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From: Chao Peng <chao.p.peng@linux.intel.com>
To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
	linux-arch@vger.kernel.org, linux-api@vger.kernel.org,
	linux-doc@vger.kernel.org, qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Sean Christopherson <seanjc@google.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Arnd Bergmann <arnd@arndb.de>,
	Naoya Horiguchi <naoya.horiguchi@nec.com>,
	Miaohe Lin <linmiaohe@huawei.com>,
	x86@kernel.org, "H . Peter Anvin" <hpa@zytor.com>,
	Hugh Dickins <hughd@google.com>, Jeff Layton <jlayton@kernel.org>,
	"J . Bruce Fields" <bfields@fieldses.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Shuah Khan <shuah@kernel.org>, Mike Rapoport <rppt@kernel.org>,
	Steven Price <steven.price@arm.com>,
	"Maciej S . Szmigiero" <mail@maciej.szmigiero.name>,
	Vlastimil Babka <vbabka@suse.cz>,
	Vishal Annapurve <vannapurve@google.com>,
	Yu Zhang <yu.c.zhang@linux.intel.com>,
	Chao Peng <chao.p.peng@linux.intel.com>,
	"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
	luto@kernel.org, jun.nakajima@intel.com, dave.hansen@intel.com,
	ak@linux.intel.com, david@redhat.com, aarcange@redhat.com,
	ddutile@redhat.com, dhildenb@redhat.com,
	Quentin Perret <qperret@google.com>,
	tabba@google.com, Michael Roth <michael.roth@amd.com>,
	mhocko@suse.com, wei.w.wang@intel.com
Subject: [PATCH v10 7/9] KVM: Update lpage info when private/shared memory are mixed
Date: Fri,  2 Dec 2022 14:13:45 +0800	[thread overview]
Message-ID: <20221202061347.1070246-8-chao.p.peng@linux.intel.com> (raw)
In-Reply-To: <20221202061347.1070246-1-chao.p.peng@linux.intel.com>

A large page with mixed private/shared subpages can't be mapped as large
page since its sub private/shared pages are from different memory
backends and may also treated by architecture differently. When
private/shared memory are mixed in a large page, the current lpage_info
is not sufficient to decide whether the page can be mapped as large page
or not and additional private/shared mixed information is needed.

Tracking this 'mixed' information with the current 'count' like
disallow_lpage is a bit challenge so reserve a bit in 'disallow_lpage'
to indicate a large page has mixed private/share subpages and update
this 'mixed' bit whenever the memory attribute is changed between
private and shared.

Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
---
 arch/x86/include/asm/kvm_host.h |   8 ++
 arch/x86/kvm/mmu/mmu.c          | 134 +++++++++++++++++++++++++++++++-
 arch/x86/kvm/x86.c              |   2 +
 include/linux/kvm_host.h        |  19 +++++
 virt/kvm/kvm_main.c             |   9 ++-
 5 files changed, 169 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 283cbb83d6ae..7772ab37ac89 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -38,6 +38,7 @@
 #include <asm/hyperv-tlfs.h>
 
 #define __KVM_HAVE_ARCH_VCPU_DEBUGFS
+#define __KVM_HAVE_ARCH_SET_MEMORY_ATTRIBUTES
 
 #define KVM_MAX_VCPUS 1024
 
@@ -1011,6 +1012,13 @@ struct kvm_vcpu_arch {
 #endif
 };
 
+/*
+ * Use a bit in disallow_lpage to indicate private/shared pages mixed at the
+ * level. The remaining bits are used as a reference count.
+ */
+#define KVM_LPAGE_PRIVATE_SHARED_MIXED		(1U << 31)
+#define KVM_LPAGE_COUNT_MAX			((1U << 31) - 1)
+
 struct kvm_lpage_info {
 	int disallow_lpage;
 };
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index e2c70b5afa3e..2190fd8c95c0 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -763,11 +763,16 @@ static void update_gfn_disallow_lpage_count(const struct kvm_memory_slot *slot,
 {
 	struct kvm_lpage_info *linfo;
 	int i;
+	int disallow_count;
 
 	for (i = PG_LEVEL_2M; i <= KVM_MAX_HUGEPAGE_LEVEL; ++i) {
 		linfo = lpage_info_slot(gfn, slot, i);
+
+		disallow_count = linfo->disallow_lpage & KVM_LPAGE_COUNT_MAX;
+		WARN_ON(disallow_count + count < 0 ||
+			disallow_count > KVM_LPAGE_COUNT_MAX - count);
+
 		linfo->disallow_lpage += count;
-		WARN_ON(linfo->disallow_lpage < 0);
 	}
 }
 
