From: Alistair Francis <alistair.francis@wdc.com> To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Cc: alistair23@gmail.com, Anup.Patel@wdc.com, palmer@sifive.com, alistair.francis@wdc.com, Atish.Patra@wdc.com Subject: [Qemu-devel] [PATCH v1 00/28] Add RISC-V Hypervisor Extension v0.4 Date: Fri, 23 Aug 2019 16:37:49 -0700 [thread overview] Message-ID: <cover.1566603412.git.alistair.francis@wdc.com> (raw) This patch series adds the RISC-V Hypervisor extension v0.4. This is the latest draft spec of the Hypervisor extension. The Hypervisor extension is disabled by default, so this series should result in no changes to anyone using QEMU unless they enable the extension. The extention can be enabled with the -cpu property (see below). At the moment the spec does not include information about the mstatush register. Although this information has since been merged into the master spec. As it is only adding support for 32-bit I have added this register to this series. Testing of this implementation has been done by using the baremetal Xvisor Hypervisor. We are able to run two Linux guests (that's all I have tried) as guests in 64-bit. In 32-bit so far I can only run baremetal guests, but I think this is a baremetal boot loader issue and not an issue in QEMU. The RISC-V KVM implementation was also written using these patches. The KVM implementation is currently under review. These patches result in a reproducable race when booting a SMP Linux guest inside a SMP Linux KVM host. This will need to be fixed. At the moment this spec is in a draft state and is subject to change. As QEMU is extreamly useful in early bring up I think it makes sense for QEMU to support non-frozen extensions. Thanks to Anup for doing the initial port of Xvisor. The port is avaliable here: https://github.com/avpatel/xvisor-next and will run on QEMU. Also thanks to Atish for implementing the SBI call support in Xvisor and for lots of help debugging. To run this yourself: 1. Apply this patch series to QEMU. The latest branch can be found here: https://github.com/alistair23/qemu/tree/mainline/alistair/riscv-hyp-ext-v0.4.next 2. Get the version of OpenSBI that supports the H extension. This can be found here: https://github.com/riscv/opensbi/tree/hyp_ext_changes_v1 3. Build the next release of Xvisor. It is available here: https://github.com/avpatel/xvisor-next 4. Make sure you build the Xvisor tests, see here for details: https://github.com/avpatel/xvisor-next/tree/master/tests/riscv/virt64/linux 5. Run QEMU: ./riscv64-softmmu/qemu-system-riscv64 -nographic \ -machine virt -cpu rv64,x-h=true\ -serial mon:stdio -serial null -m 4G \ -device loader,file=vmm.bin,addr=0x80200000 \ -kernel fw_jump.elf \ -initrd vmm-disk-linux.img \ -append "vmm.console=uart@10000000 vmm.bootcmd=\"vfs mount initrd /;vfs run /boot.xscript;vfs cat /system/banner.txt\"" Once you get to the prompt you can start the geust by running: guest kick guest0 You can then bind to the serial port using: vserial bind guest0/uart0 Then you can start Linux using: autoexec This was all tested with the mainline 5.2/5.3 kernels. There is very early work on a Xen port as well which is avaliable here: https://github.com/alistair23/xen/tree/alistair/riscv-port ToDo/Issues - Get 32-bit fully working - Fix KVM SMP race condition Based-on: cover.1566573576.git.alistair.francis@wdc.com Alistair Francis (28): target/riscv: Add the Hypervisor extension target/riscv: Add the virtulisation mode target/riscv: Add the force HS exception mode target/riscv: Fix CSR perm checking for HS mode target/riscv: Add the Hypervisor CSRs to CPUState target/riscv: Print priv and virt in disas log target/riscv: Dump Hypervisor registers if enabled target/riscv: Add Hypervisor