[PATCH] mm: sparse: Skip no-map regions in memblocks_present

: linux...@kvack.org Cc: linux-kernel@vger.kernel.org Signed-off-by: KarimAllah Ahmed --- mm/sparse.c | 4 1 file changed, 4 insertions(+) diff --git a/mm/sparse.c b/mm/sparse.c index fd13166..33810b6 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -256,6 +256,10 @@ void __init memblocks_present

[PATCH] fdt: Properly handle "no-map" field in the memory region

Mark the memory region with NOMAP flag instead of completely removing it from the memory blocks. That makes the FDT handling consistent with the EFI memory map handling. Cc: Rob Herring Cc: Frank Rowand Cc: devicet...@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: KarimAllah

[PATCH] arm: Extend the check for RAM in /dev/mem

poport Cc: Andrew Morton Cc: Anders Roxell Cc: Enrico Weigelt Cc: Thomas Gleixner Cc: KarimAllah Ahmed Cc: Mark Rutland Cc: James Morse Cc: Anshuman Khandual Cc: Jun Yao Cc: Yu Zhao Cc: Robin Murphy Cc: Ard Biesheuvel Cc: linux-arm-ker...@lists.infradead.org Cc: linux-kernel@vger.kernel.

[PATCH v6 03/14] X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs

with memremap(). Signed-off-by: Filippo Sironi Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/paging_tmpl.h | 38 +- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 6bdca39..c40af67 100644

[PATCH v6 01/14] X86/nVMX: handle_vmon: Read 4 bytes from guest memory

Read the data directly from guest memory instead of the map->read->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Suggested-by: Jim Mattson Signed-off-by: KarimAllah Ahmed Reviewed-by: Jim M

[PATCH v6 08/14] KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt descriptor table

e lifetime of the pinning of the interrupt descriptor table page on the host side. Signed-off-by: KarimAllah Ahmed Reviewed-by: Konrad Rzeszutek Wilk --- v4 -> v5: - unmap with dirty flag v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/kvm/v

[PATCH v6 04/14] KVM: Introduce a new guest mapping API

ove the performance of the memremap case. Signed-off-by: KarimAllah Ahmed Reviewed-by: Konrad Rzeszutek Wilk --- v5 -> v6: - Added a helper function to check if the mapping is mapped or not. - Added more comments on the struct. - Setting ->page to NULL on unmap and to a poison ptr if

[PATCH v6 06/14] KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap

Use kvm_vcpu_map when mapping the L1 MSR bitmap since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v4 -> v5: - unmap with dirty flag v1 -> v2: - Do not change the lifecycle of the m

[PATCH v6 10/14] KVM/nSVM: Use the new mapping API for mapping guest memory

Use the new mapping API for mapping guest memory to avoid depending on "struct page". Signed-off-by: KarimAllah Ahmed Reviewed-by: Konrad Rzeszutek Wilk --- v4 -> v5: - unmap with dirty flag --- arch/x86/kvm/svm.c | 97 +++--- 1 fil

[PATCH v6 11/14] KVM/nVMX: Use kvm_vcpu_map for accessing the shadow VMCS

Use kvm_vcpu_map for accessing the shadow VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed Reviewed-by: Konrad Rzessutek Wilk --- v4 -> v5: - unmap with dirty flag --- arch/x86/kvm/vmx/

[PATCH v6 13/14] KVM/nVMX: Use page_address_valid in a few more locations

Use page_address_valid in a few more locations that is already checking for a page aligned address that does not cross the maximum physical address. Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx/nested.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86

[PATCH v6 14/14] kvm, x86: Properly check whether a pfn is an MMIO or not

the guest no matter what the guest caching attributes are for this memory. Introduce a new function e820__mapped_raw_any which is equivalent to e820__mapped_any but uses the original e820 unmodified and use it to identify real *RAM*. Signed-off-by: KarimAllah Ahmed --- v1 -> v2