@@ -6986,3 +6991,130 @@ void kvm_mmu_pre_destroy_vm(struct kvm *kvm)
 	if (kvm->arch.nx_huge_page_recovery_thread)
 		kthread_stop(kvm->arch.nx_huge_page_recovery_thread);
 }
+
+static bool linfo_is_mixed(struct kvm_lpage_info *linfo)
+{
+	return linfo->disallow_lpage & KVM_LPAGE_PRIVATE_SHARED_MIXED;
+}
+
+static void linfo_set_mixed(gfn_t gfn, struct kvm_memory_slot *slot,
+			    int level, bool mixed)
+{
+	struct kvm_lpage_info *linfo = lpage_info_slot(gfn, slot, level);
+
+	if (mixed)
+		linfo->disallow_lpage |= KVM_LPAGE_PRIVATE_SHARED_MIXED;
+	else
+		linfo->disallow_lpage &= ~KVM_LPAGE_PRIVATE_SHARED_MIXED;
+}
+
+static bool is_expected_attr_entry(void *entry, unsigned long expected_attrs)
+{
+	bool expect_private = expected_attrs & KVM_MEMORY_ATTRIBUTE_PRIVATE;
+
+	if (xa_to_value(entry) & KVM_MEMORY_ATTRIBUTE_PRIVATE) {
+		if (!expect_private)
+			return false;
+	} else if (expect_private)
+		return false;
+
+	return true;
+}
+
+static bool mem_attrs_mixed_2m(struct kvm *kvm, unsigned long attrs,
+			       gfn_t start, gfn_t end)
+{
+	XA_STATE(xas, &kvm->mem_attr_array, start);
+	gfn_t gfn = start;
+	void *entry;
+	bool mixed = false;
+
+	rcu_read_lock();
+	entry = xas_load(&xas);
+	while (gfn < end) {
+		if (xas_retry(&xas, entry))
+			continue;
+
+		KVM_BUG_ON(gfn != xas.xa_index, kvm);
+
+		if (!is_expected_attr_entry(entry, attrs)) {
+			mixed = true;
+			break;
+		}
+
+		entry = xas_next(&xas);
+		gfn++;
+	}
+
+	rcu_read_unlock();
+	return mixed;
+}
+
+static bool mem_attrs_mixed(struct kvm *kvm, struct kvm_memory_slot *slot,
+			    int level, unsigned long attrs,
+			    gfn_t start, gfn_t end)
+{
+	unsigned long gfn;
+
+	if (level == PG_LEVEL_2M)
+		return mem_attrs_mixed_2m(kvm, attrs, start, end);
+
+	for (gfn = start; gfn < end; gfn += KVM_PAGES_PER_HPAGE(level - 1))
+		if (linfo_is_mixed(lpage_info_slot(gfn, slot, level - 1)) ||
+		    !is_expected_attr_entry(xa_load(&kvm->mem_attr_array, gfn),
+					    attrs))
+			return true;
+	return false;
+}
+
+static void kvm_update_lpage_private_shared_mixed(struct kvm *kvm,
+						  struct kvm_memory_slot *slot,
+						  unsigned long attrs,
+						  gfn_t start, gfn_t end)
+{
+	unsigned long pages, mask;
+	gfn_t gfn, gfn_end, first, last;
+	int level;
+	bool mixed;
+
+	/*
+	 * The sequence matters here: we set the higher level basing on the
+	 * lower level's scanning result.
+	 */
+	for (level = PG_LEVEL_2M; level <= KVM_MAX_HUGEPAGE_LEVEL; level++) {
+		pages = KVM_PAGES_PER_HPAGE(level);
+		mask = ~(pages - 1);
+		first = start & mask;
+		last = (end - 1) & mask;
+
+		/*
+		 * We only need to scan the head and tail page, for middle pages
+		 * we know they will not be mixed.
+		 */
+		gfn = max(first, slot->base_gfn);
+		gfn_end = min(first + pages, slot->base_gfn + slot->npages);
+		mixed = mem_attrs_mixed(kvm, slot, level, attrs, gfn, gfn_end);
+		linfo_set_mixed(gfn, slot, level, mixed);
+
+		if (first == last)
+			return;
+
+		for (gfn = first + pages; gfn < last; gfn += pages)
+			linfo_set_mixed(gfn, slot, level, false);
+
+		gfn = last;
+		gfn_end = min(last + pages, slot->base_gfn + slot->npages);
+		mixed = mem_attrs_mixed(kvm, slot, level, attrs, gfn, gfn_end);
+		linfo_set_mixed(gfn, slot, level, mixed);
+	}
+}
+
+void kvm_arch_set_memory_attributes(struct kvm *kvm,
+				    struct kvm_memory_slot *slot,
+				    unsigned long attrs,
+				    gfn_t start, gfn_t end)
+{
+	if (kvm_slot_can_be_private(slot))
+		kvm_update_lpage_private_shared_mixed(kvm, slot, attrs,
+						      start, end);
+}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 9a07380f8d3c..5aefcff614d2 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -12362,6 +12362,8 @@ static int kvm_alloc_memslot_metadata(struct kvm *kvm,
 		if ((slot->base_gfn + npages) & (KVM_PAGES_PER_HPAGE(level) - 1))
 			linfo[lpages - 1].disallow_lpage = 1;
 		ugfn = slot->userspace_addr >> PAGE_SHIFT;
+		if (kvm_slot_can_be_private(slot))
+			ugfn |= slot->restricted_offset >> PAGE_SHIFT;
 		/*
 		 * If the gfn and userspace address are not aligned wrt each
 		 * other, disable large page support for this slot.
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 3331c0c92838..25099c94e770 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -592,6 +592,11 @@ struct kvm_memory_slot {
 	struct restrictedmem_notifier notifier;
 };
 