CSR access functions target/riscv: Add Hypervisor virtual CSRs accesses target/riscv: Convert mie and mstatus to pointers target/riscv: Add background register swapping function target/riscv: Add support for virtual interrupt setting target/ricsv: Flush the TLB on virtulisation mode changes target/riscv: Generate illegal instruction on WFI when V=1 riscv: plic: Always set sip.SEIP bit for HS target/riscv: Add hypvervisor trap support target/riscv: Add Hypervisor trap return support target/riscv: Add hfence instructions target/riscv: Disable guest FP support based on virtual status target/riscv: Mark both sstatus and vsstatus as dirty target/riscv: Respect MPRV and SPRV for floating point ops target/riscv: Allow specifying MMU stage target/riscv: Allow specifying number of MMU stages target/riscv: Implement second stage MMU target/riscv: Call the second stage MMU in virtualisation mode target/riscv: Add support for the 32-bit MSTATUSH CSR target/riscv: Add the MSTATUS_MPV_ISSET helper macro target/riscv: Allow enabling the Hypervisor extension hw/riscv/sifive_plic.c | 12 +- target/riscv/cpu.c | 61 ++- target/riscv/cpu.h | 68 ++- target/riscv/cpu_bits.h | 48 +- target/riscv/cpu_helper.c | 485 ++++++++++++++++-- target/riscv/csr.c | 252 ++++++++- target/riscv/insn32.decode | 23 +- .../riscv/insn_trans/trans_privileged.inc.c | 40 ++ target/riscv/op_helper.c | 81 ++- target/riscv/translate.c | 34 ++ 10 files changed, 998 insertions(+), 106 deletions(-) -- 2.22.0
WARNING: multiple messages have this Message-ID (diff)
From: Alistair Francis <alistair.francis@wdc.com> To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Cc: palmer@sifive.com, alistair.francis@wdc.com, alistair23@gmail.com, Atish.Patra@wdc.com, Anup.Patel@wdc.com Subject: [Qemu-riscv] [PATCH v1 00/28] Add RISC-V Hypervisor Extension v0.4 Date: Fri, 23 Aug 2019 16:37:49 -0700 [thread overview] Message-ID: <cover.1566603412.git.alistair.francis@wdc.com> (raw) This patch series adds the RISC-V Hypervisor extension v0.4. This is the latest draft spec of the Hypervisor extension. The Hypervisor extension is disabled by default, so this series should result in no changes to anyone using QEMU unless they enable the extension. The extention can be enabled with the -cpu property (see below). At the moment the spec does not include information about the mstatush register. Although this information has since been merged into the master spec. As it is only adding support for 32-bit I have added this register to this series. Testing of this implementation has been done by using the baremetal Xvisor Hypervisor. We are able to run two Linux guests (that's all I have tried) as guests in 64-bit. In 32-bit so far I can only run baremetal guests, but I think this is a baremetal boot loader issue and not an issue in QEMU. The RISC-V KVM implementation was also written using these patches. The KVM implementation is currently under review. These patches result in a reproducable race when booting a SMP Linux guest inside a SMP Linux KVM host. This will need to be fixed. At the moment this spec is in a draft state and is subject to change. As QEMU is extreamly useful in early bring up I think it makes sense for QEMU to support non-frozen extensions. Thanks to Anup for doing the initial port of Xvisor. The port is avaliable here: https://github.com/avpatel/xvisor-next and will run on QEMU. Also thanks to Atish for implementing the SBI call support in Xvisor and for lots of help debugging. To run this yourself: 1. Apply this patch series to QEMU. The latest branch can be found here: https://github.com/alistair23/qemu/tree/mainline/alistair/riscv-hyp-ext-v0.4.next 2. Get the version of OpenSBI that supports the H extension. This