Commit c51e97d8 authored by Will Deacon's avatar Will Deacon Committed by Catalin Marinas
Browse files

arm64: mm: remove unused cpu_set_idmap_tcr_t0sz function

With commit b08d4640

 ("arm64: remove dead code"),
cpu_set_idmap_tcr_t0sz is no longer called and can therefore be removed
from the kernel.

This patch removes the function and effectively inlines the helper
function __cpu_set_tcr_t0sz into cpu_set_default_tcr_t0sz.
Reviewed-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Acked-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 127db024
......@@ -77,34 +77,23 @@ static inline bool __cpu_uses_extended_idmap(void)
unlikely(idmap_t0sz != TCR_T0SZ(VA_BITS)));
}
static inline void __cpu_set_tcr_t0sz(u64 t0sz)
{
unsigned long tcr;
if (__cpu_uses_extended_idmap())
asm volatile (
" mrs %0, tcr_el1 ;"
" bfi %0, %1, %2, %3 ;"
" msr tcr_el1, %0 ;"
" isb"
: "=&r" (tcr)
: "r"(t0sz), "I"(TCR_T0SZ_OFFSET), "I"(TCR_TxSZ_WIDTH));
}
/*
* Set TCR.T0SZ to the value appropriate for activating the identity map.
*/
static inline void cpu_set_idmap_tcr_t0sz(void)
{
__cpu_set_tcr_t0sz(idmap_t0sz);
}
/*
* Set TCR.T0SZ to its default value (based on VA_BITS)
*/
static inline void cpu_set_default_tcr_t0sz(void)
{
__cpu_set_tcr_t0sz(TCR_T0SZ(VA_BITS));
unsigned long tcr;
if (!__cpu_uses_extended_idmap())
return;
asm volatile (
" mrs %0, tcr_el1 ;"
" bfi %0, %1, %2, %3 ;"
" msr tcr_el1, %0 ;"
" isb"
: "=&r" (tcr)
: "r"(TCR_T0SZ(VA_BITS)), "I"(TCR_T0SZ_OFFSET), "I"(TCR_TxSZ_WIDTH));
}
static inline void switch_new_context(struct mm_struct *mm)
......
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