Hi Julien, > On 3 May 2022, at 19:17, Julien Grall <jul...@xen.org> wrote: > > Hi Bertrand, > > On 03/05/2022 10:38, Bertrand Marquis wrote: >> SMCC_WORKAROUND_3 is handling both Spectre v2 and spectre BHB. >> So when a guest is asking if we support workaround 1, tell yes if we >> apply workaround 3 on exception entry as it handles it. >> This will allow guests not supporting Spectre BHB but impacted by >> spectre v2 to still handle it correctly. >> The modified behaviour is coherent with what the Linux kernel does in >> KVM for guests. >> While there use ARM_SMCCC_SUCCESS instead of 0 for the return code value >> for workaround detection to be coherent with Workaround 2 handling. >> Signed-off-by: Bertrand Marquis <bertrand.marq...@arm.com> > > Acked-by: Julien Grall <jgr...@amazon.com>
Thanks > > I think we should also consider for backport. Agree. Cheers Bertrand > > Cheers, > > -- > Julien Grall