can be found here: https://github.com/riscv/opensbi/tree/hyp_ext_changes_v1 3. Build the next release of Xvisor. It is available here: https://github.com/avpatel/xvisor-next 4. Make sure you build the Xvisor tests, see here for details: https://github.com/avpatel/xvisor-next/tree/master/tests/riscv/virt64/linux 5. Run QEMU: ./riscv64-softmmu/qemu-system-riscv64 -nographic \ -machine virt -cpu rv64,x-h=true\ -serial mon:stdio -serial null -m 4G \ -device loader,file=vmm.bin,addr=0x80200000 \ -kernel fw_jump.elf \ -initrd vmm-disk-linux.img \ -append "vmm.console=uart@10000000 vmm.bootcmd=\"vfs mount initrd /;vfs run /boot.xscript;vfs cat /system/banner.txt\"" Once you get to the prompt you can start the geust by running: guest kick guest0 You can then bind to the serial port using: vserial bind guest0/uart0 Then you can start Linux using: autoexec This was all tested with the mainline 5.2/5.3 kernels. There is very early work on a Xen port as well which is avaliable here: https://github.com/alistair23/xen/tree/alistair/riscv-port ToDo/Issues - Get 32-bit fully working - Fix KVM SMP race condition Based-on: cover.1566573576.git.alistair.francis@wdc.com Alistair Francis (28): target/riscv: Add the Hypervisor extension target/riscv: Add the virtulisation mode target/riscv: Add the force HS exception mode target/riscv: Fix CSR perm checking for HS mode target/riscv: Add the Hypervisor CSRs to CPUState target/riscv: Print priv and virt in disas log target/riscv: Dump Hypervisor registers if enabled target/riscv: Add Hypervisor CSR access functions target/riscv: Add Hypervisor virtual CSRs accesses target/riscv: Convert mie and mstatus to pointers target/riscv: Add background register swapping function target/riscv: Add support for virtual interrupt setting target/ricsv: Flush the TLB on virtulisation mode changes target/riscv: Generate illegal instruction on WFI when V=1 riscv: plic: Always set sip.SEIP bit for HS target/riscv: Add hypvervisor trap support target/riscv: Add Hypervisor trap return support target/riscv: Add hfence instructions target/riscv: Disable guest FP support based on virtual status target/riscv: Mark both sstatus and vsstatus as dirty target/riscv: Respect MPRV and SPRV for floating point ops target/riscv: Allow specifying MMU stage target/riscv: Allow specifying number of MMU stages target/riscv: Implement second stage MMU target/riscv: Call the second stage MMU in virtualisation mode target/riscv: Add support for the 32-bit MSTATUSH CSR target/riscv: Add the MSTATUS_MPV_ISSET helper macro target/riscv: Allow enabling the Hypervisor extension hw/riscv/sifive_plic.c | 12 +- target/riscv/cpu.c | 61 ++- target/riscv/cpu.h | 68 ++- target/riscv/cpu_bits.h | 48 +- target/riscv/cpu_helper.c | 485 ++++++++++++++++-- target/riscv/csr.c | 252 ++++++++- target/riscv/insn32.decode | 23 +- .../riscv/insn_trans/trans_privileged.inc.c | 40 ++ target/riscv/op_helper.c | 81 ++- target/riscv/translate.c | 34 ++ 10 files changed, 998 insertions(+), 106 deletions(-) -- 2.22.0
next reply other threads:[~2019-08-23 23:48 UTC|newest] Thread overview: 150+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-08-23 23:37 Alistair Francis [this message] 2019-08-23 23:37 ` [Qemu-riscv] [PATCH v1 00/28] Add RISC-V Hypervisor Extension v0.4 Alistair Francis 2019-08-23 23:37 ` [Qemu-devel] [PATCH v1 01/28] target/riscv: Add the Hypervisor extension Alistair Francis 2019-08-23 23:37 ` [Qemu-riscv] " Alistair Francis 2019-08-27 15:26 ` [Qemu-devel] " Chih-Min Chao 2019-08-27 15:26 ` [Qemu-riscv] " Chih-Min Chao 2019-09-10 13:43 ` Palmer Dabbelt 2019-09-10 13:43 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:37 ` [Qemu-devel] [PATCH v1 02/28] target/riscv: Add the virtulisation