Hi Michal, On 2026/08/13 09:35 AM, Michal Suchánek wrote: > Hello, > > some version of the kernel patches seems to be merged in the powerpc > tree now. > > Cant his be merged now or is a refresh required?
The Linux series which introduced the UAPI changes is still in ppc/next and yet to be merged upstream. I believe the header sync can only be done once the patches are merged in mainline. Thanks, Amit > > Thanks > > Michal > > On Wed, Aug 12, 2026 at 10:38:52PM +0530, Amit Machhiwal wrote: > > This is a temporary patch intended for review and testing purposes only. > > It syncs the QEMU linux-headers with the kernel v9 changes that introduce > > the KVM_PPC_GET_COMPAT_CAPS ioctl for querying host CPU compatibility > > capabilities. The struct kvm_ppc_compat_caps places 'size' as the first > > field as required by copy_struct_from/to_user() versioning, with > > KVM_PPC_COMPAT_CAPS_SIZE_VER0 (24) defined as the frozen version-floor > > constant. The capability number is KVM_CAP_PPC_COMPAT_CAPS (250) and > > the ioctl is defined as _IO so the ioctl number remains stable if the > > struct grows in future versions. Capability bit definitions for POWER9, > > POWER10, and POWER11 compatibility modes are also included. > > > > The actual header sync will be done via scripts/update-linux-headers.sh > > once the kernel changes [1] are merged upstream. > > > > [1] > > https://lore.kernel.org/all/[email protected]/ > > > > Tested-by: Gautam Menghani <[email protected]> > > Reviewed-by: Gautam Menghani <[email protected]> > > Tested-by: Anushree Mathur <[email protected]> > > Signed-off-by: Amit Machhiwal <[email protected]> > > --- > > No changes in this version. > > > > linux-headers/asm-powerpc/kvm.h | 19 +++++++++++++++++++ > > linux-headers/linux/kvm.h | 3 +++ > > 2 files changed, 22 insertions(+) > > > > diff --git a/linux-headers/asm-powerpc/kvm.h > > b/linux-headers/asm-powerpc/kvm.h > > index 077c5437f521..2c229fe0562c 100644 > > --- a/linux-headers/asm-powerpc/kvm.h > > +++ b/linux-headers/asm-powerpc/kvm.h > > @@ -437,6 +437,25 @@ struct kvm_ppc_cpu_char { > > __u64 behaviour_mask; /* valid bits in behaviour */ > > }; > > > > +/* For KVM_PPC_GET_COMPAT_CAPS */ > > +struct kvm_ppc_compat_caps { > > + __u64 size; /* Size of this structure */ > > + __u64 flags; /* Reserved for future use */ > > + __u64 compat_capabilities; /* Capabilities supported by the host */ > > +}; > > +#define KVM_PPC_COMPAT_CAPS_SIZE_VER0 24 /* sizeof first published > > struct */ > > + > > +/* > > + * Capability bits for compat_capabilities field in kvm_ppc_compat_caps. > > + * These bits indicate which processor compatibility modes are supported. > > + */ > > +#define KVM_PPC_COMPAT_CAP_POWER9 (1ULL << 62) > > +#define KVM_PPC_COMPAT_CAP_POWER10 (1ULL << 61) > > +#define KVM_PPC_COMPAT_CAP_POWER11 (1ULL << 60) > > +#define KVM_PPC_COMPAT_BITMASK (KVM_PPC_COMPAT_CAP_POWER9 | \ > > + KVM_PPC_COMPAT_CAP_POWER10 | \ > > + KVM_PPC_COMPAT_CAP_POWER11) > > + > > /* > > * Values for character and character_mask. > > * These are identical to the values used by H_GET_CPU_CHARACTERISTICS. > > diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h > > index dd52e2a65bfd..aea4ab5c6953 100644 > > --- a/linux-headers/linux/kvm.h > > +++ b/linux-headers/linux/kvm.h > > @@ -986,6 +986,7 @@ struct kvm_enable_cap { > > #define KVM_CAP_S390_KEYOP 247 > > #define KVM_CAP_S390_VSIE_ESAMODE 248 > > #define KVM_CAP_S390_HPAGE_2G 249 > > +#define KVM_CAP_PPC_COMPAT_CAPS 250 > > > > struct kvm_irq_routing_irqchip { > > __u32 irqchip; > > @@ -1330,6 +1331,8 @@ struct kvm_s390_keyop { > > /* Available with KVM_CAP_COUNTER_OFFSET */ > > #define KVM_ARM_SET_COUNTER_OFFSET _IOW(KVMIO, 0xb5, struct > > kvm_arm_counter_offset) > > #define KVM_ARM_GET_REG_WRITABLE_MASKS _IOR(KVMIO, 0xb6, struct > > reg_mask_range) > > +/* Available with KVM_CAP_PPC_COMPAT_CAPS */ > > +#define KVM_PPC_GET_COMPAT_CAPS _IO(KVMIO, 0xb8) > > > > /* ioctl for vm fd */ > > #define KVM_CREATE_DEVICE _IOWR(KVMIO, 0xe0, struct kvm_create_device) > > -- > > 2.50.1 (Apple Git-155) > > > >
