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Subject[RFC PATCH 1/3] KVM: x86: pass ctxt to fetch helper function
Date
In the following patches, our adress caching struct that's
embedded within struct x86_emulate_ctxt will need to be
accessed

Signed-off-by: Bandan Das <bsd@redhat.com>
---
arch/x86/kvm/x86.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 122410d..17e3d661 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4061,10 +4061,11 @@ gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
}

static int kvm_read_guest_virt_helper(gva_t addr, void *val, unsigned int bytes,
- struct kvm_vcpu *vcpu, u32 access,
+ struct x86_emulate_ctxt *ctxt, u32 access,
struct x86_exception *exception)
{
void *data = val;
+ struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt);
int r = X86EMUL_CONTINUE;

while (bytes) {
@@ -4098,7 +4099,7 @@ static int kvm_fetch_guest_virt(struct x86_emulate_ctxt *ctxt,
struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt);
u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;

- return kvm_read_guest_virt_helper(addr, val, bytes, vcpu,
+ return kvm_read_guest_virt_helper(addr, val, bytes, ctxt,
access | PFERR_FETCH_MASK,
exception);
}
@@ -4110,7 +4111,7 @@ int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt,
struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt);
u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;

- return kvm_read_guest_virt_helper(addr, val, bytes, vcpu, access,
+ return kvm_read_guest_virt_helper(addr, val, bytes, ctxt, access,
exception);
}
EXPORT_SYMBOL_GPL(kvm_read_guest_virt);
@@ -4119,8 +4120,7 @@ static int kvm_read_guest_virt_system(struct x86_emulate_ctxt *ctxt,
gva_t addr, void *val, unsigned int bytes,
struct x86_exception *exception)
{
- struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt);
- return kvm_read_guest_virt_helper(addr, val, bytes, vcpu, 0, exception);
+ return kvm_read_guest_virt_helper(addr, val, bytes, ctxt, 0, exception);
}

int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt,
--
1.8.3.1


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