[PATCH v6 09/14] KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated

Use kvm_vcpu_map in emulator_cmpxchg_emulated since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed Reviewed-by: Konrad Rzeszutek Wilk --- v5 -> v6: - Remove explicit call to dirty the page. I

[PATCH v6 12/14] KVM/nVMX: Use kvm_vcpu_map for accessing the enlightened VMCS

Use kvm_vcpu_map for accessing the enlightened VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed Reviewed-by: Konrad Rzeszutek Wilk --- v4 -> v5: - s/enhanced/enlightened - unmap with dirty f

[PATCH v6 05/14] X86/nVMX: handle_vmptrld: Use kvm_vcpu_map when copying VMCS12 from guest memory

Use kvm_vcpu_map to the map the VMCS12 from guest memory because kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed Reviewed-by: Konrad Rzeszutek Wilk --- v4 -> v5: - Switch to the new guest mapping API inste

[PATCH v6 07/14] KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page

he pinning of the virtual APIC page on the host side. Signed-off-by: KarimAllah Ahmed Reviewed-by: Konrad Rzeszutek Wilk --- v4 -> v5: - unmap with dirty flag v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) - Use pfn_to_hpa instead of gfn_to_gpa --- arch/x86/kvm/v

[PATCH v6 00/14] KVM/X86: Introduce a new guest mapping interface

p patch. v3 -> v4: - Rebase - Add a new patch to also fix the newly introduced enlightned VMCS. v2 -> v3: - Rebase - Add a new patch to also fix the newly introduced shadow VMCS. Filippo Sironi (1): X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs KarimAllah Ahmed (13

[PATCH v6 02/14] X86/nVMX: Update the PML table without mapping and unmapping the page

Update the PML table without mapping and unmapping the page. This also avoids using kvm_vcpu_gpa_to_page(..) which assumes that there is a "struct page" for guest memory. As a side-effect of using kvm_write_guest_page the page is also properly marked as dirty. Signed-off-by: KarimA

[PATCH v5 01/13] X86/nVMX: handle_vmon: Read 4 bytes from guest memory

Read the data directly from guest memory instead of the map->read->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Suggested-by: Jim Mattson Signed-off-by: KarimAllah Ahmed Reviewed-by: Jim M

[PATCH v5 00/13] KVM/X86: Introduce a new guest mapping interface

ffect of another patch. - Added a new trivial cleanup patch. v3 -> v4: - Rebase - Add a new patch to also fix the newly introduced enlightned VMCS. v2 -> v3: - Rebase - Add a new patch to also fix the newly introduced shadow VMCS. Filippo Sironi (1): X86/KVM: Handle PFNs outside of ker

[PATCH v5 12/13] KVM/nVMX: Use kvm_vcpu_map for accessing the enlightened VMCS

Use kvm_vcpu_map for accessing the enhanced VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v4 -> v5: - s/enhanced/enlightened - unmap with dirty flag --- arch/x86/kvm/vmx/

[PATCH v5 08/13] KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt descriptor table

e lifetime of the pinning of the interrupt descriptor table page on the host side. Signed-off-by: KarimAllah Ahmed --- v4 -> v5: - unmap with dirty flag v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/kvm/vmx/nested.c | 43 -

[PATCH v5 09/13] KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated

Use kvm_vcpu_map in emulator_cmpxchg_emulated since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v4 -> v5: - unmap with dirty flag v1 -> v2: - Update to match the new API return codes ---

[PATCH v5 02/13] X86/nVMX: Update the PML table without mapping and unmapping the page

Update the PML table without mapping and unmapping the page. This also avoids using kvm_vcpu_gpa_to_page(..) which assumes that there is a "struct page" for guest memory. As a side-effect of using kvm_write_guest_page the page is also properly marked as dirty. Signed-off-by: KarimA

[PATCH v5 07/13] KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page

he pinning of the virtual APIC page on the host side. Signed-off-by: KarimAllah Ahmed --- v4 -> v5: - unmap with dirty flag v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) - Use pfn_to_hpa instead of gfn_to_gpa --- arch/x86/kvm/vmx/nested.c | 32 +++---

