diff options
| author | Nina Schoetterl-Glausch <nsg@linux.ibm.com> | 2024-03-19 19:44:20 +0300 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2024-04-17 14:37:59 +0300 |
| commit | 22fdd8ba61187582843f090f100284d9e826adca (patch) | |
| tree | a31d70243981a32ca5e4e99a67361dad902ec754 | |
| parent | 8692a24d0fae19f674d51726d179ad04ba95d958 (diff) | |
| download | linux-22fdd8ba61187582843f090f100284d9e826adca.tar.xz | |
KVM: s390: vsie: Use virt_to_phys for facility control block
In order for SIE to interpretively execute STFLE, it requires the real
or absolute address of a facility-list control block.
Before writing the location into the shadow SIE control block, convert
it from a virtual address.
We currently do not run into this bug because the lower 31 bits are the
same for virtual and physical addresses.
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Link: https://lore.kernel.org/r/20240319164420.4053380-3-nsg@linux.ibm.com
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Message-Id: <20240319164420.4053380-3-nsg@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
| -rw-r--r-- | arch/s390/kvm/vsie.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index b2c9f010f0fe..d8527a046cf7 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -12,6 +12,7 @@ #include <linux/list.h> #include <linux/bitmap.h> #include <linux/sched/signal.h> +#include <linux/io.h> #include <asm/gmap.h> #include <asm/mmu_context.h> @@ -1005,7 +1006,7 @@ static int handle_stfle(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) if (read_guest_real(vcpu, fac, &vsie_page->fac, stfle_size() * sizeof(u64))) return set_validity_icpt(scb_s, 0x1090U); - scb_s->fac = (__u32)(__u64) &vsie_page->fac; + scb_s->fac = (u32)virt_to_phys(&vsie_page->fac); } return 0; } |