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From: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
To: <linux-arm-kernel@lists.infradead.org>,
	<kvmarm@lists.cs.columbia.edu>, <linux-kernel@vger.kernel.org>
Cc: <maz@kernel.org>, <will@kernel.org>, <catalin.marinas@arm.com>,
	<james.morse@arm.com>, <julien.thierry.kdev@gmail.com>,
	<suzuki.poulose@arm.com>, <jean-philippe@linaro.org>,
	<julien@xen.org>, <linuxarm@huawei.com>
Subject: [PATCH v4 14/16] arm64/lib: Add an helper to free memory allocated by the ASID allocator
Date: Wed, 14 Apr 2021 12:23:10 +0100	[thread overview]
Message-ID: <20210414112312.13704-15-shameerali.kolothum.thodi@huawei.com> (raw)
In-Reply-To: <20210414112312.13704-1-shameerali.kolothum.thodi@huawei.com>

From: Julien Grall <julien.grall@arm.com>

Some users of the ASID allocator (e.g VMID) may need to free any
resources if the initialization fail. So introduce a function that
allows freeing of any memory allocated by the ASID allocator.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
---
 arch/arm64/include/asm/lib_asid.h | 2 ++
 arch/arm64/lib/asid.c             | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/arch/arm64/include/asm/lib_asid.h b/arch/arm64/include/asm/lib_asid.h
index acae8d243d17..4dbc0a3f19a6 100644
--- a/arch/arm64/include/asm/lib_asid.h
+++ b/arch/arm64/include/asm/lib_asid.h
@@ -82,4 +82,6 @@ void asid_context_pinned_put(struct asid_info *info, atomic64_t *pasid,
 			     refcount_t *pinned);
 int asid_allocator_init(struct asid_info *info, u32 bits, bool pinned);
 
+void asid_allocator_free(struct asid_info *info);
+
 #endif
diff --git a/arch/arm64/lib/asid.c b/arch/arm64/lib/asid.c
index 286285616f65..7bd031f9516a 100644
--- a/arch/arm64/lib/asid.c
+++ b/arch/arm64/lib/asid.c
@@ -256,3 +256,9 @@ int asid_allocator_init(struct asid_info *info, u32 bits, bool pinned)
 
 	return 0;
 }
+
+void asid_allocator_free(struct asid_info *info)
+{
+	kfree(info->map);
+	kfree(info->pinned_map);
+}
-- 
2.17.1


  parent reply	other threads:[~2021-04-14 11:26 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-14 11:22 [PATCH v4 00/16] kvm/arm: Align the VMID allocation with the arm64 ASID one Shameer Kolothum
2021-04-14 11:22 ` [PATCH v4 01/16] arm64/mm: Introduce asid_info structure and move asid_generation/asid_map to it Shameer Kolothum
2021-04-14 11:22 ` [PATCH v4 02/16] arm64/mm: Move active_asids and reserved_asids to asid_info Shameer Kolothum
2021-04-14 11:22 ` [PATCH v4 03/16] arm64/mm: Move bits " Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 04/16] arm64/mm: Move the variable lock and tlb_flush_pending " Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 05/16] arm64/mm: Remove dependency on MM in new_context Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 06/16] arm64/mm: Introduce NUM_CTXT_ASIDS Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 07/16] arm64/mm: Move Pinned ASID related variables to asid_info Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 08/16] arm64/mm: Split asid_inits in 2 parts Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 09/16] arm64/mm: Split the function check_and_switch_context in 3 parts Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 10/16] arm64/mm: Split the arm64_mm_context_get/put Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 11/16] arm64/mm: Introduce a callback to flush the local context Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 12/16] arm64/mm: Introduce a callback to set reserved bits Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 13/16] arm64: Move the ASID allocator code in a separate file Shameer Kolothum
2021-04-14 11:23 ` Shameer Kolothum [this message]
2021-04-14 11:23 ` [PATCH v4 15/16] arch/arm64: Introduce a capability to tell whether 16-bit VMID is available Shameer Kolothum
2021-04-14 11:23 ` [PATCH v4 16/16] kvm/arm: Align the VMID allocation with the arm64 ASID one Shameer Kolothum
2021-04-22 16:08 ` [PATCH v4 00/16] " Will Deacon
2021-04-23  8:31   ` Shameerali Kolothum Thodi

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