From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev
Cc: Marc Zyngier <maz@kernel.org>, Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Mingwei Zhang <mizhang@google.com>,
Colton Lewis <coltonlewis@google.com>,
Raghavendra Rao Ananta <rananta@google.com>,
James Clark <james.clark@linaro.org>,
Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH v3 06/16] KVM: arm64: Clean up KVM_SET_GUEST_DEBUG handler
Date: Mon, 9 Dec 2024 10:09:16 -0800 [thread overview]
Message-ID: <20241209180926.2161373-7-oliver.upton@linux.dev> (raw)
In-Reply-To: <20241209180926.2161373-1-oliver.upton@linux.dev>
No particular reason other than it isn't nice to look at.
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
arch/arm64/kvm/guest.c | 29 +++++++++++------------------
1 file changed, 11 insertions(+), 18 deletions(-)
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 12dad841f2a5..1fe097c67766 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -917,31 +917,24 @@ int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
struct kvm_guest_debug *dbg)
{
- int ret = 0;
-
trace_kvm_set_guest_debug(vcpu, dbg->control);
- if (dbg->control & ~KVM_GUESTDBG_VALID_MASK) {
- ret = -EINVAL;
- goto out;
- }
-
- if (dbg->control & KVM_GUESTDBG_ENABLE) {
- vcpu->guest_debug = dbg->control;
-
- /* Hardware assisted Break and Watch points */
- if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW) {
- vcpu->arch.external_debug_state = dbg->arch;
- }
+ if (dbg->control & ~KVM_GUESTDBG_VALID_MASK)
+ return -EINVAL;
- } else {
- /* If not enabled clear all flags */
+ if (!(dbg->control & KVM_GUESTDBG_ENABLE)) {
vcpu->guest_debug = 0;
vcpu_clear_flag(vcpu, DBG_SS_ACTIVE_PENDING);
+ return 0;
}
-out:
- return ret;
+ vcpu->guest_debug = dbg->control;
+
+ /* Hardware assisted Break and Watch points */
+ if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW)
+ vcpu->arch.external_debug_state = dbg->arch;
+
+ return 0;
}
int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
--
2.39.5
next prev parent reply other threads:[~2024-12-09 18:09 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-09 18:09 [PATCH v3 00/16] KVM: arm64: Debug cleanups Oliver Upton
2024-12-09 18:09 ` [PATCH v3 01/16] KVM: arm64: Drop MDSCR_EL1_DEBUG_MASK Oliver Upton
2024-12-09 18:09 ` [PATCH v3 02/16] KVM: arm64: Get rid of __kvm_get_mdcr_el2() and related warts Oliver Upton
2024-12-09 18:09 ` [PATCH v3 03/16] KVM: arm64: Track presence of SPE/TRBE in kvm_host_data instead of vCPU Oliver Upton
2024-12-09 18:09 ` [PATCH v3 04/16] KVM: arm64: Move host SME/SVE tracking flags to host data Oliver Upton
2024-12-09 18:09 ` [PATCH v3 05/16] KVM: arm64: Evaluate debug owner at vcpu_load() Oliver Upton
2024-12-09 18:09 ` Oliver Upton [this message]
2024-12-09 18:09 ` [PATCH v3 07/16] KVM: arm64: Select debug state to save/restore based on debug owner Oliver Upton
2024-12-09 18:09 ` [PATCH v3 08/16] KVM: arm64: Remove debug tracepoints Oliver Upton
2024-12-09 18:09 ` [PATCH v3 09/16] KVM: arm64: Remove vestiges of debug_ptr Oliver Upton
2024-12-09 18:09 ` [PATCH v3 10/16] KVM: arm64: Use debug_owner to track if debug regs need save/restore Oliver Upton
2024-12-18 18:11 ` Marc Zyngier
2024-12-18 20:36 ` Oliver Upton
2024-12-09 18:09 ` [PATCH v3 11/16] KVM: arm64: Reload vCPU for accesses to OSLAR_EL1 Oliver Upton
2024-12-09 18:09 ` [PATCH v3 12/16] KVM: arm64: Compute MDCR_EL2 at vcpu_load() Oliver Upton
2024-12-18 18:40 ` Marc Zyngier
2024-12-19 18:00 ` Oliver Upton
2024-12-19 18:16 ` Marc Zyngier
2024-12-09 18:09 ` [PATCH v3 13/16] KVM: arm64: Don't hijack guest context MDSCR_EL1 Oliver Upton
2024-12-09 18:09 ` [PATCH v3 14/16] KVM: arm64: Manage software step state at load/put Oliver Upton
2024-12-09 18:09 ` [PATCH v3 15/16] KVM: arm64: nv: Honor MDCR_EL2.TDE routing for debug exceptions Oliver Upton
2024-12-09 18:09 ` [PATCH v3 16/16] KVM: arm64: Avoid reading ID_AA64DFR0_EL1 for debug save/restore Oliver Upton
2024-12-10 10:30 ` [PATCH v3 00/16] KVM: arm64: Debug cleanups James Clark
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