mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-28 20:02:17 +00:00
arm64: KVM: Set cpsr before spsr on fault injection
We need to set cpsr before determining the spsr bank, as the bank depends on the target exception level of the injection, not the current mode of the vcpu. Normally this is one in the same (EL1), but not when we manage to trap an EL0 fault. It still doesn't really matter for the 64-bit EL0 case though, as vcpu_spsr() unconditionally uses the EL1 bank for that. However the 32-bit EL0 case gets fun, as that path will lead to the BUG() in vcpu_spsr32(). This patch fixes the assignment order and also modifies some white space in order to better group pairs of lines that have strict order. Cc: stable@vger.kernel.org # v4.5 Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
parent
3f312db6b6
commit
89581f06b2
1 changed files with 5 additions and 7 deletions
|
@ -132,16 +132,14 @@ static u64 get_except_vector(struct kvm_vcpu *vcpu, enum exception_type type)
|
|||
static void inject_abt64(struct kvm_vcpu *vcpu, bool is_iabt, unsigned long addr)
|
||||
{
|
||||
unsigned long cpsr = *vcpu_cpsr(vcpu);
|
||||
bool is_aarch32;
|
||||
bool is_aarch32 = vcpu_mode_is_32bit(vcpu);
|
||||
u32 esr = 0;
|
||||
|
||||
is_aarch32 = vcpu_mode_is_32bit(vcpu);
|
||||
|
||||
*vcpu_spsr(vcpu) = cpsr;
|
||||
*vcpu_elr_el1(vcpu) = *vcpu_pc(vcpu);
|
||||
|
||||
*vcpu_pc(vcpu) = get_except_vector(vcpu, except_type_sync);
|
||||
|
||||
*vcpu_cpsr(vcpu) = PSTATE_FAULT_BITS_64;
|
||||
*vcpu_spsr(vcpu) = cpsr;
|
||||
|
||||
vcpu_sys_reg(vcpu, FAR_EL1) = addr;
|
||||
|
||||
|
@ -172,11 +170,11 @@ static void inject_undef64(struct kvm_vcpu *vcpu)
|
|||
unsigned long cpsr = *vcpu_cpsr(vcpu);
|
||||
u32 esr = (ESR_ELx_EC_UNKNOWN << ESR_ELx_EC_SHIFT);
|
||||
|
||||
*vcpu_spsr(vcpu) = cpsr;
|
||||
*vcpu_elr_el1(vcpu) = *vcpu_pc(vcpu);
|
||||
|
||||
*vcpu_pc(vcpu) = get_except_vector(vcpu, except_type_sync);
|
||||
|
||||
*vcpu_cpsr(vcpu) = PSTATE_FAULT_BITS_64;
|
||||
*vcpu_spsr(vcpu) = cpsr;
|
||||
|
||||
/*
|
||||
* Build an unknown exception, depending on the instruction
|
||||
|
|
Loading…
Reference in a new issue