diff options
| author | Janosch Frank <frankja@linux.ibm.com> | 2019-12-03 08:28:13 -0500 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2019-12-18 15:54:24 +0100 |
| commit | 5c6f0d5f46a77d77460dfb518cf1e1e4145c276e (patch) | |
| tree | 704f82320c71538828631a89d0deec8ea1e7dbba | |
| parent | 5afec76fbe2c07d03fd8c9ac525140059499637a (diff) | |
pc-bios/s390x: Fix reset psw mask
We need to set the short psw indication bit in the reset psw, as it is
a short psw.
Exposed by "s390x: Properly fetch and test the short psw on diag308
subc 0/1".
Fixes: 962982329029 ("pc-bios/s390-ccw: do a subsystem reset before running the guest")
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Message-Id: <20191203132813.2734-5-frankja@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
| -rw-r--r-- | pc-bios/s390-ccw/jump2ipl.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/pc-bios/s390-ccw/jump2ipl.c b/pc-bios/s390-ccw/jump2ipl.c index 266f1502b9..da13c43cc0 100644 --- a/pc-bios/s390-ccw/jump2ipl.c +++ b/pc-bios/s390-ccw/jump2ipl.c @@ -12,11 +12,11 @@ #define KERN_IMAGE_START 0x010000UL #define PSW_MASK_64 0x0000000100000000ULL #define PSW_MASK_32 0x0000000080000000ULL -#define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64) +#define PSW_MASK_SHORTPSW 0x0008000000000000ULL +#define RESET_PSW_MASK (PSW_MASK_SHORTPSW | PSW_MASK_32 | PSW_MASK_64) typedef struct ResetInfo { - uint32_t ipl_mask; - uint32_t ipl_addr; + uint64_t ipl_psw; uint32_t ipl_continue; } ResetInfo; @@ -50,7 +50,9 @@ void jump_to_IPL_code(uint64_t address) ResetInfo *current = 0; save = *current; - current->ipl_addr = (uint32_t) (uint64_t) &jump_to_IPL_2; + + current->ipl_psw = (uint64_t) &jump_to_IPL_2; + current->ipl_psw |= RESET_PSW_MASK; current->ipl_continue = address & 0x7fffffff; debug_print_int("set IPL addr to", current->ipl_continue); @@ -82,7 +84,7 @@ void jump_to_low_kernel(void) } /* Trying to get PSW at zero address */ - if (*((uint64_t *)0) & IPL_PSW_MASK) { + if (*((uint64_t *)0) & RESET_PSW_MASK) { jump_to_IPL_code((*((uint64_t *)0)) & 0x7fffffff); } |