From mboxrd@z Thu Jan 1 00:00:00 1970 From: nm@ti.com (Nishanth Menon) Date: Wed, 13 Jun 2018 08:32:15 -0500 Subject: [PATCH 2/4] ARM: Introduce ability to enable invalidate of BTB with ICIALLU on Cortex-A15 for CVE-2017-5715 In-Reply-To: <8fac2f1c-ecc4-1aa1-0620-8ac6e2efdbf1@gmail.com> References: <20180612202411.29798-1-nm@ti.com> <20180612202411.29798-3-nm@ti.com> <8fac2f1c-ecc4-1aa1-0620-8ac6e2efdbf1@gmail.com> Message-ID: <20180613133215.2cv7iyjb2laaha3j@kahuna> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 23:05-20180612, Marek Vasut wrote: > On 06/12/2018 10:24 PM, Nishanth Menon wrote: [..] > > +#ifdef CONFIG_ARM_CORTEX_A15_CVE_2017_5715 > > + mrc p15, 0, r0, c1, c0, 1 @ read auxilary control register > > + orr r0, r0, #1 << 0 @ Enable invalidates of BTB > > Can we use BIT() macro in the assembler code too ? Probably, but just following convention in the rest of the file. Do we want to change from existing code? -- Regards, Nishanth Menon