[PATCH v5 06/16] KVM: x86/xen: add definitions of compat_shared_info, compat_vcpu_info

From: David Woodhouse <dwmw2@infradead.org>
To: kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Ankur Arora <ankur.a.arora@oracle.com>,
	Joao Martins <joao.m.martins@oracle.com>,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Sean Christopherson <seanjc@google.com>,
	graf@amazon.com, iaslan@amazon.de, pdurrant@amazon.com,
	aagch@amazon.com, fandree@amazon.com, hch@infradead.org
Subject: [PATCH v5 06/16] KVM: x86/xen: add definitions of compat_shared_info, compat_vcpu_info
Date: Mon, 11 Jan 2021 19:57:15 +0000	[thread overview]
Message-ID: <20210111195725.4601-7-dwmw2@infradead.org> (raw)
In-Reply-To: <20210111195725.4601-1-dwmw2@infradead.org>

From: David Woodhouse <dwmw@amazon.co.uk>

There aren't a lot of differences for the things that the kernel needs
to care about, but there are a few.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---
 arch/x86/kvm/xen.h | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/x86/kvm/xen.h b/arch/x86/kvm/xen.h
index d06b5afcc1f2..317c1325dade 100644
--- a/arch/x86/kvm/xen.h
+++ b/arch/x86/kvm/xen.h
@@ -20,4 +20,40 @@ static inline bool kvm_xen_hypercall_enabled(struct kvm *kvm)
 		KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL;
 }
 
+
+/* 32-bit compatibility definitions, also used natively in 32-bit build */
+#include <asm/pvclock-abi.h>
+#include <asm/xen/interface.h>
+
+struct compat_arch_vcpu_info {
+	unsigned int cr2;
+	unsigned int pad[5];
+};
+
+struct compat_vcpu_info {
+        uint8_t evtchn_upcall_pending;
+        uint8_t evtchn_upcall_mask;
+        uint32_t evtchn_pending_sel;
+        struct compat_arch_vcpu_info arch;
+        struct pvclock_vcpu_time_info time;
+}; /* 64 bytes (x86) */
+
+struct compat_arch_shared_info {
+	unsigned int max_pfn;
+	unsigned int pfn_to_mfn_frame_list_list;
+	unsigned int nmi_reason;
+	unsigned int p2m_cr3;
+	unsigned int p2m_vaddr;
+	unsigned int p2m_generation;
+	uint32_t wc_sec_hi;
+};
+
+struct compat_shared_info {
+	struct compat_vcpu_info vcpu_info[MAX_VIRT_CPUS];
+	uint32_t evtchn_pending[32];
+	uint32_t evtchn_mask[32];
+	struct pvclock_wall_clock wc;
+	struct compat_arch_shared_info arch;
+};
+
 #endif /* __ARCH_X86_KVM_XEN_H__ */
-- 
2.29.2

