Re: [Qemu-devel] ssh session with qemu-arm using busybox

On 12/03/2019 14:02, Pintu Agarwal wrote: -netdev user,id=unet,hostfwd=tcp::-:22 \ -net user \ and you 'll get guest's port 22 to be forwarded to hosts port , so you can do ssh root@localhost: from the host. I tried many different options, but unfortunately none worked for

Re: [Qemu-devel] [RFC v4 02/16] linux-headers: header update for KVM/ARM KVM_ARM_GET_MAX_VM_PHYS_SHIFT

Hi Eric, On 10/18/2018 03:30 PM, Eric Auger wrote: This is a header update against kvmarm next branch git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm kvmarm/next to get the KVM_ARM_GET_MAX_VM_PHYS_SHIFT ioctl. This allows to retrieve the IPA address range KVM supports.

Re: [Qemu-devel] [PATCH v3 15/20] kvm: arm/arm64: Allow tuning the physical address size for VM

On 10/07/18 18:03, Dave Martin wrote: On Tue, Jul 10, 2018 at 05:38:39PM +0100, Suzuki K Poulose wrote: On 09/07/18 14:37, Dave Martin wrote: On Mon, Jul 09, 2018 at 01:29:42PM +0100, Marc Zyngier wrote: On 09/07/18 12:23, Dave Martin wrote: [...] Wedging arguments into a few bits

Re: [Qemu-devel] [PATCH v3 15/20] kvm: arm/arm64: Allow tuning the physical address size for VM

On 09/07/18 14:37, Dave Martin wrote: On Mon, Jul 09, 2018 at 01:29:42PM +0100, Marc Zyngier wrote: On 09/07/18 12:23, Dave Martin wrote: On Fri, Jul 06, 2018 at 05:39:00PM +0100, Suzuki K Poulose wrote: On 07/06/2018 04:09 PM, Marc Zyngier wrote: On 06/07/18 14:49, Suzuki K Poulose wrote

Re: [Qemu-devel] [PATCH v3 15/20] kvm: arm/arm64: Allow tuning the physical address size for VM

On 07/06/2018 04:09 PM, Marc Zyngier wrote: On 06/07/18 14:49, Suzuki K Poulose wrote: On 04/07/18 23:03, Suzuki K Poulose wrote: On 07/04/2018 04:51 PM, Will Deacon wrote: Hi Suzuki, On Fri, Jun 29, 2018 at 12:15:35PM +0100, Suzuki K Poulose wrote: Allow specifying the physical address

Re: [Qemu-devel] [PATCH v3 15/20] kvm: arm/arm64: Allow tuning the physical address size for VM

On 04/07/18 23:03, Suzuki K Poulose wrote: On 07/04/2018 04:51 PM, Will Deacon wrote: Hi Suzuki, On Fri, Jun 29, 2018 at 12:15:35PM +0100, Suzuki K Poulose wrote: Allow specifying the physical address size for a new VM via the kvm_type argument for KVM_CREATE_VM ioctl. This allows us

Re: [Qemu-devel] [kvmtool test PATCH 22/24] kvmtool: arm64: Add support for guest physical address size

29, 2018 at 12:15:42PM +0100, Suzuki K Poulose wrote: Add an option to specify the physical address size used by this VM. Signed-off-by: Suzuki K Poulose --- arm/aarch64/include/kvm/kvm-config-arch.h | 5 - arm/include/arm-common/kvm-config-arch.h | 1 + 2 files changed, 5 insertions

Re: [Qemu-devel] [PATCH v3 15/20] kvm: arm/arm64: Allow tuning the physical address size for VM

On 07/04/2018 04:51 PM, Will Deacon wrote: Hi Suzuki, On Fri, Jun 29, 2018 at 12:15:35PM +0100, Suzuki K Poulose wrote: Allow specifying the physical address size for a new VM via the kvm_type argument for KVM_CREATE_VM ioctl. This allows us to finalise the stage2 page table format as early

Re: [Qemu-devel] [kvmtool test PATCH 24/24] kvmtool: arm: Add support for creating VM with PA size

Hi Will, On 07/04/2018 03:22 PM, Will Deacon wrote: On Fri, Jun 29, 2018 at 12:15:44PM +0100, Suzuki K Poulose wrote: diff --git a/arm/kvm.c b/arm/kvm.c index 5701d41..b1969be 100644 --- a/arm/kvm.c +++ b/arm/kvm.c @@ -11,6 +11,8 @@ #include #include +unsigned long kvm_arm_type

