linux-kernel - [PATCH RFC 1/8] KVM: SVM: fix: calculate end instead of passing size

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Date:   Fri, 27 Jan 2023 02:52:30 +0000
From:   Jarkko Sakkinen <jarkko@...fian.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>
Cc:     Harald Hoyer <harald@...fian.com>, Tom Dohrmann <erbse.13@....de>,
        Ashish Kalra <ashish.kalra@....com>,
        Michael Roth <michael.roth@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Jarkko Sakkinen <jarkko@...fian.com>,
        kvm@...r.kernel.org (open list:KERNEL VIRTUAL MACHINE FOR X86 (KVM/x86)),
        linux-kernel@...r.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND
        64-BIT))
Subject: [PATCH RFC 1/8] KVM: SVM: fix: calculate end instead of passing size

From: Tom Dohrmann <erbse.13@....de>

The third parameter of `kvm_vm_do_hva_range_op` doesn't take the size
of the range, but the end of the range.

Signed-off-by: Tom Dohrmann <erbse.13@....de>
Link: https://lore.kernel.org/lkml/Y6Sgwp%2FBofzCUrQe@notebook/
Signed-off-by: Jarkko Sakkinen <jarkko@...fian.com>
---
 arch/x86/kvm/svm/sev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 855f5e702240..d3468d1533bd 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -500,7 +500,7 @@ static int sev_get_memfile_pfn(struct kvm *kvm, unsigned long addr,
 			       unsigned long size, unsigned long npages,
 			       struct page **pages)
 {
-	return kvm_vm_do_hva_range_op(kvm, addr, size,
+	return kvm_vm_do_hva_range_op(kvm, addr, addr + size,
 				      sev_get_memfile_pfn_handler, pages);
 }
 
-- 
2.38.1