From mboxrd@z Thu Jan 1 00:00:00 1970 From: sudeep.holla@arm.com (Sudeep Holla) Date: Fri, 20 Jan 2017 10:50:10 +0000 Subject: [PATCH 2/2] arm64: kvm: upgrade csselr and ccsidr to 64-bit values In-Reply-To: <1484909410-11673-1-git-send-email-sudeep.holla@arm.com> References: <1484909410-11673-1-git-send-email-sudeep.holla@arm.com> Message-ID: <1484909410-11673-2-git-send-email-sudeep.holla@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org csselr and ccsidr are treated as 64-bit values already elsewhere in the kernel. It also aligns well with the architecture extensions that allow 64-bit format for ccsidr. This patch upgrades the existing accesses to csselr and ccsidr from 32-bit to 64-bit in preparation to add support to those extensions. Cc: Christoffer Dall Cc: Marc Zyngier Signed-off-by: Sudeep Holla --- arch/arm64/kvm/sys_regs.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 5dca1f10340f..a3559a8a2b0c 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -58,15 +58,15 @@ */ /* 3 bits per cache level, as per CLIDR, but non-existent caches always 0 */ -static u32 cache_levels; +static u64 cache_levels; /* CSSELR values; used to index KVM_REG_ARM_DEMUX_ID_CCSIDR */ #define CSSELR_MAX ((MAX_CACHE_LEVEL - 1) >> 1) /* Which cache CCSIDR represents depends on CSSELR value. */ -static u32 get_ccsidr(u32 csselr) +static u64 get_ccsidr(u64 csselr) { - u32 ccsidr; + u64 ccsidr; /* Make sure noone else changes CSSELR during this! */ local_irq_disable(); @@ -1952,9 +1952,9 @@ static int set_invariant_sys_reg(u64 id, void __user *uaddr) return 0; } -static bool is_valid_cache(u32 val) +static bool is_valid_cache(u64 val) { - u32 level, ctype; + u64 level, ctype; if (val >= CSSELR_MAX) return false; @@ -1979,8 +1979,8 @@ static bool is_valid_cache(u32 val) static int demux_c15_get(u64 id, void __user *uaddr) { - u32 val; - u32 __user *uval = uaddr; + u64 val; + u64 __user *uval = uaddr; /* Fail if we have unknown bits set. */ if (id & ~(KVM_REG_ARCH_MASK|KVM_REG_SIZE_MASK|KVM_REG_ARM_COPROC_MASK @@ -2004,8 +2004,8 @@ static int demux_c15_get(u64 id, void __user *uaddr) static int demux_c15_set(u64 id, void __user *uaddr) { - u32 val, newval; - u32 __user *uval = uaddr; + u64 val, newval; + u64 __user *uval = uaddr; /* Fail if we have unknown bits set. */ if (id & ~(KVM_REG_ARCH_MASK|KVM_REG_SIZE_MASK|KVM_REG_ARM_COPROC_MASK -- 2.7.4