Messages in this thread Patch in this message | | | From | Julien Grall <> | Subject | [PATCH RFC 05/14] arm64/mm: Remove dependency on MM in new_context | Date | Thu, 21 Mar 2019 16:36:14 +0000 |
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The function new_context will be part of a generic ASID allocator. At the moment, the MM structure is only used to fetch the ASID.
To remove the dependency on MM, it is possible to just pass a pointer to the current ASID.
Signed-off-by: Julien Grall <julien.grall@arm.com> --- arch/arm64/mm/context.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c index e98ab348b9cb..488845c39c39 100644 --- a/arch/arm64/mm/context.c +++ b/arch/arm64/mm/context.c @@ -151,10 +151,10 @@ static bool check_update_reserved_asid(struct asid_info *info, u64 asid, return hit; } -static u64 new_context(struct asid_info *info, struct mm_struct *mm) +static u64 new_context(struct asid_info *info, atomic64_t *pasid) { static u32 cur_idx = 1; - u64 asid = atomic64_read(&mm->context.id); + u64 asid = atomic64_read(pasid); u64 generation = atomic64_read(&info->generation); if (asid != 0) { @@ -236,7 +236,7 @@ void check_and_switch_context(struct mm_struct *mm, unsigned int cpu) /* Check that our ASID belongs to the current generation. */ asid = atomic64_read(&mm->context.id); if ((asid ^ atomic64_read(&info->generation)) >> info->bits) { - asid = new_context(info, mm); + asid = new_context(info, &mm->context.id); atomic64_set(&mm->context.id, asid); } -- 2.11.0
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