[PATCH v5 11/13] KVM/nVMX: Use kvm_vcpu_map for accessing the shadow VMCS

Use kvm_vcpu_map for accessing the shadow VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v4 -> v5: - unmap with dirty flag --- arch/x86/kvm/vmx/nested.c | 25

[PATCH v5 10/13] KVM/nSVM: Use the new mapping API for mapping guest memory

Use the new mapping API for mapping guest memory to avoid depending on "struct page". Signed-off-by: KarimAllah Ahmed --- v4 -> v5: - unmap with dirty flag --- arch/x86/kvm/svm.c | 97 +++--- 1 file changed, 49 insertions(+), 48 delet

[PATCH v5 06/13] KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap

Use kvm_vcpu_map when mapping the L1 MSR bitmap since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v4 -> v5: - unmap with dirty flag v1 -> v2: - Do not change the lifecycle of the m

[PATCH v5 04/13] KVM: Introduce a new guest mapping API

ove the performance of the memremap case. Signed-off-by: KarimAllah Ahmed --- v3 -> v4: - Update the commit message. v1 -> v2: - Drop the caching optimization (pbonzini) - Use 'hva' instead of 'kaddr' (pbonzini) - Return 0/-EINVAL/-EFAULT instead of true/false. -EFAULT will be used for AMD p

[PATCH v5 03/13] X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs

with memremap(). Signed-off-by: Filippo Sironi Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/paging_tmpl.h | 38 +- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 6bdca39..c40af67 100644

[PATCH v5 13/13] KVM/nVMX: Use page_address_valid in a few more locations

Use page_address_valid in a few more locations that is already checking for a page aligned address that does not cross the maximum physical address. Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx/nested.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86

[PATCH v5 05/13] X86/nVMX: handle_vmptrld: Use kvm_vcpu_map when copying VMCS12 from guest memory

Use kvm_vcpu_map to the map the VMCS12 from guest memory because kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v4 -> v5: - Switch to the new guest mapping API instead of reading directly from g

[PATCH] KVM/nVMX: Stop mapping the "APIC-access address" page into the kernel

APIC-access address" page into the kernel and even drop the requirements to have a valid page backing it. Instead, just use some token that: 1) Not one of the valid guest pages. 2) Within the physical address supported by the CPU. Suggested-by: Jim Mattson Signed-off-by: KarimAllah Ah

[PATCH] KVM/nVMX: Stop mapping the "APIC-access address" page into the kernel

APIC-access address" page into the kernel and even drop the requirements to have a valid page backing it. Instead, just use some token that: 1) Not one of the valid guest pages. 2) Within the physical address supported by the CPU. Suggested-by: Jim Mattson Signed-off-by: KarimAllah Ah

[PATCH v4 05/14] KVM: Introduce a new guest mapping API

ove the performance of the memremap case. Signed-off-by: KarimAllah Ahmed --- v3 -> v4: - Update the commit message. v1 -> v2: - Drop the caching optimization (pbonzini) - Use 'hva' instead of 'kaddr' (pbonzini) - Return 0/-EINVAL/-EFAULT instead of true/false. -EFAULT will be used for AMD p

[PATCH v4 05/14] KVM: Introduce a new guest mapping API

ove the performance of the memremap case. Signed-off-by: KarimAllah Ahmed --- v3 -> v4: - Update the commit message. v1 -> v2: - Drop the caching optimization (pbonzini) - Use 'hva' instead of 'kaddr' (pbonzini) - Return 0/-EINVAL/-EFAULT instead of true/false. -EFAULT will be used for AMD p

[PATCH v4 00/14] KVM/X86: Introduce a new guest mapping interface

h to also fix the newly introduced enhanced VMCS. v2 -> v3: - Rebase - Add a new patch to also fix the newly introduced shadow VMCS. Filippo Sironi (1): X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs KarimAllah Ahmed (13): X86/nVMX: handle_vmon: Read 4 bytes from