mode Alistair Francis 2019-08-23 23:37 ` [Qemu-riscv] " Alistair Francis 2019-08-27 15:44 ` [Qemu-devel] " Chih-Min Chao 2019-08-27 15:44 ` Chih-Min Chao 2019-08-28 0:08 ` [Qemu-devel] " Alistair Francis 2019-08-28 0:08 ` Alistair Francis 2019-09-10 13:44 ` [Qemu-devel] " Palmer Dabbelt 2019-09-10 13:44 ` [Qemu-riscv] " Palmer Dabbelt 2019-09-16 15:57 ` [Qemu-devel] " Alistair Francis 2019-09-16 15:57 ` [Qemu-riscv] " Alistair Francis 2019-08-23 23:37 ` [Qemu-devel] [PATCH v1 03/28] target/riscv: Add the force HS exception mode Alistair Francis 2019-08-23 23:37 ` [Qemu-riscv] " Alistair Francis 2019-08-27 15:46 ` [Qemu-devel] " Chih-Min Chao 2019-08-27 15:46 ` [Qemu-riscv] " Chih-Min Chao 2019-09-10 14:48 ` Palmer Dabbelt 2019-09-10 14:48 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 04/28] target/riscv: Fix CSR perm checking for HS mode Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-10 14:48 ` [Qemu-devel] " Palmer Dabbelt 2019-09-10 14:48 ` [Qemu-riscv] " Palmer Dabbelt 2019-10-16 20:56 ` Alistair Francis 2019-10-16 20:56 ` Alistair Francis 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 05/28] target/riscv: Add the Hypervisor CSRs to CPUState Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-08-27 15:50 ` [Qemu-devel] " Chih-Min Chao 2019-08-27 15:50 ` Chih-Min Chao 2019-09-10 14:48 ` [Qemu-devel] " Palmer Dabbelt 2019-09-10 14:48 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 06/28] target/riscv: Print priv and virt in disas log Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-10 14:48 ` [Qemu-devel] " Palmer Dabbelt 2019-09-10 14:48 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 07/28] target/riscv: Dump Hypervisor registers if enabled Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-10 14:48 ` [Qemu-devel] " Palmer Dabbelt 2019-09-10 14:48 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 08/28] target/riscv: Add Hypervisor CSR access functions Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-10 14:48 ` [Qemu-devel] " Palmer Dabbelt 2019-09-10 14:48 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 09/28] target/riscv: Add Hypervisor virtual CSRs accesses Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-10 14:48 ` [Qemu-devel] " Palmer Dabbelt 2019-09-10 14:48 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 10/28] target/riscv: Convert mie and mstatus to pointers Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-11 8:24 ` [Qemu-devel] " Palmer Dabbelt 2019-09-11 8:24 ` [Qemu-riscv] " Palmer Dabbelt 2019-09-11 14:54 ` [Qemu-devel] " Jonathan Behrens 2019-09-11 14:54 ` Jonathan Behrens 2019-09-17 23:33 ` [Qemu-devel] " Alistair Francis 2019-09-17 23:33 ` Alistair Francis 2019-09-18 1:59 ` [Qemu-devel] " Jonathan Behrens 2019-09-18 1:59 ` Jonathan Behrens 2019-09-18 23:47 ` [Qemu-devel] " Alistair Francis 2019-09-18 23:47 ` Alistair Francis 2019-09-19 14:50 ` [Qemu-devel] " Richard Henderson 2019-09-19 14:50 ` [Qemu-riscv] [Qemu-devel] " Richard Henderson 2019-09-19 16:58 ` [Qemu-devel] [Qemu-riscv] " Jonathan Behrens 2019-09-19 16:58 ` Jonathan Behrens 2019-10-25 20:28 ` Alistair Francis 2019-10-25 20:28 ` Alistair Francis 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 11/28] target/riscv: Add background register swapping function Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-11 14:17 ` [Qemu-devel] " Palmer Dabbelt 2019-09-11 14:17 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 12/28] target/riscv: Add support for virtual interrupt setting Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-14 20:30 ` [Qemu-devel] " Palmer Dabbelt 2019-09-14 20:30 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 13/28] target/ricsv: Flush the TLB on virtulisation mode