diff options
| author | Claudio Imbrenda <[email protected]> | 2024-10-22 14:05:55 +0200 |
|---|---|---|
| committer | Heiko Carstens <[email protected]> | 2024-10-29 11:49:18 +0100 |
| commit | 05066cafa925159c790904f39ddb17cfa0e96f35 (patch) | |
| tree | 18b8c2a310052ee14cb3f7ec68ff1962ee3bbd51 /arch/s390/include/asm/processor.h | |
| parent | 473aaf52b937e2401c7ad161a6197bf88e920a9a (diff) | |
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 <[email protected]>
Co-developed-by: Heiko Carstens <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Heiko Carstens <[email protected]>
Diffstat (limited to 'arch/s390/include/asm/processor.h')
| -rw-r--r-- | arch/s390/include/asm/processor.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 9a5236acc0a8..8761fd01a9f0 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -39,6 +39,7 @@ #include <asm/runtime_instr.h> #include <asm/irqflags.h> #include <asm/alternative.h> +#include <asm/fault.h> struct pcpu { unsigned long ec_mask; /* bit mask for ec_xxx functions */ @@ -187,10 +188,8 @@ struct thread_struct { unsigned long hardirq_timer; /* task cputime in hardirq context */ unsigned long softirq_timer; /* task cputime in softirq context */ const sys_call_ptr_t *sys_call_table; /* system call table address */ - unsigned long gmap_addr; /* address of last gmap fault. */ - unsigned int gmap_write_flag; /* gmap fault write indication */ + union teid gmap_teid; /* address and flags of last gmap fault */ unsigned int gmap_int_code; /* int code of last gmap fault */ - unsigned int gmap_pfault; /* signal of a pending guest pfault */ int ufpu_flags; /* user fpu flags */ int kfpu_flags; /* kernel fpu flags */ |