[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v3 07/62] arm/acpi: Add arch_acpi_os_map_memory helper function for ARM
Hi, On 23/11/15 11:37, Stefano Stabellini wrote: > On Tue, 17 Nov 2015, shannon.zhao@xxxxxxxxxx wrote: >> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx> > could you please add a couple of lines to the commit message mentioning > why __va(phys) is an acceptable implementation of arch_acpi_os_map_memory? FWIW, I already asked this question multiple time on the previous series without clear answer. __va should only be used when the memory is direct-mapped to Xen (i.e accessible directly). On ARM64, this is only the case for the RAM. Can someone confirm the ACPI will always reside to the RAM? Regards, -- Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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