HCR_GUEST_MASK looks like a random bag of hard to read acronyms. Add a tiny bit of comment so people get a chance of understanding what we're doing without having to dive into the ARM ARM. Signed-off-by: Marc Zyngier <marc.zyngier at arm.com> --- arch/arm/include/asm/kvm_arm.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm/include/asm/kvm_arm.h b/arch/arm/include/asm/kvm_arm.h index b9e4197..d76e8eb37 100644 --- a/arch/arm/include/asm/kvm_arm.h +++ b/arch/arm/include/asm/kvm_arm.h @@ -48,6 +48,19 @@ #define HCR_PTW (1 << 2) #define HCR_SWIO (1 << 1) #define HCR_VM 1 + +/* + * The bits we set in HCR: + * TAC: Trap ACTLR + * TSC: Trap SMC + * TWI: Trap WFI + * BSU_IS: Upgrade barriers to the inner shareable domain + * FB: Force broadcast of all maintainance operations + * AMO: Override CPSR.A and enable signaling with VA + * IMO: Override CPSR.I and enable signaling with VI + * FMO: Override CPSR.F and enable signaling with VF + * SWIO: Turn set/way invalidates into set/way clean+invalidate + */ #define HCR_GUEST_MASK (HCR_TSC | HCR_TWI | HCR_VM | HCR_BSU_IS | HCR_FB | \ HCR_TAC | HCR_AMO | HCR_IMO | HCR_FMO | HCR_SWIO) #define HCR_VIRT_EXCP_MASK (HCR_VA | HCR_VI | HCR_VF) -- 1.7.10.1
