Commit 8d68f67b authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

Merge tag 'kvm-arm-for-v3.17-rc3' of... 

Merge tag 'kvm-arm-for-v3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

These fixes fix two issues in KVM for arm/arm64:
 - hyp mode initialization issues on certian boards/bootloader combos.
 - incorrect return address from trapped WFI/WFE instrucitons, which
   breaks non-linux guests.
parents 0ac625df 05e0127f

arch/arm/kvm/handle_exit.c

+2 −0
Original line number Diff line number Diff line
@@ -93,6 +93,8 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run) 
	else

		kvm_vcpu_block(vcpu);



	kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));



	return 1;

}

arch/arm/kvm/init.S

+4 −0
Original line number Diff line number Diff line
@@ -99,6 +99,10 @@ __do_hyp_init: 
	mrc	p15, 0, r0, c10, c2, 1

	mcr	p15, 4, r0, c10, c2, 1



	@ Invalidate the stale TLBs from Bootloader

	mcr	p15, 4, r0, c8, c7, 0	@ TLBIALLH

	dsb	ish



	@ Set the HSCTLR to:

	@  - ARM/THUMB exceptions: Kernel config (Thumb-2 kernel)

	@  - Endianness: Kernel config

arch/arm64/kvm/handle_exit.c

+2 −0
Original line number Diff line number Diff line
@@ -66,6 +66,8 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run) 
	else

		kvm_vcpu_block(vcpu);



	kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));



	return 1;

}

arch/arm64/kvm/hyp-init.S

+4 −0
Original line number Diff line number Diff line
@@ -80,6 +80,10 @@ __do_hyp_init: 
	msr	mair_el2, x4

	isb



	/* Invalidate the stale TLBs from Bootloader */

	tlbi	alle2

	dsb	sy



	mrs	x4, sctlr_el2

	and	x4, x4, #SCTLR_EL2_EE	// preserve endianness of EL2

	ldr	x5, =SCTLR_EL2_FLAGS

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