KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated
stable inclusion from stable-v4.19.236 commit 5f051d32b03f08a0507ac1afd7b9c0a30c8e5d59 category: bugfix bugzilla: 186460, https://gitee.com/src-openeuler/kernel/issues/I53MHA CVE: CVE-2022-23960 -------------------------------- commit a5905d6af492ee6a4a2205f0d550b3f931b03d03 upstream. KVM allows the guest to discover whether the ARCH_WORKAROUND SMCCC are implemented, and to preserve that state during migration through its firmware register interface. Add the necessary boiler plate for SMCCC_ARCH_WORKAROUND_3. Reviewed-by:Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by:
Catalin Marinas <catalin.marinas@arm.com> [ kvm code moved to virt/kvm/arm, removed fw regs ABI. Added 32bit stub ] Signed-off-by:
James Morse <james.morse@arm.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Conflicts: arch/arm/include/asm/kvm_host.h arch/arm64/include/asm/kvm_host.h virt/kvm/arm/psci.c Signed-off-by:
Chen Jiahao <chenjiahao16@huawei.com> Reviewed-by:
Hanjun Guo <guohanjun@huawei.com> Reviewed-by:
Liao Chang <liaochang1@huawei.com> Signed-off-by:
Yongqiang Liu <liuyongqiang13@huawei.com>
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