[PATCH v4 00/14] KVM/X86: Introduce a new guest mapping interface

h to also fix the newly introduced enhanced VMCS. v2 -> v3: - Rebase - Add a new patch to also fix the newly introduced shadow VMCS. Filippo Sironi (1): X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs KarimAllah Ahmed (13): X86/nVMX: handle_vmon: Read 4 bytes from

[PATCH v4 13/14] KVM/nVMX: Use kvm_vcpu_map for accessing the shadow VMCS

Use kvm_vcpu_map for accessing the shadow VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 25 - 1 file changed, 12 insertions(+), 13 deletion

[PATCH v4 07/14] KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page

he pinning of the virtual APIC page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) - Use pfn_to_hpa instead of gfn_to_gpa --- arch/x86/kvm/vmx.c | 39 +-- 1 file changed, 13 insertions(+),

[PATCH v4 13/14] KVM/nVMX: Use kvm_vcpu_map for accessing the shadow VMCS

Use kvm_vcpu_map for accessing the shadow VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 25 - 1 file changed, 12 insertions(+), 13 deletion

[PATCH v4 07/14] KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page

he pinning of the virtual APIC page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) - Use pfn_to_hpa instead of gfn_to_gpa --- arch/x86/kvm/vmx.c | 39 +-- 1 file changed, 13 insertions(+),

[PATCH v4 08/14] KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt descriptor table

e lifetime of the pinning of the interrupt descriptor table page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/kvm/vmx.c | 45 +++-- 1 file changed, 15 insertions(+),

[PATCH v4 04/14] X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs

with memremap(). Signed-off-by: Filippo Sironi Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/paging_tmpl.h | 38 +- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 7cf2185..b953545 100644

[PATCH v4 09/14] KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated

Use kvm_vcpu_map in emulator_cmpxchg_emulated since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/x86.c | 13 ++--

[PATCH v4 10/14] KVM/X86: hyperv: Use kvm_vcpu_map in synic_clear_sint_msg_pending

Use kvm_vcpu_map in synic_clear_sint_msg_pending since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/hyperv.c | 16 ++

[PATCH v4 08/14] KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt descriptor table

e lifetime of the pinning of the interrupt descriptor table page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/kvm/vmx.c | 45 +++-- 1 file changed, 15 insertions(+),

[PATCH v4 04/14] X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs

with memremap(). Signed-off-by: Filippo Sironi Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/paging_tmpl.h | 38 +- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 7cf2185..b953545 100644

[PATCH v4 09/14] KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated

Use kvm_vcpu_map in emulator_cmpxchg_emulated since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/x86.c | 13 ++--

[PATCH v4 10/14] KVM/X86: hyperv: Use kvm_vcpu_map in synic_clear_sint_msg_pending

Use kvm_vcpu_map in synic_clear_sint_msg_pending since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/hyperv.c | 16 ++

[PATCH v4 11/14] KVM/X86: hyperv: Use kvm_vcpu_map in synic_deliver_msg

Use kvm_vcpu_map in synic_deliver_msg since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/hyperv.c | 12 ++-- 1 fi

[PATCH v4 14/14] KVM/nVMX: Use kvm_vcpu_map for accessing the enhanced VMCS

Use kvm_vcpu_map for accessing the enhanced VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 16 ++-- 1 file changed, 6 insertions(+), 10 deletions(-)

[PATCH v4 11/14] KVM/X86: hyperv: Use kvm_vcpu_map in synic_deliver_msg

Use kvm_vcpu_map in synic_deliver_msg since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/hyperv.c | 12 ++-- 1 fi

[PATCH v4 14/14] KVM/nVMX: Use kvm_vcpu_map for accessing the enhanced VMCS

Use kvm_vcpu_map for accessing the enhanced VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 16 ++-- 1 file changed, 6 insertions(+), 10 deletions(-)

