[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 3/4] arm: traps: handle unknown exceptions in check_conditional_instr()
According to ARM architecture reference manual, exception with unknown reason (HSR.EC == 0) have no valid bits in HSR (apart from HSR.EC), so we can't check if that was caused by conditional instruction. We need assume that it is uncoditional. Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx> --- xen/arch/arm/traps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c index c07999b..eae2212 100644 --- a/xen/arch/arm/traps.c +++ b/xen/arch/arm/traps.c @@ -1717,7 +1717,7 @@ static int check_conditional_instr(struct cpu_user_regs *regs, int cond; /* Unconditional Exception classes */ - if ( hsr.ec >= 0x10 ) + if ( hsr.ec == HSR_EC_UNKNOWN || hsr.ec >= 0x10 ) return 1; /* Check for valid condition in hsr */ -- 2.7.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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