[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2] x86/PVH/libxl: Check whether Linux guest can handle RSDP at 4G boundary
On Mon, Apr 09, 2018 at 10:24:59AM -0400, Boris Ostrovsky wrote: > Commit 4a5733771e6f ("libxl: put RSDP for PVH guest near 4GB") breaks > pre-4.17 Linux guests since they do not use start_info's rsdp_paddr > pointer and instread scan BIOS memory for RSDP signature. > > Introduce XENFEAT_rsdp_unrestricted feature flag that indicates whether > the guest can handle RSDP at locations pointed to by rsdp_paddr. > > Since only Linux PVH guests suffer from this problem (BSD has always > relied on rsdp_paddr) we check this flag just for those guests. If the > flag is not set we place RSDP in BIOS, as before. > > Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx> LGTM: Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> Thanks! _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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