linux-stable/arch/arm64
Sean Christopherson 537a17b314 KVM: Let/force architectures to deal with arch specific memslot data
Pass the "old" slot to kvm_arch_prepare_memory_region() and force arch
code to handle propagating arch specific data from "new" to "old" when
necessary.  This is a baby step towards dynamically allocating "new" from
the get go, and is a (very) minor performance boost on x86 due to not
unnecessarily copying arch data.

For PPC HV, copy the rmap in the !CREATE and !DELETE paths, i.e. for MOVE
and FLAGS_ONLY.  This is functionally a nop as the previous behavior
would overwrite the pointer for CREATE, and eventually discard/ignore it
for DELETE.

For x86, copy the arch data only for FLAGS_ONLY changes.  Unlike PPC HV,
x86 needs to reallocate arch data in the MOVE case as the size of x86's
allocations depend on the alignment of the memslot's gfn.

Opportunistically tweak kvm_arch_prepare_memory_region()'s param order to
match the "commit" prototype.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
[mss: add missing RISCV kvm_arch_prepare_memory_region() change]
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Message-Id: <67dea5f11bbcfd71e3da5986f11e87f5dd4013f9.1638817639.git.maciej.szmigiero@oracle.com>
2021-12-08 04:24:20 -05:00
..
boot ARM: SoC DT updates for v5.16 2021-11-03 16:56:03 -07:00
configs ARM: defconfig updates for 5.16 2021-11-03 17:07:02 -07:00
crypto crypto: arm64/aes-ccm - avoid by-ref argument for ce_aes_ccm_auth_data 2021-09-17 11:05:11 +08:00
hyperv arm64: hyperv: Initialize hypervisor on boot 2021-08-04 16:54:36 +00:00
include KVM: arm64: Avoid setting the upper 32 bits of TCR_EL2 and CPTR_EL2 to 1 2021-11-25 15:51:25 +00:00
kernel Char/Misc fix for 5.16-rc1 2021-11-11 09:44:29 -08:00
kvm KVM: Let/force architectures to deal with arch specific memslot data 2021-12-08 04:24:20 -05:00
lib Kbuild updates for v5.16 2021-11-08 09:15:45 -08:00
mm kasan: add kasan mode messages when kasan init 2021-11-11 09:34:35 -08:00
net arm64 updates for 5.16 2021-11-01 16:33:53 -07:00
tools Merge branch 'for-next/trbe-errata' into for-next/core 2021-10-29 12:25:33 +01:00
xen xen: allow pv-only hypercalls only with CONFIG_XEN_PV 2021-11-02 08:11:01 -05:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
Kconfig.debug
Kconfig.platforms ARM: SoC drivers for 5.16 2021-11-03 17:00:52 -07:00
Makefile kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00