* ARMv8: Allowing user space to perform cache-maintenance [not found] ` <SNT151-W939A3657D532DA8406405DE8410@phx.gbl> @ 2014-04-30 10:58 ` catalin.marinas at arm.com 2014-04-30 15:34 ` Rajan Srivastava 0 siblings, 1 reply; 3+ messages in thread From: catalin.marinas at arm.com @ 2014-04-30 10:58 UTC (permalink / raw) To: linux-arm-kernel On Wed, Apr 30, 2014 at 02:01:38PM +0530, Rajan Srivastava wrote: > ARMv8 allows AArch64-EL0 to execute cache maintenance instructions > (eg, by setting SCTLR_EL1.UCI). It looks like the current ARMv8 kernel > doesn't support the above feature. Where have you looked and came up to this conclusion? -- Catalin ^ permalink raw reply [flat|nested] 3+ messages in thread
* ARMv8: Allowing user space to perform cache-maintenance 2014-04-30 10:58 ` ARMv8: Allowing user space to perform cache-maintenance catalin.marinas at arm.com @ 2014-04-30 15:34 ` Rajan Srivastava 2014-04-30 15:38 ` Catalin Marinas 0 siblings, 1 reply; 3+ messages in thread From: Rajan Srivastava @ 2014-04-30 15:34 UTC (permalink / raw) To: linux-arm-kernel I am referring to ARM for ARMv8-A, "ARM DDI 0487A.a_errata_2013_Q3 (ID100313)", section D8.2.79 'System Control Register (EL1)'. Thanks, Rajan ---------------------------------------- > Date: Wed, 30 Apr 2014 11:58:20 +0100 > From: catalin.marinas at arm.com > To: rajan_srivastava at hotmail.com > CC: linaro-kernel at lists.linaro.org; linux-arm-kernel at lists.infradead.org > Subject: Re: ARMv8: Allowing user space to perform cache-maintenance > > On Wed, Apr 30, 2014 at 02:01:38PM +0530, Rajan Srivastava wrote: >> ARMv8 allows AArch64-EL0 to execute cache maintenance instructions >> (eg, by setting SCTLR_EL1.UCI). It looks like the current ARMv8 kernel >> doesn't support the above feature. > > Where have you looked and came up to this conclusion? > > -- > Catalin ^ permalink raw reply [flat|nested] 3+ messages in thread
* ARMv8: Allowing user space to perform cache-maintenance 2014-04-30 15:34 ` Rajan Srivastava @ 2014-04-30 15:38 ` Catalin Marinas 0 siblings, 0 replies; 3+ messages in thread From: Catalin Marinas @ 2014-04-30 15:38 UTC (permalink / raw) To: linux-arm-kernel On Wed, Apr 30, 2014 at 04:34:29PM +0100, Rajan Srivastava wrote: > I am referring to ARM for ARMv8-A, "ARM DDI 0487A.a_errata_2013_Q3 > (ID100313)", section D8.2.79 'System Control Register (EL1)'. I meant which kernel version have you looked at? -- Catalin ^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] ` <SNT151-W939A3657D532DA8406405DE8410@phx.gbl>
2014-04-30 10:58 ` ARMv8: Allowing user space to perform cache-maintenance catalin.marinas at arm.com
2014-04-30 15:34 ` Rajan Srivastava
2014-04-30 15:38 ` Catalin Marinas
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