changes Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-14 20:30 ` [Qemu-devel] " Palmer Dabbelt 2019-09-14 20:30 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 14/28] target/riscv: Generate illegal instruction on WFI when V=1 Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-14 20:30 ` [Qemu-devel] " Palmer Dabbelt 2019-09-14 20:30 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 15/28] riscv: plic: Always set sip.SEIP bit for HS Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-14 20:32 ` [Qemu-devel] " Palmer Dabbelt 2019-09-14 20:32 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 16/28] target/riscv: Add hypvervisor trap support Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-09-20 14:01 ` Palmer Dabbelt 2019-09-20 14:01 ` Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 17/28] target/riscv: Add Hypervisor trap return support Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-10-01 18:33 ` Palmer Dabbelt 2019-10-01 18:33 ` Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 18/28] target/riscv: Add hfence instructions Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-10-01 18:34 ` Palmer Dabbelt 2019-10-01 18:34 ` Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 19/28] target/riscv: Disable guest FP support based on virtual status Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-10-01 18:34 ` Palmer Dabbelt 2019-10-01 18:34 ` Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 20/28] target/riscv: Mark both sstatus and vsstatus as dirty Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-10-01 18:34 ` Palmer Dabbelt 2019-10-01 18:34 ` Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 21/28] target/riscv: Respect MPRV and SPRV for floating point ops Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-10-02 23:52 ` Palmer Dabbelt 2019-10-02 23:52 ` Palmer Dabbelt 2019-10-16 21:01 ` Alistair Francis 2019-10-16 21:01 ` Alistair Francis 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 22/28] target/riscv: Allow specifying MMU stage Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-10-03 15:53 ` Palmer Dabbelt 2019-10-03 15:53 ` Palmer Dabbelt 2019-10-07 18:05 ` Alistair Francis 2019-10-07 18:05 ` Alistair Francis 2019-10-16 19:02 ` Palmer Dabbelt 2019-10-16 19:02 ` Palmer Dabbelt 2019-10-16 21:25 ` Alistair Francis 2019-10-16 21:25 ` Alistair Francis 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 23/28] target/riscv: Allow specifying number of MMU stages Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 24/28] target/riscv: Implement second stage MMU Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-10-07 16:15 ` Palmer Dabbelt 2019-10-07 16:15 ` Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 25/28] target/riscv: Call the second stage MMU in virtualisation mode Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-10-08 17:54 ` Palmer Dabbelt 2019-10-08 17:54 ` Palmer Dabbelt 2019-08-23 23:38 ` [Qemu-devel] [PATCH v1 26/28] target/riscv: Add support for the 32-bit MSTATUSH CSR Alistair Francis 2019-08-23 23:38 ` [Qemu-riscv] " Alistair Francis 2019-10-08 18:36 ` Palmer Dabbelt 2019-10-08 18:36 ` Palmer Dabbelt 2019-08-23 23:39 ` [Qemu-devel] [PATCH v1 27/28] target/riscv: Add the MSTATUS_MPV_ISSET helper macro Alistair Francis 2019-08-23 23:39 ` [Qemu-riscv] " Alistair Francis 2019-10-08 18:36 ` Palmer Dabbelt 2019-10-08 18:36 ` Palmer Dabbelt 2019-10-16 21:14 ` Alistair Francis 2019-10-16 21:14 ` Alistair Francis 2019-08-23 23:39 ` [Qemu-devel] [PATCH v1 28/28] target/riscv: Allow enabling the Hypervisor extension Alistair Francis 2019-08-23 23:39 ` [Qemu-riscv] " Alistair Francis 2019-10-08 18:53 ` Palmer Dabbelt 2019-10-08 18:53 ` Palmer Dabbelt
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