Re: [Qemu-devel] [PATCH v3 10/20] kvm: arm64: Dynamic configuration of VTTBR mask

On 07/04/2018 09:24 AM, Auger Eric wrote: + * + * We have a magic formula for the Magic_N below. + * + * Magic_N(PAGE_SIZE, Entry_Level) = 64 - ((PAGE_SHIFT - 3) * Number of levels) [0] ^^^ + * + * where number of levels = (4 - Entry_Level). ^^^ Doesn't this help make it clear ? Using

Re: [Qemu-devel] [RFC 5/6] hw/arm/virt: support kvm_type property

On 03/07/18 13:47, Andrew Jones wrote: This infrastructure already is used in hw/ppc/spapr.c Whould it be better if we would pass something like kvm-type=48bGPA? Otherwise I can decode another virt machine option (min_vm_phys_shift) in kvm_type callback. Yes, this is what I'm thinking. I

Re: [Qemu-devel] [PATCH v3 10/20] kvm: arm64: Dynamic configuration of VTTBR mask

Hi Eric, On 02/07/18 15:41, Auger Eric wrote: Hi Suzuki, On 06/29/2018 01:15 PM, Suzuki K Poulose wrote: On arm64 VTTBR_EL2:BADDR holds the base address for the stage2 translation table. The Arm ARM mandates that the bits BADDR[x-1:0] should be 0, where 'x' is defined for a given IPA Size

Re: [Qemu-devel] [PATCH v3 13/20] kvm: arm64: Configure VTCR per VM

On 02/07/18 13:16, Marc Zyngier wrote: On 29/06/18 12:15, Suzuki K Poulose wrote: We set VTCR_EL2 very early during the stage2 init and don't touch it ever. This is fine as we had a fixed IPA size. This patch changes the behavior to set the VTCR for a given VM, depending on its stage2 table

Re: [Qemu-devel] [PATCH v3 01/20] virtio: mmio-v1: Validate queue PFN

Hi Michael, On 06/29/2018 06:42 PM, Michael S. Tsirkin wrote: On Fri, Jun 29, 2018 at 12:15:21PM +0100, Suzuki K Poulose wrote: virtio-mmio with virtio-v1 uses a 32bit PFN for the queue. If the queue pfn is too large to fit in 32bits, which we could hit on arm64 systems with 52bit physical

Re: [Qemu-devel] [PATCH v3 19/20] kvm: arm64: Allow IPA size supported by the system

On 02/07/18 14:50, Marc Zyngier wrote: On 29/06/18 12:15, Suzuki K Poulose wrote: So far we have restricted the IPA size of the VM to the default value (40bits). Now that we can manage the IPA size per VM and support dynamic stage2 page tables, allow VMs to have larger IPA. This is done

Re: [Qemu-devel] [PATCH v3 16/20] kvm: arm64: Switch to per VM IPA limit

Hi Marc, On 02/07/18 14:32, Marc Zyngier wrote: On 29/06/18 12:15, Suzuki K Poulose wrote: Now that we can manage the stage2 page table per VM, switch the configuration details to per VM instance. We keep track of the IPA bits, number of page table levels and the VTCR bits (which depends

Re: [Qemu-devel] [PATCH v3 15/20] kvm: arm/arm64: Allow tuning the physical address size for VM

On 02/07/18 14:13, Marc Zyngier wrote: On 29/06/18 12:15, Suzuki K Poulose wrote: Allow specifying the physical address size for a new VM via the kvm_type argument for KVM_CREATE_VM ioctl. This allows us to finalise the stage2 page table format as early as possible and hence perform the right

Re: [Qemu-devel] [PATCH v3 09/20] kvm: arm64: Make stage2 page table layout dynamic

Hi Eric, On 02/07/18 13:14, Auger Eric wrote: Hi Suzuki, On 06/29/2018 01:15 PM, Suzuki K Poulose wrote: So far we had a static stage2 page table handling code, based on a fixed IPA of 40bits. As we prepare for a configurable IPA size per VM, make our stage2 page table code dynamic, to do

Re: [Qemu-devel] [PATCH v3 07/20] kvm: arm/arm64: Prepare for VM specific stage2 translations

