diff options
| author | Nico Boehr <nrb@linux.ibm.com> | 2022-11-07 11:57:27 +0300 |
|---|---|---|
| committer | Janosch Frank <frankja@linux.ibm.com> | 2023-02-08 11:53:01 +0300 |
| commit | 1abb32697a0d0a308d24fe75b1b7caf54c1f7a51 (patch) | |
| tree | 5724f4b831602e7da80ae9191f50e3e3cf9c8080 /arch/s390/kvm | |
| parent | 0dd714bfd200068e3c0d6b37861056367868e612 (diff) | |
| download | linux-1abb32697a0d0a308d24fe75b1b7caf54c1f7a51.tar.xz | |
KVM: s390: GISA: sort out physical vs virtual pointers usage
Fix virtual vs physical address confusion (which currently are the same).
In chsc_sgib(), do the virtual-physical conversion in the caller since
the caller needs to make sure it is a 31-bit address and zero has a
special meaning (disassociating the GIB).
Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Michael Mueller <mimu@linux.ibm.com>
Link: https://lore.kernel.org/r/20221107085727.1533792-1-nrb@linux.ibm.com
Message-Id: <20221107085727.1533792-1-nrb@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Diffstat (limited to 'arch/s390/kvm')
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index 1dae78deddf2..bbb280633cb8 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -3099,9 +3099,9 @@ static enum hrtimer_restart gisa_vcpu_kicker(struct hrtimer *timer) static void process_gib_alert_list(void) { struct kvm_s390_gisa_interrupt *gi; + u32 final, gisa_phys, origin = 0UL; struct kvm_s390_gisa *gisa; struct kvm *kvm; - u32 final, origin = 0UL; do { /* @@ -3127,9 +3127,10 @@ static void process_gib_alert_list(void) * interruptions asap. */ while (origin & GISA_ADDR_MASK) { - gisa = (struct kvm_s390_gisa *)(u64)origin; + gisa_phys = origin; + gisa = phys_to_virt(gisa_phys); origin = gisa->next_alert; - gisa->next_alert = (u32)(u64)gisa; + gisa->next_alert = gisa_phys; kvm = container_of(gisa, struct sie_page2, gisa)->kvm; gi = &kvm->arch.gisa_int; if (hrtimer_active(&gi->timer)) @@ -3413,6 +3414,7 @@ void kvm_s390_gib_destroy(void) int kvm_s390_gib_init(u8 nisc) { + u32 gib_origin; int rc = 0; if (!css_general_characteristics.aiv) { @@ -3434,7 +3436,8 @@ int kvm_s390_gib_init(u8 nisc) } gib->nisc = nisc; - if (chsc_sgib((u32)(u64)gib)) { + gib_origin = virt_to_phys(gib); + if (chsc_sgib(gib_origin)) { pr_err("Associating the GIB with the AIV facility failed\n"); free_page((unsigned long)gib); gib = NULL; |