[PATCH v4 12/14] KVM/nSVM: Use the new mapping API for mapping guest memory

Use the new mapping API for mapping guest memory to avoid depending on "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/svm.c | 97 +++--- 1 file changed, 49 insertions(+), 48 deletions(-) diff --git a/arch/x86/kvm/svm.c

[PATCH v4 01/14] X86/nVMX: handle_vmon: Read 4 bytes from guest memory

Read the data directly from guest memory instead of the map->read->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Suggested-by: Jim Mattson Signed-off-by: KarimAllah Ahmed Reviewed-by: Jim

[PATCH v4 12/14] KVM/nSVM: Use the new mapping API for mapping guest memory

Use the new mapping API for mapping guest memory to avoid depending on "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/svm.c | 97 +++--- 1 file changed, 49 insertions(+), 48 deletions(-) diff --git a/arch/x86/kvm/svm.c

[PATCH v4 01/14] X86/nVMX: handle_vmon: Read 4 bytes from guest memory

Read the data directly from guest memory instead of the map->read->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Suggested-by: Jim Mattson Signed-off-by: KarimAllah Ahmed Reviewed-by: Jim

[PATCH v4 06/14] KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap

Use kvm_vcpu_map when mapping the L1 MSR bitmap since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/k

[PATCH v4 02/14] X86/nVMX: handle_vmptrld: Copy the VMCS12 directly from guest memory

Copy the VMCS12 directly from guest memory instead of the map->copy->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Signed-off-by: KarimAllah Ahmed --- v3

[PATCH v4 03/14] X86/nVMX: Update the PML table without mapping and unmapping the page

Update the PML table without mapping and unmapping the page. This also avoids using kvm_vcpu_gpa_to_page(..) which assumes that there is a "struct page" for guest memory. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Use kvm_write_guest_page instead of kvm_write_guest (pbonzini)

[PATCH v4 06/14] KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap

Use kvm_vcpu_map when mapping the L1 MSR bitmap since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/k

[PATCH v4 02/14] X86/nVMX: handle_vmptrld: Copy the VMCS12 directly from guest memory

Copy the VMCS12 directly from guest memory instead of the map->copy->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Signed-off-by: KarimAllah Ahmed --- v3

[PATCH v4 03/14] X86/nVMX: Update the PML table without mapping and unmapping the page

Update the PML table without mapping and unmapping the page. This also avoids using kvm_vcpu_gpa_to_page(..) which assumes that there is a "struct page" for guest memory. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Use kvm_write_guest_page instead of kvm_write_guest (pbonzini)

[RESEND PATCH v3 07/13] KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page

he pinning of the virtual APIC page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) - Use pfn_to_hpa instead of gfn_to_gpa --- arch/x86/kvm/vmx.c | 39 +-- 1 file changed, 13 insertions(+),

[RESEND PATCH v3 07/13] KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page

he pinning of the virtual APIC page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) - Use pfn_to_hpa instead of gfn_to_gpa --- arch/x86/kvm/vmx.c | 39 +-- 1 file changed, 13 insertions(+),

[PATCH v2] KVM/nVMX: Do not validate that posted_intr_desc_addr is page aligned

k posted-interrupt descriptor addresss on vmentry of L2") Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 38f1a16..bb0fcdb 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/

[PATCH v2] KVM/nVMX: Do not validate that posted_intr_desc_addr is page aligned

k posted-interrupt descriptor addresss on vmentry of L2") Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 38f1a16..bb0fcdb 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/

[PATCH v3 06/13] KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap

Use kvm_vcpu_map when mapping the L1 MSR bitmap since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/k

[PATCH v3 01/13] X86/nVMX: handle_vmon: Read 4 bytes from guest memory

Read the data directly from guest memory instead of the map->read->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Suggested-by: Jim Mattson Signed-off-by: KarimAllah Ahmed --- v1 -> v

[PATCH v3 05/13] KVM: Introduce a new guest mapping API

apping operations. But rather for low-frequency mappings. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Drop the caching optimization (pbonzini) - Use 'hva' instead of 'kaddr' (pbonzini) - Return 0/-EINVAL/-EFAULT instead of true/false. -EFAULT will be used for AMD patch (pbonzini) - Intro

