |
| download | linux-25727aaed6514b88f98a18862c6f2d65a0b0ec3b.tar.gz linux-25727aaed6514b88f98a18862c6f2d65a0b0ec3b.tar.bz2 linux-25727aaed6514b88f98a18862c6f2d65a0b0ec3b.zip | |
hv_netvsc: Remove second mapping of send and recv buffers
With changes to how Hyper-V guest VMs flip memory between private
(encrypted) and shared (decrypted), creating a second kernel virtual
mapping for shared memory is no longer necessary. Everything needed
for the transition to shared is handled by set_memory_decrypted().
As such, remove the code to create and manage the second
mapping for the pre-allocated send and recv buffers. This mapping
is the last user of hv_map_memory()/hv_unmap_memory(), so delete
these functions as well. Finally, hv_map_memory() is the last
user of vmap_pfn() in Hyper-V guest code, so remove the Kconfig
selection of VMAP_PFN.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Link: https://lore.kernel.org/r/1679838727-87310-11-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/hv/hv_common.c | 11 |
2 files changed, 0 insertions, 12 deletions
diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig index 47132b30b7ee..94982f08b661 100644 --- a/drivers/hv/Kconfig +++ b/drivers/hv/Kconfig @@ -8,7 +8,6 @@ config HYPERV || (ACPI && ARM64 && !CPU_BIG_ENDIAN) select PARAVIRT select X86_HV_CALLBACK_VECTOR if X86 - select VMAP_PFN select OF_EARLY_FLATTREE if OF help Select this option to run Linux as a Hyper-V client operating diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c index 52a6f89ccdbd..6d40b6c7b23b 100644 --- a/drivers/hv/hv_common.c +++ b/drivers/hv/hv_common.c @@ -311,14 +311,3 @@ u64 __weak hv_ghcb_hypercall(u64 control, void *input, void *output, u32 input_s return HV_STATUS_INVALID_PARAMETER; } EXPORT_SYMBOL_GPL(hv_ghcb_hypercall); - -void __weak *hv_map_memory(void *addr, unsigned long size) -{ - return NULL; -} -EXPORT_SYMBOL_GPL(hv_map_memory); - -void __weak hv_unmap_memory(void *addr) -{ -} -EXPORT_SYMBOL_GPL(hv_unmap_memory); |