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Message-Id: <20151018014730.493733167@linuxfoundation.org> Date: Sat, 17 Oct 2015 18:55:24 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, "Gautham R. Shenoy" <ego@...ux.vnet.ibm.com>, Paul Mackerras <paulus@...ba.org> Subject: [PATCH 4.2 011/258] KVM: PPC: Book3S HV: Pass the correct trap argument to kvmhv_commence_exit 4.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: "Gautham R. Shenoy" <ego@...ux.vnet.ibm.com> commit 7e022e717f54897e396504306d0c9b61452adf4e upstream. In guest_exit_cont we call kvmhv_commence_exit which expects the trap number as the argument. However r3 doesn't contain the trap number at this point and as a result we would be calling the function with a spurious trap number. Fix this by copying r12 into r3 before calling kvmhv_commence_exit as r12 contains the trap number. Fixes: eddb60fb1443 Signed-off-by: Gautham R. Shenoy <ego@...ux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@...ba.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 1 + 1 file changed, 1 insertion(+) --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -1171,6 +1171,7 @@ mc_cont: bl kvmhv_accumulate_time #endif + mr r3, r12 /* Increment exit count, poke other threads to exit */ bl kvmhv_commence_exit nop -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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