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| author | Sam Bobroff <sam.bobroff@au1.ibm.com> | 2017-09-26 08:47:04 +0200 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2017-10-03 17:58:16 +0200 |
| commit | 2fb1e946450a4fef74bb72f360555f7760d816f0 (patch) | |
| tree | a2cd3794460739e885ca9456c2e3c81f3213a357 /arch/powerpc/kvm/book3s_xive.h | |
| parent | Linux 4.14-rc3 (diff) | |
| download | linux-2fb1e946450a4fef74bb72f360555f7760d816f0.tar.xz linux-2fb1e946450a4fef74bb72f360555f7760d816f0.zip | |
KVM: PPC: Book3S: Fix server always zero from kvmppc_xive_get_xive()
In KVM's XICS-on-XIVE emulation, kvmppc_xive_get_xive() returns the
value of state->guest_server as "server". However, this value is not
set by it's counterpart kvmppc_xive_set_xive(). When the guest uses
this interface to migrate interrupts away from a CPU that is going
offline, it sees all interrupts as belonging to CPU 0, so they are
left assigned to (now) offline CPUs.
This patch removes the guest_server field from the state, and returns
act_server in it's place (that is, the CPU actually handling the
interrupt, which may differ from the one requested).
Fixes: 5af50993850a ("KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller")
Cc: stable@vger.kernel.org
Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm/book3s_xive.h')
| -rw-r--r-- | arch/powerpc/kvm/book3s_xive.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_xive.h b/arch/powerpc/kvm/book3s_xive.h index 5938f7644dc1..6ba63f8e8a61 100644 --- a/arch/powerpc/kvm/book3s_xive.h +++ b/arch/powerpc/kvm/book3s_xive.h @@ -35,7 +35,6 @@ struct kvmppc_xive_irq_state { struct xive_irq_data *pt_data; /* XIVE Pass-through associated data */ /* Targetting as set by guest */ - u32 guest_server; /* Current guest selected target */ u8 guest_priority; /* Guest set priority */ u8 saved_priority; /* Saved priority when masking */ |