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| author | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2024-10-22 14:05:55 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-10-29 11:49:18 +0100 |
| commit | 05066cafa925159c790904f39ddb17cfa0e96f35 (patch) | |
| tree | 18b8c2a310052ee14cb3f7ec68ff1962ee3bbd51 /arch/s390/include/asm/kvm_host.h | |
| parent | s390/mm/gmap: Fix __gmap_fault() return code (diff) | |
| download | linux-05066cafa925159c790904f39ddb17cfa0e96f35.tar.xz linux-05066cafa925159c790904f39ddb17cfa0e96f35.zip | |
s390/mm/fault: Handle guest-related program interrupts in KVM
Any program interrupt that happens in the host during the execution of
a KVM guest will now short circuit the fault handler and return to KVM
immediately. Guest fault handling (including pfault) will happen
entirely inside KVM.
When sie64a() returns zero, current->thread.gmap_int_code will contain
the program interrupt number that caused the exit, or zero if the exit
was not caused by a host program interrupt.
KVM will now take care of handling all guest faults in vcpu_post_run().
Since gmap faults will not be visible by the rest of the kernel, remove
GMAP_FAULT, the linux fault handlers for secure execution faults, the
exception table entries for the sie instruction, the nop padding after
the sie instruction, and all other references to guest faults from the
s390 code.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Co-developed-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20241022120601.167009-6-imbrenda@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/kvm_host.h')
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 8e77afbed58e..603b56bfccd3 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -527,6 +527,9 @@ struct kvm_vcpu_stat { #define PGM_REGION_FIRST_TRANS 0x39 #define PGM_REGION_SECOND_TRANS 0x3a #define PGM_REGION_THIRD_TRANS 0x3b +#define PGM_SECURE_STORAGE_ACCESS 0x3d +#define PGM_NON_SECURE_STORAGE_ACCESS 0x3e +#define PGM_SECURE_STORAGE_VIOLATION 0x3f #define PGM_MONITOR 0x40 #define PGM_PER 0x80 #define PGM_CRYPTO_OPERATION 0x119 |