+static inline bool kvm_slot_can_be_private(const struct kvm_memory_slot *slot)
+{
+	return slot && (slot->flags & KVM_MEM_PRIVATE);
+}
+
 static inline bool kvm_slot_dirty_track_enabled(const struct kvm_memory_slot *slot)
 {
 	return slot->flags & KVM_MEM_LOG_DIRTY_PAGES;
@@ -2316,4 +2321,18 @@ static inline void kvm_account_pgtable_pages(void *virt, int nr)
 /* Max number of entries allowed for each kvm dirty ring */
 #define  KVM_DIRTY_RING_MAX_ENTRIES  65536
 
+#ifdef __KVM_HAVE_ARCH_SET_MEMORY_ATTRIBUTES
+void kvm_arch_set_memory_attributes(struct kvm *kvm,
+				    struct kvm_memory_slot *slot,
+				    unsigned long attrs,
+				    gfn_t start, gfn_t end);
+#else
+static inline void kvm_arch_set_memory_attributes(struct kvm *kvm,
+						  struct kvm_memory_slot *slot,
+						  unsigned long attrs,
+						  gfn_t start, gfn_t end)
+{
+}
+#endif /* __KVM_HAVE_ARCH_SET_MEMORY_ATTRIBUTES */
+
 #endif
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 4e1e1e113bf0..e107afea32f0 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2354,7 +2354,8 @@ static u64 kvm_supported_mem_attributes(struct kvm *kvm)
 	return 0;
 }
 
-static void kvm_unmap_mem_range(struct kvm *kvm, gfn_t start, gfn_t end)
+static void kvm_unmap_mem_range(struct kvm *kvm, gfn_t start, gfn_t end,
+				unsigned long attrs)
 {
 	struct kvm_gfn_range gfn_range;
 	struct kvm_memory_slot *slot;
@@ -2378,6 +2379,10 @@ static void kvm_unmap_mem_range(struct kvm *kvm, gfn_t start, gfn_t end)
 			gfn_range.slot = slot;
 
 			r |= kvm_unmap_gfn_range(kvm, &gfn_range);
+
+			kvm_arch_set_memory_attributes(kvm, slot, attrs,
+						       gfn_range.start,
+						       gfn_range.end);
 		}
 	}
 
@@ -2427,7 +2432,7 @@ static int kvm_vm_ioctl_set_mem_attributes(struct kvm *kvm,
 		idx = srcu_read_lock(&kvm->srcu);
 		KVM_MMU_LOCK(kvm);
 		if (i > start)
-			kvm_unmap_mem_range(kvm, start, i);
+			kvm_unmap_mem_range(kvm, start, i, attrs->attributes);
 		kvm_mmu_invalidate_end(kvm);
 		KVM_MMU_UNLOCK(kvm);
 		srcu_read_unlock(&kvm->srcu, idx);
-- 
2.25.1


  parent reply	other threads:[~2022-12-02  6:21 UTC|newest]