[PATCH v3 03/13] X86/nVMX: Update the PML table without mapping and unmapping the page

Update the PML table without mapping and unmapping the page. This also avoids using kvm_vcpu_gpa_to_page(..) which assumes that there is a "struct page" for guest memory. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Use kvm_write_guest_page instead of kvm_write_guest (pbonzini)

[PATCH v3 06/13] KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap

Use kvm_vcpu_map when mapping the L1 MSR bitmap since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/k

[PATCH v3 01/13] X86/nVMX: handle_vmon: Read 4 bytes from guest memory

Read the data directly from guest memory instead of the map->read->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Suggested-by: Jim Mattson Signed-off-by: KarimAllah Ahmed --- v1 -> v

[PATCH v3 05/13] KVM: Introduce a new guest mapping API

apping operations. But rather for low-frequency mappings. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Drop the caching optimization (pbonzini) - Use 'hva' instead of 'kaddr' (pbonzini) - Return 0/-EINVAL/-EFAULT instead of true/false. -EFAULT will be used for AMD patch (pbonzini) - Intro

[PATCH v3 03/13] X86/nVMX: Update the PML table without mapping and unmapping the page

Update the PML table without mapping and unmapping the page. This also avoids using kvm_vcpu_gpa_to_page(..) which assumes that there is a "struct page" for guest memory. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Use kvm_write_guest_page instead of kvm_write_guest (pbonzini)

[PATCH v3 11/13] KVM/X86: hyperv: Use kvm_vcpu_map in synic_deliver_msg

Use kvm_vcpu_map in synic_deliver_msg since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/hyperv.c | 12 ++-- 1 fi

[PATCH v3 10/13] KVM/X86: hyperv: Use kvm_vcpu_map in synic_clear_sint_msg_pending

Use kvm_vcpu_map in synic_clear_sint_msg_pending since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/hyperv.c | 16 ++

[PATCH v3 11/13] KVM/X86: hyperv: Use kvm_vcpu_map in synic_deliver_msg

Use kvm_vcpu_map in synic_deliver_msg since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/hyperv.c | 12 ++-- 1 fi

[PATCH v3 10/13] KVM/X86: hyperv: Use kvm_vcpu_map in synic_clear_sint_msg_pending

Use kvm_vcpu_map in synic_clear_sint_msg_pending since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/hyperv.c | 16 ++

[PATCH v3 07/13] KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page

he pinning of the virtual APIC page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) - Use pfn_to_hpa instead of gfn_to_gpa --- arch/x86/kvm/vmx.c | 34 +++--- 1 file changed, 11 insertions(+),

[PATCH v3 09/13] KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated

Use kvm_vcpu_map in emulator_cmpxchg_emulated since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/x86.c | 13 ++--

[PATCH v3 07/13] KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page

he pinning of the virtual APIC page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) - Use pfn_to_hpa instead of gfn_to_gpa --- arch/x86/kvm/vmx.c | 34 +++--- 1 file changed, 11 insertions(+),

[PATCH v3 09/13] KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated

Use kvm_vcpu_map in emulator_cmpxchg_emulated since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Update to match the new API return codes --- arch/x86/kvm/x86.c | 13 ++--

[PATCH v3 00/13] KVM/X86: Introduce a new guest mapping interface

shadow VMCS support for nested. Filippo Sironi (1): X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs KarimAllah Ahmed (12): X86/nVMX: handle_vmon: Read 4 bytes from guest memory X86/nVMX: handle_vmptrld: Copy the VMCS12 directly from guest memory X86/nVMX: Update the PML ta

[PATCH v3 00/13] KVM/X86: Introduce a new guest mapping interface

shadow VMCS support for nested. Filippo Sironi (1): X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs KarimAllah Ahmed (12): X86/nVMX: handle_vmon: Read 4 bytes from guest memory X86/nVMX: handle_vmptrld: Copy the VMCS12 directly from guest memory X86/nVMX: Update the PML ta

