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Message-ID: <20240710234222.2333120-7-jthoughton@google.com>
Date: Wed, 10 Jul 2024 23:42:10 +0000
From: James Houghton <jthoughton@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>
Cc: Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>,
James Morse <james.morse@....com>, Suzuki K Poulose <suzuki.poulose@....com>,
Zenghui Yu <yuzenghui@...wei.com>, Sean Christopherson <seanjc@...gle.com>, Shuah Khan <shuah@...nel.org>,
Peter Xu <peterx@...hat.org>, Axel Rasmussen <axelrasmussen@...gle.com>,
David Matlack <dmatlack@...gle.com>, James Houghton <jthoughton@...gle.com>, kvm@...r.kernel.org,
linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev
Subject: [RFC PATCH 06/18] KVM: Add KVM_MEMORY_EXIT_FLAG_USERFAULT
This is needed to support returning to userspace when a vCPU attempts to
access a userfault gfn.
Signed-off-by: James Houghton <jthoughton@...gle.com>
---
include/uapi/linux/kvm.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index c84c24a9678e..6aa99b4587c6 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -429,6 +429,7 @@ struct kvm_run {
/* KVM_EXIT_MEMORY_FAULT */
struct {
#define KVM_MEMORY_EXIT_FLAG_PRIVATE (1ULL << 3)
+#define KVM_MEMORY_EXIT_FLAG_USERFAULT (1ULL << 4)
__u64 flags;
__u64 gpa;
__u64 size;
--
2.45.2.993.g49e7a77208-goog
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