From: Janosch Frank <frankja@xxxxxxxxxxxxx> Convert the sblk to non-PV when the PV guest is destroyed. Early return in uv_init() instead of running into the assert. This is necessary since snippet_pv_init() will always call uv_init(). Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx> Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx> Message-Id: <20221021063902.10878-6-frankja@xxxxxxxxxxxxx> Reviewed-by: Steffen Eiden <seiden@xxxxxxxxxxxxx> Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx> --- lib/s390x/uv.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/lib/s390x/uv.c b/lib/s390x/uv.c index b2a43424..383271a5 100644 --- a/lib/s390x/uv.c +++ b/lib/s390x/uv.c @@ -76,7 +76,8 @@ void uv_init(void) int cc; /* Let's not do this twice */ - assert(!initialized); + if (initialized) + return; /* Query is done on initialization but let's check anyway */ assert(uvcb_qui.header.rc == 1 || uvcb_qui.header.rc == 0x100); @@ -188,6 +189,14 @@ void uv_destroy_guest(struct vm *vm) free_pages(vm->uv.conf_var_stor); free_pages((void *)(vm->uv.asce & PAGE_MASK)); + memset(&vm->uv, 0, sizeof(vm->uv)); + + /* Convert the sblk back to non-PV */ + vm->save_area.guest.asce = stctg(1); + vm->sblk->sdf = 0; + vm->sblk->sidad = 0; + vm->sblk->pv_handle_cpu = 0; + vm->sblk->pv_handle_config = 0; } int uv_unpack(struct vm *vm, uint64_t addr, uint64_t len, uint64_t tweak) -- 2.37.3
