Messages in this thread | | | Date | Fri, 19 Aug 2022 12:01:09 +0200 | Subject | Re: [PATCH v13 5/6] KVM: s390: pv: support for Destroy fast UVC | From | Janosch Frank <> |
| |
On 8/10/22 14:56, Claudio Imbrenda wrote: > Add support for the Destroy Secure Configuration Fast Ultravisor call, > and take advantage of it for asynchronous destroy. > > When supported, the protected guest is destroyed immediately using the > new UVC, leaving only the memory to be cleaned up asynchronously. > > Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
> --- > arch/s390/include/asm/uv.h | 10 +++++++ > arch/s390/kvm/pv.c | 57 ++++++++++++++++++++++++++++++++------ > 2 files changed, 59 insertions(+), 8 deletions(-) > > diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h > index be3ef9dd6972..28a9ad57b6f1 100644 > --- a/arch/s390/include/asm/uv.h > +++ b/arch/s390/include/asm/uv.h > @@ -34,6 +34,7 @@ > #define UVC_CMD_INIT_UV 0x000f > #define UVC_CMD_CREATE_SEC_CONF 0x0100 > #define UVC_CMD_DESTROY_SEC_CONF 0x0101 > +#define UVC_CMD_DESTROY_SEC_CONF_FAST 0x0102 > #define UVC_CMD_CREATE_SEC_CPU 0x0120 > #define UVC_CMD_DESTROY_SEC_CPU 0x0121 > #define UVC_CMD_CONV_TO_SEC_STOR 0x0200 > @@ -81,6 +82,7 @@ enum uv_cmds_inst { > BIT_UVC_CMD_UNSHARE_ALL = 20, > BIT_UVC_CMD_PIN_PAGE_SHARED = 21, > BIT_UVC_CMD_UNPIN_PAGE_SHARED = 22, > + BIT_UVC_CMD_DESTROY_SEC_CONF_FAST = 23, > BIT_UVC_CMD_DUMP_INIT = 24, > BIT_UVC_CMD_DUMP_CONFIG_STOR_STATE = 25, > BIT_UVC_CMD_DUMP_CPU = 26, > @@ -230,6 +232,14 @@ struct uv_cb_nodata { > u64 reserved20[4]; > } __packed __aligned(8); > > +/* Destroy Configuration Fast */ > +struct uv_cb_destroy_fast { > + struct uv_cb_header header; > + u64 reserved08[2]; > + u64 handle; > + u64 reserved20[5]; > +} __packed __aligned(8);
| |