linux-kernel - [PATCH 05/19] KVM: selftests: Use "standard" min virtual address for Hyper-V pages

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Date:   Tue, 22 Jun 2021 13:05:15 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>
Cc:     David Hildenbrand <david@...hat.com>,
        Cornelia Huck <cohuck@...hat.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Peter Xu <peterx@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Peter Shier <pshier@...gle.com>
Subject: [PATCH 05/19] KVM: selftests: Use "standard" min virtual address for
 Hyper-V pages

Use the de facto standard minimum virtual address for Hyper-V's hcall
params page.  It's the allocator's job to not double-allocate memory,
i.e. there's no reason to force different regions for the params vs.
hcall page.  This will allow adding a page allocation helper with a
"standard" minimum address.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 tools/testing/selftests/kvm/x86_64/hyperv_features.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_features.c b/tools/testing/selftests/kvm/x86_64/hyperv_features.c
index 030c9447cb90..ad7ee06fa71e 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_features.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_features.c
@@ -629,7 +629,7 @@ int main(void)
 	hcall_page = vm_vaddr_alloc(vm, 2 * getpagesize(), 0x10000, 0, 0);
 	memset(addr_gva2hva(vm, hcall_page), 0x0, 2 * getpagesize());
 
-	hcall_params = vm_vaddr_alloc(vm, getpagesize(), 0x20000, 0, 0);
+	hcall_params = vm_vaddr_alloc(vm, getpagesize(), 0x10000, 0, 0);
 	memset(addr_gva2hva(vm, hcall_params), 0x0, getpagesize());
 
 	vcpu_args_set(vm, VCPU_ID, 2, addr_gva2gpa(vm, hcall_page), hcall_params);
-- 
2.32.0.288.g62a8d224e6-goog