[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20230928151611.3042443-3-james.clark@arm.com>
Date: Thu, 28 Sep 2023 16:16:06 +0100
From: James Clark <james.clark@....com>
To: coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
kvmarm@...ts.linux.dev, broonie@...nel.org, maz@...nel.org,
suzuki.poulose@....com
Cc: James Clark <james.clark@....com>,
Oliver Upton <oliver.upton@...ux.dev>,
James Morse <james.morse@....com>,
Zenghui Yu <yuzenghui@...wei.com>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Mike Leach <mike.leach@...aro.org>,
Leo Yan <leo.yan@...aro.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Anshuman Khandual <anshuman.khandual@....com>,
Rob Herring <robh@...nel.org>,
Jintack Lim <jintack.lim@...aro.org>,
Joey Gouly <joey.gouly@....com>, linux-kernel@...r.kernel.org
Subject: [PATCH v1 2/5] arm64: KVM: Rename DEBUG_STATE_SAVE_TRBE to DEBUG_STATE_SAVE_TRFCR
This flag actually causes the TRFCR register to be saved, so rename it
to that effect.
Currently it only happens when TRBE is used, but in a later commit
TRFCR will be saved and restored even if TRBE isn't used, so the new
name will be more accurate.
Signed-off-by: James Clark <james.clark@....com>
---
arch/arm64/include/asm/kvm_host.h | 4 ++--
arch/arm64/kvm/debug.c | 4 ++--
arch/arm64/kvm/hyp/nvhe/debug-sr.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index c3a17888f183..498f922f4f41 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -713,8 +713,8 @@ struct kvm_vcpu_arch {
#define DEBUG_DIRTY __vcpu_single_flag(iflags, BIT(4))
/* Save SPE context if active */
#define DEBUG_STATE_SAVE_SPE __vcpu_single_flag(iflags, BIT(5))
-/* Save TRBE context if active */
-#define DEBUG_STATE_SAVE_TRBE __vcpu_single_flag(iflags, BIT(6))
+/* Save TRFCR and disable TRBE if necessary */
+#define DEBUG_STATE_SAVE_TRFCR __vcpu_single_flag(iflags, BIT(6))
/* vcpu running in HYP context */
#define VCPU_HYP_CONTEXT __vcpu_single_flag(iflags, BIT(7))
diff --git a/arch/arm64/kvm/debug.c b/arch/arm64/kvm/debug.c
index 8725291cb00a..6a1bad1a921b 100644
--- a/arch/arm64/kvm/debug.c
+++ b/arch/arm64/kvm/debug.c
@@ -334,11 +334,11 @@ void kvm_arch_vcpu_load_debug_state_flags(struct kvm_vcpu *vcpu)
/* Check if we have TRBE implemented and available at the host */
if (cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_TraceBuffer_SHIFT) &&
!(read_sysreg_s(SYS_TRBIDR_EL1) & TRBIDR_EL1_P))
- vcpu_set_flag(vcpu, DEBUG_STATE_SAVE_TRBE);
+ vcpu_set_flag(vcpu, DEBUG_STATE_SAVE_TRFCR);
}
void kvm_arch_vcpu_put_debug_state_flags(struct kvm_vcpu *vcpu)
{
vcpu_clear_flag(vcpu, DEBUG_STATE_SAVE_SPE);
- vcpu_clear_flag(vcpu, DEBUG_STATE_SAVE_TRBE);
+ vcpu_clear_flag(vcpu, DEBUG_STATE_SAVE_TRFCR);
}
diff --git a/arch/arm64/kvm/hyp/nvhe/debug-sr.c b/arch/arm64/kvm/hyp/nvhe/debug-sr.c
index 4558c02eb352..89c208112eb7 100644
--- a/arch/arm64/kvm/hyp/nvhe/debug-sr.c
+++ b/arch/arm64/kvm/hyp/nvhe/debug-sr.c
@@ -85,7 +85,7 @@ void __debug_save_host_buffers_nvhe(struct kvm_vcpu *vcpu)
if (vcpu_get_flag(vcpu, DEBUG_STATE_SAVE_SPE))
__debug_save_spe(&vcpu->arch.host_debug_state.pmscr_el1);
/* Disable and flush Self-Hosted Trace generation */
- if (vcpu_get_flag(vcpu, DEBUG_STATE_SAVE_TRBE))
+ if (vcpu_get_flag(vcpu, DEBUG_STATE_SAVE_TRFCR))
__debug_save_trace(&vcpu->arch.host_debug_state.trfcr_el1);
}
@@ -98,7 +98,7 @@ void __debug_restore_host_buffers_nvhe(struct kvm_vcpu *vcpu)
{
if (vcpu_get_flag(vcpu, DEBUG_STATE_SAVE_SPE))
__debug_restore_spe(vcpu->arch.host_debug_state.pmscr_el1);
- if (vcpu_get_flag(vcpu, DEBUG_STATE_SAVE_TRBE))
+ if (vcpu_get_flag(vcpu, DEBUG_STATE_SAVE_TRFCR))
__debug_restore_trace(vcpu->arch.host_debug_state.trfcr_el1);
}
--
2.34.1
Powered by blists - more mailing lists