Thread overview: 398+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-02  6:13 [PATCH v10 0/9] KVM: mm: fd-based approach for supporting KVM Chao Peng
2022-12-02  6:13 ` [PATCH v10 1/9] mm: Introduce memfd_restricted system call to create restricted user memory Chao Peng
2022-12-06 14:57   ` Fuad Tabba
2022-12-07 13:50     ` Chao Peng
2022-12-13 23:49   ` Huang, Kai
2022-12-19  7:53     ` Chao Peng
2022-12-19  8:48       ` Huang, Kai
2022-12-20  7:22         ` Chao Peng
2022-12-20  8:33           ` Huang, Kai
2022-12-21 13:39             ` Chao Peng
2022-12-22  0:37               ` Huang, Kai
2022-12-23  8:20                 ` Chao Peng
2023-01-23 14:03                 ` Vlastimil Babka
2023-01-23 15:18                   ` Kirill A. Shutemov
2023-02-13 14:23                     ` Vlastimil Babka
2023-01-23 23:01                   ` Huang, Kai
2023-01-23 23:38                     ` Sean Christopherson
2023-01-24  7:51                       ` Vlastimil Babka
2022-12-22 18:15               ` Sean Christopherson
2022-12-23  0:50                 ` Huang, Kai
2022-12-23  8:24                 ` Chao Peng
2023-01-23 15:43                 ` Kirill A. Shutemov
2023-02-13 11:43                   ` Vlastimil Babka
2023-02-13 13:10                   ` Michael Roth
2023-01-13 21:54   ` Sean Christopherson
2023-01-17 12:41     ` Chao Peng
2023-01-17 16:34       ` Sean Christopherson
2023-01-18  8:16         ` Chao Peng
2023-01-18 10:17           ` Isaku Yamahata
2023-02-22  2:07     ` Alexey Kardashevskiy
2023-02-24  5:42       ` Chao Peng
2023-01-30  5:26   ` Ackerley Tng
2023-01-30  6:04     ` Wang, Wei W
2023-02-16  9:51   ` Nikunj A. Dadhania
2023-03-20 19:08     ` Michael Roth
2023-04-13 15:25   ` [PATCH v7 00/14] KVM: mm: fd-based approach for supporting KVM guest private memory Christian Brauner
2023-04-13 22:28     ` Sean Christopherson
2023-04-14 22:38       ` Ackerley Tng
2023-04-14 23:26         ` Sean Christopherson
2023-04-15  0:06           ` Sean Christopherson
2023-04-19  8:29       ` Christian Brauner
2023-04-20  0:49         ` Sean Christopherson
2023-04-20  8:35           ` Christian Brauner
2023-04-13 17:22   ` [PATCH v10 1/9] mm: Introduce memfd_restricted system call to create restricted user memory Ackerley Tng
2022-12-02  6:13 ` [PATCH v10 2/9] KVM: Introduce per-page memory attributes Chao Peng
2022-12-06 13:34   ` Fabiano Rosas
2022-12-07 14:31     ` Chao Peng
2022-12-06 15:07   ` Fuad Tabba
2022-12-07 14:51     ` Chao Peng
2022-12-16 15:09   ` Borislav Petkov
2022-12-19  8:15     ` Chao Peng
2022-12-19 10:17       ` Borislav Petkov
2022-12-20  7:24         ` Chao Peng
2022-12-28  8:28   ` Chenyi Qiang
2023-01-03  1:39     ` Chao Peng
2023-01-03  3:32       ` Wang, Wei W
2023-01-03 23:06         ` Sean Christopherson
2023-01-05  4:39           ` Chao Peng
2023-01-13 22:02   ` Sean Christopherson
2023-01-17  3:21   ` Binbin Wu
2023-01-17 13:30     ` Chao Peng
2023-01-17 17:25       ` Sean Christopherson
2023-02-09  7:25   ` Isaku Yamahata
2023-02-10  0:35     ` Sean Christopherson
2023-02-13 23:53       ` Isaku Yamahata
2023-02-14 18:07         ` Sean Christopherson
2023-05-19 17:32   ` Nicolas Saenz Julienne
2023-05-19 18:23     ` Sean Christopherson
2023-05-19 19:49       ` Nicolas Saenz Julienne
2023-05-19 19:57         ` Sean Christopherson
2023-05-23 18:59       ` Nicolas Saenz Julienne
2022-12-02  6:13 ` [PATCH v10 3/9] KVM: Extend the memslot to support fd-based private memory Chao Peng
2022-12-05  9:03   ` Fuad Tabba
2022-12-06 11:53     ` Chao Peng
2022-12-06 12:39       ` Fuad Tabba
2022-12-07 15:10         ` Chao Peng
2022-12-08  8:37   ` Xiaoyao Li
2022-12-08 11:30     ` Chao Peng
2022-12-13 12:04       ` Xiaoyao Li
2022-12-19  7:50         ` Chao Peng
2022-12-19 14:36   ` Borislav Petkov