[PATCH v3 13/13] KVM/nVMX: Use kvm_vcpu_map for accessing the shadow VMCS

Use kvm_vcpu_map for accessing the shadow VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 25 - 1 file changed, 12 insertions(+), 13 deletion

[PATCH v3 12/13] KVM/nSVM: Use the new mapping API for mapping guest memory

Use the new mapping API for mapping guest memory to avoid depending on "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/svm.c | 97 +++--- 1 file changed, 49 insertions(+), 48 deletions(-) diff --git a/arch/x86/kvm/svm.c

[PATCH v3 13/13] KVM/nVMX: Use kvm_vcpu_map for accessing the shadow VMCS

Use kvm_vcpu_map for accessing the shadow VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 25 - 1 file changed, 12 insertions(+), 13 deletion

[PATCH v3 12/13] KVM/nSVM: Use the new mapping API for mapping guest memory

Use the new mapping API for mapping guest memory to avoid depending on "struct page". Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/svm.c | 97 +++--- 1 file changed, 49 insertions(+), 48 deletions(-) diff --git a/arch/x86/kvm/svm.c

[PATCH v3 02/13] X86/nVMX: handle_vmptrld: Copy the VMCS12 directly from guest memory

Copy the VMCS12 directly from guest memory instead of the map->copy->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Massage commit message a

[PATCH v3 08/13] KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt descriptor table

e lifetime of the pinning of the interrupt descriptor table page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/kvm/vmx.c | 45 +++-- 1 file changed, 15 insertions(+),

[PATCH v3 04/13] X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs

with memremap(). Signed-off-by: Filippo Sironi Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/paging_tmpl.h | 38 +- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 14ffd97..8f7bc8f 100644

[PATCH v3 02/13] X86/nVMX: handle_vmptrld: Copy the VMCS12 directly from guest memory

Copy the VMCS12 directly from guest memory instead of the map->copy->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Massage commit message a

[PATCH v3 08/13] KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt descriptor table

e lifetime of the pinning of the interrupt descriptor table page on the host side. Signed-off-by: KarimAllah Ahmed --- v1 -> v2: - Do not change the lifecycle of the mapping (pbonzini) --- arch/x86/kvm/vmx.c | 45 +++-- 1 file changed, 15 insertions(+),

[PATCH v3 04/13] X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs

with memremap(). Signed-off-by: Filippo Sironi Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/paging_tmpl.h | 38 +- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 14ffd97..8f7bc8f 100644

[PATCH] KVM/nVMX: Do not validate that posted_intr_desc_addr is page aligned

Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 30bf860..47962f2 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -11668,7 +11668,7 @@ static int nested_vmx_check_apicv_contr

[PATCH] KVM/nVMX: Do not validate that posted_intr_desc_addr is page aligned

Signed-off-by: KarimAllah Ahmed --- arch/x86/kvm/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 30bf860..47962f2 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -11668,7 +11668,7 @@ static int nested_vmx_check_apicv_contr

[PATCH] rcu: Benefit from expedited grace period in __wait_rcu_gp

when an expedited grace-period is set, however, given the improved latency it does not really matter. Cc: Paul E. McKenney Cc: Josh Triplett Cc: Steven Rostedt Cc: Mathieu Desnoyers Cc: Lai Jiangshan Cc: linux-kernel@vger.kernel.org Signed-off-by: KarimAllah Ahmed --- kernel/rcu/update.c | 34

[PATCH] rcu: Benefit from expedited grace period in __wait_rcu_gp

when an expedited grace-period is set, however, given the improved latency it does not really matter. Cc: Paul E. McKenney Cc: Josh Triplett Cc: Steven Rostedt Cc: Mathieu Desnoyers Cc: Lai Jiangshan Cc: linux-kernel@vger.kernel.org Signed-off-by: KarimAllah Ahmed --- kernel/rcu/update.c | 34

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