linux-kernel - [PATCH v3 4/6] KVM: pass slot to hva_to

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4FD6ADF6.2030802@linux.vnet.ibm.com>
Date:	Tue, 12 Jun 2012 10:48:22 +0800
From:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
CC:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: [PATCH v3 4/6] KVM: pass slot to hva_to_pfn

This parameter will be used in the later patch

Signed-off-by: Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
---
 virt/kvm/kvm_main.c |   17 +++++++++++------
 1 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index c59fad6..811c3ee 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1077,8 +1077,9 @@ static inline int check_user_page_hwpoison(unsigned long addr)
 	return rc == -EHWPOISON;
 }

-static pfn_t hva_to_pfn(struct kvm *kvm, unsigned long addr, bool atomic,
-			bool *async, bool write_fault, bool *writable)
+static pfn_t hva_to_pfn(struct kvm *kvm, struct kvm_memory_slot *slot,
+			unsigned long addr, bool atomic, bool *async,
+			bool write_fault, bool *writable)
 {
 	struct page *page[1];
 	int npages = 0;
@@ -1161,18 +1162,22 @@ static pfn_t hva_to_pfn(struct kvm *kvm, unsigned long addr, bool atomic,
 static pfn_t __gfn_to_pfn(struct kvm *kvm, gfn_t gfn, bool atomic, bool *async,
 			  bool write_fault, bool *writable)
 {
+	struct kvm_memory_slot *slot;
 	unsigned long addr;

 	if (async)
 		*async = false;

-	addr = gfn_to_hva(kvm, gfn);
+	slot = gfn_to_memslot(kvm, gfn);
+	addr = gfn_to_hva_many(slot, gfn, NULL);
+
 	if (kvm_is_error_hva(addr)) {
 		get_page(bad_page);
 		return page_to_pfn(bad_page);
 	}

-	return hva_to_pfn(kvm, addr, atomic, async, write_fault, writable);
+	return hva_to_pfn(kvm, slot, addr, atomic, async, write_fault,
+			  writable);
 }

 pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn)
@@ -1205,7 +1210,7 @@ pfn_t gfn_to_pfn_memslot(struct kvm *kvm,
 			 struct kvm_memory_slot *slot, gfn_t gfn)
 {
 	unsigned long addr = gfn_to_hva_memslot(slot, gfn);
-	return hva_to_pfn(kvm, addr, false, NULL, true, NULL);
+	return hva_to_pfn(kvm, slot, addr, false, NULL, true, NULL);
 }

 pfn_t gfn_to_pfn_memslot_atomic(struct kvm *kvm,
@@ -1213,7 +1218,7 @@ pfn_t gfn_to_pfn_memslot_atomic(struct kvm *kvm,
 {
 	unsigned long addr = gfn_to_hva_memslot(slot, gfn);

-	return hva_to_pfn(kvm, addr, true, NULL, true, NULL);
+	return hva_to_pfn(kvm, slot, addr, true, NULL, true, NULL);
 }
 EXPORT_SYMBOL_GPL(gfn_to_pfn_memslot_atomic);

-- 
1.7.7.6

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/