Hi Eric, On 02/07/18 11:51, Auger Eric wrote: Hi Suzuki, On 06/29/2018 01:15 PM, Suzuki K Poulose wrote: Right now the stage2 page table for a VM is hard coded, assuming an IPA of 40bits. As we are about to add support for per VM IPA, prepare the stage2 page table helpers to accept the kvm

Re: [Qemu-devel] [PATCH v3 09/20] kvm: arm64: Make stage2 page table layout dynamic

On 29/06/18 12:15, Suzuki K Poulose wrote: So far we had a static stage2 page table handling code, based on a fixed IPA of 40bits. As we prepare for a configurable IPA size per VM, make our stage2 page table code dynamic, to do the right thing for a given VM. We ensure the existing condition

Re: [Qemu-devel] [PATCH v3 07/20] kvm: arm/arm64: Prepare for VM specific stage2 translations

On 02/07/18 11:12, Marc Zyngier wrote: On 29/06/18 12:15, Suzuki K Poulose wrote: Right now the stage2 page table for a VM is hard coded, assuming an IPA of 40bits. As we are about to add support for per VM IPA, prepare the stage2 page table helpers to accept the kvm instance to make the right

[Qemu-devel] [kvmtool test PATCH 23/24] kvmtool: arm64: Switch memory layout

If the guest wants to use a larger physical address space place the RAM at upper half of the address space. Otherwise, it uses the default layout. Signed-off-by: Suzuki K Poulose --- arm/aarch32/include/kvm/kvm-arch.h | 6 -- arm/aarch64/include/kvm/kvm-arch.h | 15 --- arm

[Qemu-devel] [kvmtool test PATCH 21/24] kvmtool: Allow backends to run checks on the KVM device fd

Allow architectures to perform initialisation based on the KVM device fd ioctls, even before the VM is created. Signed-off-by: Suzuki K Poulose --- include/kvm/kvm.h | 4 kvm.c | 2 ++ 2 files changed, 6 insertions(+) diff --git a/include/kvm/kvm.h b/include/kvm/kvm.h index

[Qemu-devel] [PATCH v3 16/20] kvm: arm64: Switch to per VM IPA limit

for arm64. Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm64/include/asm/kvm_host.h | 14 -- arch/arm64/include/asm/kvm_hyp.h| 3 +-- arch/arm64/include/asm/kvm_mmu.h| 20 ++-- arch/arm64/include/asm

[Qemu-devel] [PATCH v3 19/20] kvm: arm64: Allow IPA size supported by the system

code, which would need substantial changes. We could purse the solution independently and switch the page table code once we have it ready. Cc: Catalin Marinas Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Changes since V2: - Restrict the IPA size to limit the number o

[Qemu-devel] [kvmtool test PATCH 24/24] kvmtool: arm: Add support for creating VM with PA size

Specify the physical size for the VM encoded in the vm type. Signed-off-by: Suzuki K Poulose --- arm/include/arm-common/kvm-arch.h | 6 +- arm/kvm.c | 22 ++ 2 files changed, 27 insertions(+), 1 deletion(-) diff --git a/arm/include/arm-common

[Qemu-devel] [kvmtool test PATCH 22/24] kvmtool: arm64: Add support for guest physical address size

Add an option to specify the physical address size used by this VM. Signed-off-by: Suzuki K Poulose --- arm/aarch64/include/kvm/kvm-config-arch.h | 5 - arm/include/arm-common/kvm-config-arch.h | 1 + 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/arm/aarch64/include/kvm/kvm

[Qemu-devel] [PATCH v3 13/20] kvm: arm64: Configure VTCR per VM

to the guest. Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Change since V2: - Load VTCR for TLB operations --- arch/arm64/include/asm/kvm_arm.h | 19 +-- arch/arm64/include/asm/kvm_asm.h | 2 +- arch/arm64/include/asm/kvm_host.h | 9 ++--- arch/arm64

[Qemu-devel] [PATCH v3 20/20] kvm: arm64: Fall back to normal stage2 entry level

We use concatenated entry level page tables (upto 16tables) for stage2. If we don't have sufficient contiguous pages (e.g, 16 * 64K), fallback to the normal page table format, by going one level deeper if permitted. Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- New