2022-12-20  7:43     ` Chao Peng
2022-12-20  9:55       ` Borislav Petkov
2022-12-21 13:42         ` Chao Peng
2023-01-05 11:23   ` Jarkko Sakkinen
2023-01-06  9:40     ` Chao Peng
2023-01-09 19:32       ` Sean Christopherson
2023-01-10  9:14         ` Chao Peng
2023-01-10 22:51           ` Vishal Annapurve
2023-01-13 22:37           ` Sean Christopherson
2023-01-17 12:42             ` Chao Peng
2023-01-20 23:42           ` Jarkko Sakkinen
2023-01-20 23:28         ` Jarkko Sakkinen
2022-12-02  6:13 ` [PATCH v10 4/9] KVM: Add KVM_EXIT_MEMORY_FAULT exit Chao Peng
2022-12-06 15:47   ` Fuad Tabba
2022-12-07 15:11     ` Chao Peng
2023-01-13 23:13   ` Sean Christopherson
2022-12-02  6:13 ` [PATCH v10 5/9] KVM: Use gfn instead of hva for mmu_notifier_retry Chao Peng
2022-12-05  9:23   ` Fuad Tabba
2022-12-06 11:56     ` Chao Peng
2022-12-06 15:48       ` Fuad Tabba
2022-12-09  6:24         ` Chao Peng
2022-12-07  6:34       ` Isaku Yamahata
2022-12-07 15:14         ` Chao Peng
2022-12-02  6:13 ` [PATCH v10 6/9] KVM: Unmap existing mappings when change the memory attributes Chao Peng
2022-12-07  8:13   ` Yuan Yao
2022-12-08 11:20     ` Chao Peng
2022-12-09  5:43       ` Yuan Yao
2022-12-07 17:16   ` Fuad Tabba
2022-12-08 11:13     ` Chao Peng
2022-12-09  8:57       ` Fuad Tabba
2022-12-12  7:22         ` Chao Peng
2022-12-13 23:51   ` Huang, Kai
2022-12-19  7:54     ` Chao Peng
2023-01-13 22:50   ` Sean Christopherson
2022-12-02  6:13 ` Chao Peng [this message]
2022-12-05 22:49   ` [PATCH v10 7/9] KVM: Update lpage info when private/shared memory are mixed Isaku Yamahata
2022-12-06 12:02     ` Chao Peng
2022-12-07  6:42       ` Isaku Yamahata
2022-12-08 11:17         ` Chao Peng
2023-01-13 23:12   ` Sean Christopherson
2023-01-13 23:16   ` Sean Christopherson
2023-01-28 13:54     ` Chao Peng
2022-12-02  6:13 ` [PATCH v10 8/9] KVM: Handle page fault for private memory Chao Peng
2022-12-08  2:29   ` Yuan Yao
2022-12-08 11:23     ` Chao Peng
2022-12-09  5:45       ` Yuan Yao
2022-12-09  9:01   ` Fuad Tabba
2022-12-12  7:23     ` Chao Peng
2023-01-13 23:29   ` Sean Christopherson
2022-12-02  6:13 ` [PATCH v10 9/9] KVM: Enable and expose KVM_MEM_PRIVATE Chao Peng
2022-12-09  9:11   ` Fuad Tabba
2023-01-05 20:38   ` Vishal Annapurve
2023-01-06  4:13     ` Chao Peng
2023-01-14  0:01   ` Sean Christopherson
2023-01-17 13:12     ` Chao Peng
2023-01-17 19:35       ` Sean Christopherson
2023-01-18  8:23         ` Chao Peng
2023-01-28 14:00     ` Chao Peng
2023-03-08  0:13       ` Ackerley Tng
2023-03-08  7:40         ` Chao Peng
2023-03-23  0:41           ` Isaku Yamahata
2023-03-24  2:10             ` Chao Peng
2023-03-24  2:29               ` Xiaoyao Li
2023-03-28 10:41                 ` Chao Peng
2023-04-14 21:08                   ` Sean Christopherson
2023-04-18 23:38                     ` Ackerley Tng
2023-04-25 23:01                       ` Sean Christopherson
2023-03-07 19:14   ` Ackerley Tng
2023-03-07 20:27     ` Sean Christopherson
2023-01-14  0:37 ` [PATCH v10 0/9] KVM: mm: fd-based approach for supporting KVM Sean Christopherson
2023-01-16 13:48   ` Kirill A. Shutemov
2023-01-17 13:19   ` Chao Peng
2023-01-17 14:32   ` Fuad Tabba
2023-01-19 11:13   ` Isaku Yamahata
2023-01-19 15:25     ` Sean Christopherson
2023-01-19 22:37       ` Isaku Yamahata
2023-01-24  1:27         ` Sean Christopherson
2023-02-08 12:24           ` Isaku Yamahata
2023-02-13 13:01           ` Michael Roth
2023-02-21 12:11             ` Chao Peng
2023-03-23  1:27               ` Michael Roth
2023-03-24  2:13                 ` Chao Peng
2023-04-12 22:01                 ` Sean Christopherson
2023-04-17 14:37           ` Chao Peng
2023-04-17 15:01             ` Sean Christopherson
2023-01-24 16:08   ` Liam Merwick
2023-01-25  0:20     ` Sean Christopherson
