linux-kernel - [PATCH 1/11] X86/Hyper-V: Add parameter offset for hyperv_fill_flush_guest_mapping

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Date:   Fri,  4 Jan 2019 16:53:55 +0800
From:   lantianyu1986@...il.com
To:     unlisted-recipients:; (no To-header on input)
Cc:     Lan Tianyu <Tianyu.Lan@...rosoft.com>, christoffer.dall@....com,
        marc.zyngier@....com, linux@...linux.org.uk,
        catalin.marinas@....com, will.deacon@....com, jhogan@...nel.org,
        ralf@...ux-mips.org, paul.burton@...s.com, paulus@...abs.org,
        benh@...nel.crashing.org, mpe@...erman.id.au, kys@...rosoft.com,
        haiyangz@...rosoft.com, sthemmin@...rosoft.com, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, hpa@...or.com, x86@...nel.org,
        pbonzini@...hat.com, rkrcmar@...hat.com,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
        linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org,
        kvm-ppc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        devel@...uxdriverproject.org, kvm@...r.kernel.org,
        michael.h.kelley@...rosoft.com, vkuznets@...hat.com
Subject: [PATCH 1/11] X86/Hyper-V: Add parameter offset for hyperv_fill_flush_guest_mapping_list()

From: Lan Tianyu <Tianyu.Lan@...rosoft.com>

Add parameter offset to specify start position to add flush ranges in
guest address list of struct hv_guest_mapping_flush_list.

Signed-off-by: Lan Tianyu <Tianyu.Lan@...rosoft.com>
---
 arch/x86/hyperv/nested.c        | 4 ++--
 arch/x86/include/asm/mshyperv.h | 2 +-
 arch/x86/kvm/vmx/vmx.c          | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/hyperv/nested.c b/arch/x86/hyperv/nested.c
index dd0a843f766d..96f8bac7476d 100644
--- a/arch/x86/hyperv/nested.c
+++ b/arch/x86/hyperv/nested.c
@@ -58,11 +58,11 @@ EXPORT_SYMBOL_GPL(hyperv_flush_guest_mapping);
 
 int hyperv_fill_flush_guest_mapping_list(
 		struct hv_guest_mapping_flush_list *flush,
-		u64 start_gfn, u64 pages)
+		int offset, u64 start_gfn, u64 pages)
 {
 	u64 cur = start_gfn;
 	u64 additional_pages;
-	int gpa_n = 0;
+	int gpa_n = offset;
 
 	do {
 		/*
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
index cc60e617931c..d6be685ab6b0 100644
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -357,7 +357,7 @@ int hyperv_flush_guest_mapping_range(u64 as,
 		hyperv_fill_flush_list_func fill_func, void *data);
 int hyperv_fill_flush_guest_mapping_list(
 		struct hv_guest_mapping_flush_list *flush,
-		u64 start_gfn, u64 end_gfn);
+		int offset, u64 start_gfn, u64 end_gfn);
 
 #ifdef CONFIG_X86_64
 void hv_apic_init(void);
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 87224e4c2fd9..2c159efedc40 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -428,7 +428,7 @@ int kvm_fill_hv_flush_list_func(struct hv_guest_mapping_flush_list *flush,
 {
 	struct kvm_tlb_range *range = data;
 
-	return hyperv_fill_flush_guest_mapping_list(flush, range->start_gfn,
+	return hyperv_fill_flush_guest_mapping_list(flush, 0, range->start_gfn,
 			range->pages);
 }
 
-- 
2.14.4