[Qemu-devel] [PATCH v3 18/20] kvm: arm64: Add support for handling 52bit IPA

in stage1. Cc: Marc Zyngier Cc: Kristina Martsenko Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- arch/arm64/include/asm/kvm_arm.h | 7 +++ arch/arm64/kvm/hyp/switch.c | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/kvm_arm.h b/

[Qemu-devel] [PATCH v3 15/20] kvm: arm/arm64: Allow tuning the physical address size for VM

) in the bits[7:0] of the type field and can encode more information in the future if required. The IPA size is still capped at 40bits. Cc: Marc Zyngier Cc: Christoffer Dall Cc: Peter Maydel Cc: Paolo Bonzini Cc: Radim Krčmář Signed-off-by: Suzuki K Poulose --- arch/arm/include/asm/kvm_mmu.h

[Qemu-devel] [PATCH v3 17/20] vgic: Add support for 52bit guest physical address

Signed-off-by: Kristina Martsenko [ Macro clean ups, fix PROPBASER and PENDBASER accesses ] Signed-off-by: Suzuki K Poulose --- include/linux/irqchip/arm-gic-v3.h | 5 + virt/kvm/arm/vgic/vgic-its.c | 36 ++-- virt/kvm/arm/vgic/vgic-mmio-v3.c | 2 -- 3

[Qemu-devel] [PATCH v3 08/20] kvm: arm/arm64: Abstract stage2 pgd table allocation

Abstract the allocation of stage2 entry level tables for given VM, so that later we can choose to fall back to the normal page table levels (i.e, avoid entry level table concatenation) on arm64. Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Changes since V2: - New

[Qemu-devel] [PATCH v3 14/20] kvm: arm/arm64: Expose supported physical address limit for VM

to the stage2 page table. Cc: Christoffer Dall Cc: Marc Zyngier Cc: Peter Maydel Signed-off-by: Suzuki K Poulose --- Changes since V2: - Bump the ioctl number --- Documentation/virtual/kvm/api.txt | 15 +++ arch/arm/include/asm/kvm_mmu.h| 5 + arch/arm64/include/asm

[Qemu-devel] [PATCH v3 09/20] kvm: arm64: Make stage2 page table layout dynamic

u.h to the top, before including the asm/stage2_pgtable.h to avoid a forward declaration. Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Changes since V2 - Restrict the stage2 page table to allow reusing the host page table helpers for now, until we get stage1 independ

[Qemu-devel] [PATCH v3 07/20] kvm: arm/arm64: Prepare for VM specific stage2 translations

S2_PGD_SIZE. Also, moves some of the definitions dependent on kvm instance to asm/kvm_mmu.h for arm32. In that process drop the _AC() specifier constants Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Changes since V2: - Update commit description abuot the movement to asm

[Qemu-devel] [PATCH v3 11/20] kvm: arm64: Helper for computing VTCR_EL2.SL0

are about to make it dynamic, we need to calculate the SL0 at runtime per VM. This patch adds a helper to comput the value of SL0 for a given IPA. Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Changes since v2: - Part 2 of split from VTCR & VTTBR dynamic configura

[Qemu-devel] [PATCH v3 12/20] kvm: arm64: Add helper for loading the stage2 setting for a VM

do the right thing with the future changes. Cc: Christoffer Dall Cc: Marc Zyngier Signed-off-by: Suzuki K Poulose --- Changes since v2: - New patch --- arch/arm64/include/asm/kvm_hyp.h | 6 ++ arch/arm64/kvm/hyp/switch.c | 2 +- arch/arm64/kvm/hyp/tlb.c | 4 ++-- 3 files

[Qemu-devel] [PATCH v3 05/20] kvm: arm/arm64: Fix stage2_flush_memslot for 4 level page table

So far we have only supported 3 level page table with fixed IPA of 40bits. Fix stage2_flush_memslot() to accommodate for 4 level tables. Cc: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- virt/kvm/arm/mmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion

[Qemu-devel] [PATCH v3 10/20] kvm: arm64: Dynamic configuration of VTTBR mask

is a reverse engineered implementation to calculate the 'x' at runtime for a given ipa and number of page table levels. See patch for more details. Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Changes since V2: - Part 1 of spilt from VTCR & VTTBR dyn

[Qemu-devel] [PATCH v3 06/20] kvm: arm/arm64: Remove spurious WARN_ON

On a 4-level page table pgd entry can be empty, unlike a 3-level page table. Remove the spurious WARN_ON() in stage_get_pud(). Cc: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Suzuki K Poulose --- virt/kvm/arm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git

