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| author |  Chao Du <duchao@eswincomputing.com>
| 2024-04-02 06:26:26 +0000 |
|---|---|---|
| committer |  Anup Patel <anup@brainfault.org>
| 2024-04-08 14:06:27 +0530 |
| commit | edcbe90f128922830228b9a5656c944a5d7ac306 (patch) | |
| tree | 84f82f5284512e4762e7d3c4bc5b21e28476c42b /arch/riscv/kvm/main.c | |
| parent | Linux 6.9-rc3 (diff) | |
| download | linux-edcbe90f128922830228b9a5656c944a5d7ac306.tar.gz linux-edcbe90f128922830228b9a5656c944a5d7ac306.tar.bz2 linux-edcbe90f128922830228b9a5656c944a5d7ac306.zip | |
RISC-V: KVM: Implement kvm_arch_vcpu_ioctl_set_guest_debug()
kvm_vm_ioctl_check_extension(): Return 1 if KVM_CAP_SET_GUEST_DEBUG is
been checked.
kvm_arch_vcpu_ioctl_set_guest_debug(): Update the guest_debug flags
from userspace accordingly. Route the breakpoint exceptions to HS mode
if the VCPU is being debugged by userspace, by clearing the
corresponding bit in hedeleg.
Initialize the hedeleg configuration in kvm_riscv_vcpu_setup_config().
Write the actual CSR in kvm_arch_vcpu_load().
Signed-off-by: Chao Du <duchao@eswincomputing.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20240402062628.5425-2-duchao@eswincomputing.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/kvm/main.c')
| -rw-r--r-- | arch/riscv/kvm/main.c | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/arch/riscv/kvm/main.c b/arch/riscv/kvm/main.c index 225a435d9c9a..bab2ec34cd87 100644 --- a/arch/riscv/kvm/main.c +++ b/arch/riscv/kvm/main.c @@ -22,22 +22,8 @@ long kvm_arch_dev_ioctl(struct file *filp, int kvm_arch_hardware_enable(void) { - unsigned long hideleg, hedeleg; - - hedeleg = 0; - hedeleg |= (1UL << EXC_INST_MISALIGNED); - hedeleg |= (1UL << EXC_BREAKPOINT); - hedeleg |= (1UL << EXC_SYSCALL); - hedeleg |= (1UL << EXC_INST_PAGE_FAULT); - hedeleg |= (1UL << EXC_LOAD_PAGE_FAULT); - hedeleg |= (1UL << EXC_STORE_PAGE_FAULT); - csr_write(CSR_HEDELEG, hedeleg); - - hideleg = 0; - hideleg |= (1UL << IRQ_VS_SOFT); - hideleg |= (1UL << IRQ_VS_TIMER); - hideleg |= (1UL << IRQ_VS_EXT); - csr_write(CSR_HIDELEG, hideleg); + csr_write(CSR_HEDELEG, KVM_HEDELEG_DEFAULT); + csr_write(CSR_HIDELEG, KVM_HIDELEG_DEFAULT); /* VS should access only the time counter directly. Everything else should trap */ csr_write(CSR_HCOUNTEREN, 0x02); |