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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-02-28 11:45:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-02-28 11:45:03 -0800 |
| commit | d8efcf38b13df3e9e889cf7cc214cb85dc53600c (patch) | |
| tree | b47d0f6217a2fb70d77338f2f5f2f231ee47ce62 /arch/arm | |
| parent | 78d9e93440dd6a31d6175fbecb2f2b446d821f7c (diff) | |
| parent | 1b385cbdd74aa803e966e01e5fe49490d6044e30 (diff) | |
| download | linux-d8efcf38b13df3e9e889cf7cc214cb85dc53600c.tar.bz2 | |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"Three x86 fixes and one for ARM/ARM64.
In particular, nested virtualization on Intel is broken in 3.13 and
fixed by this pull request"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm, vmx: Really fix lazy FPU on nested guest
kvm: x86: fix emulator buffer overflow (CVE-2014-0049)
arm/arm64: KVM: detect CPU reset on CPU_PM_EXIT
KVM: MMU: drop read-only large sptes when creating lower level sptes
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/kvm/arm.c | 3 | ||||
| -rw-r--r-- | arch/arm/kvm/interrupts.S | 11 |
2 files changed, 12 insertions, 2 deletions
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 1d8248ea5669..bd18bb8b2770 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -878,7 +878,8 @@ static int hyp_init_cpu_pm_notifier(struct notifier_block *self, unsigned long cmd, void *v) { - if (cmd == CPU_PM_EXIT) { + if (cmd == CPU_PM_EXIT && + __hyp_get_vectors() == hyp_default_vectors) { cpu_init_hyp_mode(NULL); return NOTIFY_OK; } diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index ddc15539bad2..0d68d4073068 100644 --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -220,6 +220,10 @@ after_vfp_restore: * in Hyp mode (see init_hyp_mode in arch/arm/kvm/arm.c). Return values are * passed in r0 and r1. * + * A function pointer with a value of 0xffffffff has a special meaning, + * and is used to implement __hyp_get_vectors in the same way as in + * arch/arm/kernel/hyp_stub.S. + * * The calling convention follows the standard AAPCS: * r0 - r3: caller save * r12: caller save @@ -363,6 +367,11 @@ hyp_hvc: host_switch_to_hyp: pop {r0, r1, r2} + /* Check for __hyp_get_vectors */ + cmp r0, #-1 + mrceq p15, 4, r0, c12, c0, 0 @ get HVBAR + beq 1f + push {lr} mrs lr, SPSR push {lr} @@ -378,7 +387,7 @@ THUMB( orr lr, #1) pop {lr} msr SPSR_csxf, lr pop {lr} - eret +1: eret guest_trap: load_vcpu @ Load VCPU pointer to r0 |