From 25727aaed6514b88f98a18862c6f2d65a0b0ec3b Mon Sep 17 00:00:00 2001 From: Michael Kelley Date: Sun, 26 Mar 2023 06:52:05 -0700 Subject: 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 Reviewed-by: Tianyu Lan Link: https://lore.kernel.org/r/1679838727-87310-11-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu --- drivers/hv/Kconfig | 1 - drivers/hv/hv_common.c | 11 ----------- 2 files changed, 12 deletions(-) (limited to 'drivers/hv') 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); -- cgit v1.2.3