2023-01-25 12:53       ` Kirill A. Shutemov
2023-01-25 16:01         ` Liam Merwick
2023-04-13  1:07         ` Sean Christopherson
2023-04-13 16:04           ` Kirill A. Shutemov
2023-02-16  5:13 ` Mike Rapoport
2023-02-16  9:41   ` David Hildenbrand
2023-02-22 21:53     ` Sean Christopherson
2023-04-17 15:40 ` Rename restrictedmem => guardedmem? (was: Re: [PATCH v10 0/9] KVM: mm: fd-based approach for supporting KVM) Sean Christopherson
2023-04-17 15:48   ` David Hildenbrand
2023-04-17 16:40     ` Sean Christopherson
2023-04-17 17:09       ` David Hildenbrand
2023-04-17 19:16         ` Sean Christopherson
2023-04-18  8:53           ` Fuad Tabba
2023-04-18  9:10           ` David Hildenbrand
2023-04-19  0:47             ` Sean Christopherson
2023-04-19  7:21               ` David Hildenbrand
2023-04-19 15:17                 ` Sean Christopherson
2023-04-19 15:27                   ` David Hildenbrand
2023-04-22  1:33                 ` Sean Christopherson
2023-05-05 19:39                   ` Ackerley Tng
2023-05-06  0:55                     ` Sean Christopherson
2023-05-06  1:17                       ` Vishal Annapurve
2023-05-15 23:46                       ` Sean Christopherson
2023-07-13 22:46                       ` Ackerley Tng
2023-07-14 19:29                         ` Sean Christopherson
2023-07-14 23:09                           ` Vishal Annapurve
2023-07-15  0:30                             ` Sean Christopherson
2023-05-09 12:44                     ` Chao Peng
2023-05-10 17:26                   ` Vishal Annapurve
2023-05-10 20:23                     ` Vishal Annapurve
2023-05-10 21:39                     ` Sean Christopherson
2023-05-10 23:03                       ` Vishal Annapurve
2023-05-11 20:22                         ` Sean Christopherson
2023-05-19  1:07                           ` Vishal Annapurve
2023-05-12  0:21                   ` Michael Roth
2023-05-12 18:01                     ` Sean Christopherson
2023-05-22 13:50                       ` Michael Roth
2023-05-22 17:09                         ` Sean Christopherson
2023-05-22 23:58                           ` Michael Roth
2023-05-23  0:21                             ` Sean Christopherson
2023-06-06 19:14                   ` Ackerley Tng
2023-06-06 23:25                     ` Sean Christopherson
2023-06-08 17:13                       ` Ackerley Tng
2023-04-17 17:11       ` Ackerley Tng
2023-04-17 18:17         ` Sean Christopherson
2023-04-18 17:01       ` Ackerley Tng
2023-04-23 13:28     ` Jarkko Sakkinen
2023-05-05 20:00       ` David Hildenbrand
2023-05-06  7:44         ` Vlastimil Babka
2023-05-06  9:16           ` David Hildenbrand
2023-04-23 13:14   ` Jarkko Sakkinen
  -- strict thread matches above, loose matches on Subject: below --
2023-03-31 23:50 [RFC PATCH v3 0/2] Providing mount in memfd_restricted() syscall Ackerley Tng
2023-03-31 23:50 ` [RFC PATCH v3 1/2] mm: restrictedmem: Allow userspace to specify mount for memfd_restricted Ackerley Tng
2023-04-03  8:21   ` David Hildenbrand
2023-04-05 22:29     ` Ackerley Tng
2023-04-04  8:25   ` Kirill A. Shutemov
2023-04-05 22:32     ` Ackerley Tng
2023-04-04 13:53   ` Christian Brauner
2023-04-04 14:58     ` Christian Brauner
2023-04-05 21:58       ` Ackerley Tng
2023-04-12  9:59         ` Christian Brauner
2023-04-13 22:53           ` Ackerley Tng
2023-04-13 23:07             ` Sean Christopherson
2023-03-31 23:50 ` [RFC PATCH v3 2/2] selftests: restrictedmem: Check hugepage-ness of shmem file backing restrictedmem fd Ackerley Tng
2023-04-03  8:24   ` David Hildenbrand
2023-04-11  1:35     ` Ackerley Tng
2022-07-06  8:20 [PATCH v7 00/14] KVM: mm: fd-based approach for supporting KVM guest private memory Chao Peng
2022-07-06  8:20 ` [PATCH v7 01/14] mm: Add F_SEAL_AUTO_ALLOCATE seal to memfd Chao Peng
