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Kirill Smelkov
linux
Commits
16314874
Commit
16314874
authored
Jul 30, 2020
by
Marc Zyngier
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Merge branch 'kvm-arm64/misc-5.9' into kvmarm-master/next
Signed-off-by:
Marc Zyngier
<
maz@kernel.org
>
parents
236a5599
022c8328
Changes
5
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5 changed files
with
20 additions
and
18 deletions
+20
-18
arch/arm64/include/asm/kvm_emulate.h
arch/arm64/include/asm/kvm_emulate.h
+1
-1
arch/arm64/kvm/hyp/include/hyp/switch.h
arch/arm64/kvm/hyp/include/hyp/switch.h
+1
-1
arch/arm64/kvm/mmio.c
arch/arm64/kvm/mmio.c
+0
-6
arch/arm64/kvm/mmu.c
arch/arm64/kvm/mmu.c
+17
-9
include/trace/events/kvm.h
include/trace/events/kvm.h
+1
-1
No files found.
arch/arm64/include/asm/kvm_emulate.h
View file @
16314874
...
...
@@ -345,7 +345,7 @@ static __always_inline u8 kvm_vcpu_trap_get_fault_type(const struct kvm_vcpu *vc
return
kvm_vcpu_get_esr
(
vcpu
)
&
ESR_ELx_FSC_TYPE
;
}
static
__always_inline
bool
kvm_vcpu_
dabt_isextabt
(
const
struct
kvm_vcpu
*
vcpu
)
static
__always_inline
bool
kvm_vcpu_
abt_issea
(
const
struct
kvm_vcpu
*
vcpu
)
{
switch
(
kvm_vcpu_trap_get_fault
(
vcpu
))
{
case
FSC_SEA
:
...
...
arch/arm64/kvm/hyp/include/hyp/switch.h
View file @
16314874
...
...
@@ -444,7 +444,7 @@ static inline bool fixup_guest_exit(struct kvm_vcpu *vcpu, u64 *exit_code)
valid
=
kvm_vcpu_trap_get_class
(
vcpu
)
==
ESR_ELx_EC_DABT_LOW
&&
kvm_vcpu_trap_get_fault_type
(
vcpu
)
==
FSC_FAULT
&&
kvm_vcpu_dabt_isvalid
(
vcpu
)
&&
!
kvm_vcpu_
dabt_isextabt
(
vcpu
)
&&
!
kvm_vcpu_
abt_issea
(
vcpu
)
&&
!
kvm_vcpu_dabt_iss1tw
(
vcpu
);
if
(
valid
)
{
...
...
arch/arm64/kvm/mmio.c
View file @
16314874
...
...
@@ -145,12 +145,6 @@ int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
return
-
ENOSYS
;
}
/* Page table accesses IO mem: tell guest to fix its TTBR */
if
(
kvm_vcpu_dabt_iss1tw
(
vcpu
))
{
kvm_inject_dabt
(
vcpu
,
kvm_vcpu_get_hfar
(
vcpu
));
return
1
;
}
/*
* Prepare MMIO operation. First decode the syndrome data we get
* from the CPU. Then try if some in-kernel emulation feels
...
...
arch/arm64/kvm/mmu.c
View file @
16314874
...
...
@@ -2111,18 +2111,15 @@ int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run)
is_iabt
=
kvm_vcpu_trap_is_iabt
(
vcpu
);
/* Synchronous External Abort? */
if
(
kvm_vcpu_
dabt_isextabt
(
vcpu
))
{
if
(
kvm_vcpu_
abt_issea
(
vcpu
))
{
/*
* For RAS the host kernel may handle this abort.
* There is no need to pass the error into the guest.
*/
if
(
!
kvm_handle_guest_sea
(
fault_ipa
,
kvm_vcpu_get_esr
(
vcpu
)))
return
1
;
if
(
unlikely
(
!
is_iabt
))
{
if
(
kvm_handle_guest_sea
(
fault_ipa
,
kvm_vcpu_get_esr
(
vcpu
)))
kvm_inject_vabt
(
vcpu
);
return
1
;
}
return
1
;
}
trace_kvm_guest_fault
(
*
vcpu_pc
(
vcpu
),
kvm_vcpu_get_esr
(
vcpu
),
...
...
@@ -2145,12 +2142,23 @@ int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run)
hva
=
gfn_to_hva_memslot_prot
(
memslot
,
gfn
,
&
writable
);
write_fault
=
kvm_is_write_fault
(
vcpu
);
if
(
kvm_is_error_hva
(
hva
)
||
(
write_fault
&&
!
writable
))
{
/*
* The guest has put either its instructions or its page-tables
* somewhere it shouldn't have. Userspace won't be able to do
* anything about this (there's no syndrome for a start), so
* re-inject the abort back into the guest.
*/
if
(
is_iabt
)
{
/* Prefetch Abort on I/O address */
ret
=
-
ENOEXEC
;
goto
out
;
}
if
(
kvm_vcpu_dabt_iss1tw
(
vcpu
))
{
kvm_inject_dabt
(
vcpu
,
kvm_vcpu_get_hfar
(
vcpu
));
ret
=
1
;
goto
out_unlock
;
}
/*
* Check for a cache maintenance operation. Since we
* ended-up here, we know it is outside of any memory
...
...
@@ -2161,7 +2169,7 @@ int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run)
* So let's assume that the guest is just being
* cautious, and skip the instruction.
*/
if
(
kvm_vcpu_dabt_is_cm
(
vcpu
))
{
if
(
kvm_
is_error_hva
(
hva
)
&&
kvm_
vcpu_dabt_is_cm
(
vcpu
))
{
kvm_skip_instr
(
vcpu
,
kvm_vcpu_trap_il_is32bit
(
vcpu
));
ret
=
1
;
goto
out_unlock
;
...
...
include/trace/events/kvm.h
View file @
16314874
...
...
@@ -17,7 +17,7 @@
ERSN(NMI), ERSN(INTERNAL_ERROR), ERSN(OSI), ERSN(PAPR_HCALL), \
ERSN(S390_UCONTROL), ERSN(WATCHDOG), ERSN(S390_TSCH), ERSN(EPR),\
ERSN(SYSTEM_EVENT), ERSN(S390_STSI), ERSN(IOAPIC_EOI), \
ERSN(HYPERV)
ERSN(HYPERV)
, ERSN(ARM_NISV)
TRACE_EVENT
(
kvm_userspace_exit
,
TP_PROTO
(
__u32
reason
,
int
errno
),
...
...
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