From: Janis Schoetterl-Glausch <scgl@xxxxxxxxxxxxx> Currently there is only one callee passing a non zero key, but having the argument will be useful in the future. Signed-off-by: Janis Schoetterl-Glausch <scgl@xxxxxxxxxxxxx> Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx> Link: https://lore.kernel.org/kvm/20211007085027.13050-1-frankja@xxxxxxxxxxxxx/T/#md3064e13e876e0418a16f0d5a5bd9a6f2adebfd9 Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx> --- lib/s390x/asm/arch_def.h | 6 +++--- lib/s390x/sclp.c | 2 +- s390x/skrf.c | 3 +-- 3 files changed, 5 insertions(+), 6 deletions(-) diff --git a/lib/s390x/asm/arch_def.h b/lib/s390x/asm/arch_def.h index c8d2722a..b34aa792 100644 --- a/lib/s390x/asm/arch_def.h +++ b/lib/s390x/asm/arch_def.h @@ -233,15 +233,15 @@ static inline uint16_t get_machine_id(void) return cpuid; } -static inline int tprot(unsigned long addr) +static inline int tprot(unsigned long addr, char access_key) { int cc; asm volatile( - " tprot 0(%1),0\n" + " tprot 0(%1),0(%2)\n" " ipm %0\n" " srl %0,28\n" - : "=d" (cc) : "a" (addr) : "cc"); + : "=d" (cc) : "a" (addr), "a" (access_key << 4) : "cc"); return cc; } diff --git a/lib/s390x/sclp.c b/lib/s390x/sclp.c index 9502d161..02722498 100644 --- a/lib/s390x/sclp.c +++ b/lib/s390x/sclp.c @@ -217,7 +217,7 @@ void sclp_memory_setup(void) /* probe for r/w memory up to max memory size */ while (ram_size < max_ram_size) { expect_pgm_int(); - cc = tprot(ram_size + storage_increment_size - 1); + cc = tprot(ram_size + storage_increment_size - 1, 0); /* stop once we receive an exception or have protected memory */ if (clear_pgm_int() || cc != 0) break; diff --git a/s390x/skrf.c b/s390x/skrf.c index 8ca7588c..ca4efbf1 100644 --- a/s390x/skrf.c +++ b/s390x/skrf.c @@ -103,8 +103,7 @@ static void test_tprot(void) { report_prefix_push("tprot"); expect_pgm_int(); - asm volatile("tprot %[addr],0xf0(0)\n" - : : [addr] "a" (pagebuf) : ); + tprot((unsigned long)pagebuf, 0xf); check_pgm_int_code(PGM_INT_CODE_SPECIAL_OPERATION); report_prefix_pop(); } -- 2.31.1