2022-07-21  9:44   ` David Hildenbrand
2022-07-21  9:50     ` David Hildenbrand
2022-07-21 15:05       ` Sean Christopherson
2022-07-25 13:46         ` Chao Peng
2022-07-21 10:27     ` Gupta, Pankaj
2022-07-25 13:54       ` Chao Peng
2022-07-25 14:49         ` Gupta, Pankaj
2022-07-25 13:42     ` Chao Peng
2022-08-05 17:55     ` Paolo Bonzini
2022-08-05 18:06       ` David Hildenbrand
2022-08-10  9:40         ` Chao Peng
2022-08-10  9:38       ` Chao Peng
2022-08-17 23:41       ` Kirill A. Shutemov
2022-08-18  9:09         ` Paolo Bonzini
2022-08-23  7:36         ` David Hildenbrand
2022-08-24 10:20           ` Chao Peng
2022-08-26 15:19   ` Fuad Tabba
2022-08-29 15:18     ` Chao Peng
2022-07-06  8:20 ` [PATCH v7 02/14] selftests/memfd: Add tests for F_SEAL_AUTO_ALLOCATE Chao Peng
2022-08-05 13:11   ` David Hildenbrand
2022-07-06  8:20 ` [PATCH v7 03/14] mm: Introduce memfile_notifier Chao Peng
2022-08-05 13:22   ` David Hildenbrand
2022-08-10  9:22     ` Chao Peng
2022-08-10 10:05       ` David Hildenbrand
2022-08-10 14:38         ` Sean Christopherson
2022-08-11 12:27           ` Quentin Perret
2022-08-11 13:39             ` Chao Peng
2022-07-06  8:20 ` [PATCH v7 04/14] mm/shmem: Support memfile_notifier Chao Peng
2022-07-12 18:02   ` Gupta, Pankaj
2022-07-13  7:44     ` Chao Peng
2022-07-13 10:01       ` Gupta, Pankaj
2022-07-13 23:49         ` Chao Peng
2022-07-14  4:15           ` Gupta, Pankaj
2022-08-05 13:26   ` David Hildenbrand
2022-08-10  9:25     ` Chao Peng
2022-07-06  8:20 ` [PATCH v7 05/14] mm/memfd: Introduce MFD_INACCESSIBLE flag Chao Peng
2022-08-05 13:28   ` David Hildenbrand
2022-08-10  9:37     ` Chao Peng
2022-08-10  9:55       ` David Hildenbrand
2022-08-11 13:17         ` Chao Peng
2022-09-07 16:18     ` Kirill A. Shutemov
2022-07-06  8:20 ` [PATCH v7 06/14] KVM: Rename KVM_PRIVATE_MEM_SLOTS to KVM_INTERNAL_MEM_SLOTS Chao Peng
2022-07-06  8:20 ` [PATCH v7 07/14] KVM: Use gfn instead of hva for mmu_notifier_retry Chao Peng
2022-07-15 11:36   ` Gupta, Pankaj
2022-07-18 13:29     ` Chao Peng
2022-07-18 15:26       ` Sean Christopherson
2022-07-19 14:02         ` Chao Peng
2022-08-04  7:10   ` Isaku Yamahata
2022-08-10  8:19     ` Chao Peng
2022-07-06  8:20 ` [PATCH v7 08/14] KVM: Rename mmu_notifier_* Chao Peng
2022-07-29 19:02   ` Sean Christopherson
2022-08-03 10:13     ` Chao Peng
2022-08-05 19:54     ` Paolo Bonzini
2022-08-10  8:09       ` Chao Peng
2023-05-23  7:19   ` Kautuk Consul
2023-05-23 14:19     ` Sean Christopherson
2023-05-24  6:12       ` Kautuk Consul
2023-05-24 20:16         ` Sean Christopherson
2023-05-24 20:33           ` Peter Zijlstra
2023-05-24 21:39             ` Sean Christopherson
2023-05-25  8:54               ` Peter Zijlstra
2023-05-25  3:52             ` Kautuk Consul
2023-05-24 20:28         ` Peter Zijlstra
2022-07-06  8:20 ` [PATCH v7 09/14] KVM: Extend the memslot to support fd-based private memory Chao Peng
2022-07-29 19:51   ` Sean Christopherson
2022-08-03 10:08     ` Chao Peng
2022-08-03 14:42       ` Sean Christopherson
2022-07-06  8:20 ` [PATCH v7 10/14] KVM: Add KVM_EXIT_MEMORY_FAULT exit Chao Peng
2022-07-06  8:20 ` [PATCH v7 11/14] KVM: Register/unregister the guest private memory regions Chao Peng
2022-07-19  8:00   ` Gupta, Pankaj
2022-07-19 14:08     ` Chao Peng
2022-07-19 14:23       ` Gupta, Pankaj
2022-07-20 15:07         ` Chao Peng
2022-07-20 15:31           ` Gupta, Pankaj
2022-07-20 16:21             ` Sean Christopherson
2022-07-20 17:41               ` Gupta, Pankaj
2022-07-21  7:34               ` Wei Wang
2022-07-21  9:29                 ` Chao Peng
2022-07-21 17:58                   ` Sean Christopherson
2022-07-25 13:04                     ` Chao Peng
2022-07-29 19:54                       ` Sean Christopherson
2022-08-02  0:49                         ` Sean Christopherson
