mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-30 22:03:17 +01:00
Ashish Kalra
0dbb112304
This hypercall is used by the SEV guest to notify a change in the page encryption status to the hypervisor. The hypercall should be invoked only when the encryption attribute is changed from encrypted -> decrypted and vice versa. By default all guest pages are considered encrypted. The hypercall exits to userspace to manage the guest shared regions and integrate with the userspace VMM's migration code. Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Tom Lendacky <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Reviewed-by: Steve Rutherford <[email protected]> Signed-off-by: Brijesh Singh <[email protected]> Signed-off-by: Ashish Kalra <[email protected]> Co-developed-by: Sean Christopherson <[email protected]> Signed-off-by: Sean Christopherson <[email protected]> Co-developed-by: Paolo Bonzini <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]> Message-Id: <90778988e1ee01926ff9cac447aacb745f954c8c.1623174621.git.ashish.kalra@amd.com> Signed-off-by: Paolo Bonzini <[email protected]>
40 lines
1016 B
C
40 lines
1016 B
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _UAPI__LINUX_KVM_PARA_H
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#define _UAPI__LINUX_KVM_PARA_H
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/*
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* This header file provides a method for making a hypercall to the host
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* Architectures should define:
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* - kvm_hypercall0, kvm_hypercall1...
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* - kvm_arch_para_features
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* - kvm_para_available
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*/
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/* Return values for hypercalls */
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#define KVM_ENOSYS 1000
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#define KVM_EFAULT EFAULT
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#define KVM_EINVAL EINVAL
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#define KVM_E2BIG E2BIG
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#define KVM_EPERM EPERM
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#define KVM_EOPNOTSUPP 95
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#define KVM_HC_VAPIC_POLL_IRQ 1
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#define KVM_HC_MMU_OP 2
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#define KVM_HC_FEATURES 3
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#define KVM_HC_PPC_MAP_MAGIC_PAGE 4
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#define KVM_HC_KICK_CPU 5
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#define KVM_HC_MIPS_GET_CLOCK_FREQ 6
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#define KVM_HC_MIPS_EXIT_VM 7
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#define KVM_HC_MIPS_CONSOLE_OUTPUT 8
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#define KVM_HC_CLOCK_PAIRING 9
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#define KVM_HC_SEND_IPI 10
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#define KVM_HC_SCHED_YIELD 11
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#define KVM_HC_MAP_GPA_RANGE 12
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/*
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* hypercalls use architecture specific
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*/
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#include <asm/kvm_para.h>
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#endif /* _UAPI__LINUX_KVM_PARA_H */
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