[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v4 18/19] xen/arm: Prevent slipping hypervisor SError to guest
Hi Wei, On 05/04/17 10:09, Wei Chen wrote: If there is a pending SError while we're returning from trap. If the SError handle option is "DIVERSE", we have to prevent slipping this hypervisor SError to guest. So we have to use the dsb/isb to guarantee that the pending hypervisor SError would be caught in hypervisor before return to guest. In previous patch, we will set SKIP_SYNCHRONIZE_SERROR_ENTRY_EXIT to cpu_hwcaps when option is NOT "DIVERSE". This means we can use the alternative to skip synchronizing SErrors for other SErrors handle options. Because we have umasked the Abort/SError bit in previous patch. We have to disable the Abort/SError before returning to guest as we have done for IRQ. Signed-off-by: Wei Chen <Wei.Chen@xxxxxxx> Reviewed-by: Julien Grall <julien.grall@xxxxxxx> Cheers, -- Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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