2022-08-02 16:38                           ` Sean Christopherson
2022-08-03  9:48                             ` Chao Peng
2022-08-03 15:51                               ` Sean Christopherson
2022-08-04  7:58                                 ` Chao Peng
2022-07-20 16:44   ` Sean Christopherson
2022-07-21  9:37     ` Chao Peng
2022-08-19 19:37   ` Vishal Annapurve
2022-08-24 10:37     ` Chao Peng
2022-08-26 15:19   ` Fuad Tabba
2022-08-29 15:21     ` Chao Peng
2022-07-06  8:20 ` [PATCH v7 12/14] KVM: Handle page fault for private memory Chao Peng
2022-07-29 20:58   ` Sean Christopherson
2022-08-03  9:52     ` Chao Peng
2022-07-06  8:20 ` [PATCH v7 13/14] KVM: Enable and expose KVM_MEM_PRIVATE Chao Peng
2022-07-19  9:55   ` Gupta, Pankaj
2022-07-19 14:12     ` Chao Peng
2022-07-06  8:20 ` [PATCH v7 14/14] memfd_create.2: Describe MFD_INACCESSIBLE flag Chao Peng
2022-08-01 14:40   ` Dave Hansen
2022-08-03  9:53     ` Chao Peng
2022-07-13  3:58 ` [PATCH v7 00/14] KVM: mm: fd-based approach for supporting KVM guest private memory Gupta, Pankaj
2022-07-13  7:57   ` Chao Peng
2022-07-13 10:35     ` Gupta, Pankaj
2022-07-13 23:59       ` Chao Peng
2022-07-14  4:39         ` Gupta, Pankaj
2022-07-14  5:06           ` Gupta, Pankaj
2022-07-14  4:29       ` Andy Lutomirski
2022-07-14  5:13         ` Gupta, Pankaj
2022-08-11 10:02 ` Nikunj A. Dadhania
2022-08-11 11:30   ` Gupta, Pankaj
2022-08-11 13:32     ` Chao Peng
2022-08-11 17:28       ` Nikunj A. Dadhania
2022-08-12  3:22       ` Nikunj A. Dadhania
2022-08-11 17:18     ` Nikunj A. Dadhania
2022-08-11 23:02       ` Gupta, Pankaj
2022-08-12  6:02         ` Gupta, Pankaj
2022-08-12  7:18           ` Gupta, Pankaj
2022-08-12  8:48             ` Nikunj A. Dadhania
2022-08-12  9:33               ` Gupta, Pankaj
2022-08-15 13:04               ` Chao Peng
2022-08-16  4:28                 ` Nikunj A. Dadhania
2022-08-16 11:33                 ` Gupta, Pankaj
2022-08-16 12:24                   ` Kirill A . Shutemov
2022-08-16 13:03                     ` Gupta, Pankaj
2022-08-16 15:38                       ` Sean Christopherson
2022-08-17 15:27                         ` Michael Roth
2022-08-23  1:25                           ` Isaku Yamahata
2022-08-23 17:41                         ` Gupta, Pankaj
2022-08-18  5:40 ` Hugh Dickins
2022-08-18 13:24   ` Kirill A . Shutemov
2022-08-19  0:20     ` Sean Christopherson
2022-08-19  3:38       ` Hugh Dickins
2022-08-19 22:53         ` Sean Christopherson
2022-08-23  7:55         ` David Hildenbrand
2022-08-23 16:05           ` Sean Christopherson
2022-08-24  9:41             ` Chao Peng
2022-09-09  4:55               ` Andy Lutomirski
2022-08-19  3:00     ` Hugh Dickins
2022-08-20  0:27       ` Kirill A. Shutemov
2022-08-21  5:15         ` Hugh Dickins
2022-08-31 14:24           ` Kirill A . Shutemov
2022-09-02 10:27             ` Chao Peng
2022-09-02 12:30               ` Kirill A . Shutemov
2022-09-08  1:10             ` Kirill A. Shutemov
2022-09-13  9:44               ` Sean Christopherson
2022-09-13 13:28                 ` Kirill A. Shutemov
2022-09-13 14:53                   ` Sean Christopherson
2022-09-13 16:00                     ` Kirill A. Shutemov
2022-09-13 16:12                       ` Sean Christopherson
2022-09-09  4:48         ` Andy Lutomirski
2022-09-09 14:32           ` Kirill A . Shutemov
2022-09-09 19:11             ` Andy Lutomirski
2022-09-09 23:02               ` Kirill A . Shutemov
2022-08-21 10:27       ` Matthew Wilcox
2022-08-24 10:27         ` Chao Peng
2022-09-09  4:44     ` Andy Lutomirski
2022-08-26 15:19 ` Fuad Tabba
2022-08-29 15:17   ` Chao Peng
2022-08-31  9:12     ` Fuad Tabba
2022-09-02 10:19       ` Chao Peng
2022-09-09 15:35 ` Michael Roth

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