diff options
| author | Dave Martin | 2017-03-23 16:14:39 +0100 |
|---|---|---|
| committer | Catalin Marinas | 2017-04-04 17:55:41 +0200 |
| commit | 46823dd17c676d1e1830774e93be813dc3638d6c (patch) | |
| tree | f4fdf8703dd65bef8d594cb9f795439d2627888e /arch/arm64/kvm/sys_regs.c | |
| parent | arm64: drop unnecessary newlines in show_regs() (diff) | |
| download | kernel-qcow2-linux-46823dd17c676d1e1830774e93be813dc3638d6c.tar.gz kernel-qcow2-linux-46823dd17c676d1e1830774e93be813dc3638d6c.tar.xz kernel-qcow2-linux-46823dd17c676d1e1830774e93be813dc3638d6c.zip | |
arm64: cpufeature: Make ID reg accessor naming less counterintuitive
read_system_reg() can readily be confused with read_sysreg(),
whereas these are really quite different in their meaning.
This patches attempts to reduce the ambiguity be reserving "sysreg"
for the actual system register accessors.
read_system_reg() is instead renamed to read_sanitised_ftr_reg(),
to make it more obvious that the Linux-defined sanitised feature
register cache is being accessed here, not the underlying
architectural system registers.
cpufeature.c's internal __raw_read_system_reg() function is renamed
in line with its actual purpose: a form of read_sysreg() that
indexes on (non-compiletime-constant) encoding rather than symbolic
register name.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kvm/sys_regs.c')
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 0e26f8c2b56f..26b0e77878b5 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1183,8 +1183,8 @@ static bool trap_dbgidr(struct kvm_vcpu *vcpu, if (p->is_write) { return ignore_write(vcpu, p); } else { - u64 dfr = read_system_reg(SYS_ID_AA64DFR0_EL1); - u64 pfr = read_system_reg(SYS_ID_AA64PFR0_EL1); + u64 dfr = read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1); + u64 pfr = read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1); u32 el3 = !!cpuid_feature_extract_unsigned_field(pfr, ID_AA64PFR0_EL3_SHIFT); p->regval = ((((dfr >> ID_AA64DFR0_WRPS_SHIFT) & 0xf) << 28) | |