[Qemu-devel] [PATCH v3 02/20] virtio: pci-legacy: Validate queue pfn

, rather than silently breaking the devices. Cc: "Michael S. Tsirkin" Cc: Jason Wang Cc: Marc Zyngier Cc: Christoffer Dall Cc: Peter Maydel Cc: Jean-Philippe Brucker Signed-off-by: Suzuki K Poulose --- Changes since v2: - Change errno to -E2BIG --- drivers/virtio/virtio_pci_leg

[Qemu-devel] [PATCH v3 04/20] kvm: arm64: Clean up VTCR_EL2 initialisation

Use the new helper for converting the parange to the physical shift. Also, add the missing definitions for the VTCR_EL2 register fields and use them instead of hard coding numbers. Cc: Marc Zyngier Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Changes since V2 - Part 2 of the split

[Qemu-devel] [PATCH v3 03/20] arm64: Add a helper for PARange to physical shift conversion

, as it is about to move its place. Having this helper keeps the code movement cleaner. Cc: Catalin Marinas Cc: Marc Zyngier Cc: James Morse Cc: Christoffer Dall Signed-off-by: Suzuki K Poulose --- Changes since V2: - Split the patch - Limit the physical shift only for values unrecognized

[Qemu-devel] [PATCH v3 00/20] arm64: Dynamic & 52bit IPA support

k patches and address comments. Kristina Martsenko (1): vgic: Add support for 52bit guest physical address Suzuki K Poulose (19): virtio: mmio-v1: Validate queue PFN virtio: pci-legacy: Validate queue pfn arm64: Add a helper for PARange to physical shift conversion kvm: arm64: Clean up VTCR

[Qemu-devel] [PATCH v3 01/20] virtio: mmio-v1: Validate queue PFN

, rather than silently breaking the devices. Cc: "Michael S. Tsirkin" Cc: Jason Wang Cc: Marc Zyngier Cc: Christoffer Dall Cc: Peter Maydel Cc: Jean-Philippe Brucker Signed-off-by: Suzuki K Poulose --- Changes since v2: - Change errno to -E2BIG --- drivers/virtio/virtio_m

Re: [Qemu-devel] [RFC PATCH v2 2/3] utils: Add cpuinfo helper to fetch /proc/cpuinfo

On 09/05/16 04:30, Vijay Kilari wrote: Hi Suzuki, The last 5 patches are not compiling on v4.4. Looks like your patch series is not merged completely. Can you please rebase your patches and let me know. Could you please give the tree below a try ? git://linux-arm.org/linux-skp.git

Re: [Qemu-devel] [RFC PATCH v2 2/3] utils: Add cpuinfo helper to fetch /proc/cpuinfo

On 13/04/16 10:54, Vijay Kilari wrote: On Mon, Apr 11, 2016 at 3:07 PM, Suzuki K Poulose <suzuki.poul...@arm.com> wrote: On 11/04/16 07:52, Vijay Kilari wrote: Hi Suzuki, The last 5 patches are not compiling on v4.4. Looks like your patch series is not merged completely. Can you

Re: [Qemu-devel] [RFC PATCH v2 2/3] utils: Add cpuinfo helper to fetch /proc/cpuinfo

On 11/04/16 07:52, Vijay Kilari wrote: Adding Suzuki Poulose. Hi Suzuki, On Fri, Apr 8, 2016 at 3:13 PM, Peter Maydell wrote: On 8 April 2016 at 07:21, Vijay Kilari wrote: On Thu, Apr 7, 2016 at 5:15 PM, Peter Maydell

[Qemu-devel] Qemu s390x emulation

Hi I have been trying to setup a qemu session for qemu-system-s390x (on x86_64) using a kernel (with initramfs built-in the kernel) without a disk image. The kernel was built with s390 defconfig + disabled loadable modules (just to keep everything inside the kernel). $ qemu-system-s390x -M s390

Re: [Qemu-devel] Qemu s390x emulation

On 01/15/2013 04:39 PM, Alexander Graf wrote: On 15.01.2013, at 12:05, Suzuki K. Poulose wrote: Hi I have been trying to setup a qemu session for qemu-system-s390x (on x86_64) using a kernel (with initramfs built-in the kernel) without a disk image. The kernel was built with s390 defconfig