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x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 4X49z4u9GRfKePYOMv6bSyPFVg9Vs1+fxfCAsH0zFHJ5gvgZoL+rpIrqpb8i+ED8C8OV3v4fI0klH6fOe8ira+KDK1TsYnsJxZKI5+qCu+Scz43Or3PDBJMjI0UZYXid6CT65cQI0ereJl3QaE8oBYKK5lGp7Pc062DoJhRX8oM6lPjXwSuNnlq4BdDc8kDyYyyrnt6srUZ3BiKwuLFgygGFbqhZoCyLg13cH02U9/ZQ3nv6hF7iayu64TEUJl/2hj9BLyZ01oEaTzpUes+TpDGGHA0DIpf5TIQQ6B9wbYPcHdaVnIfvJekaB4rEu/zMJ4X8+DMLIB8hm5bT81nUFS38MbT/dVT7yGmfocUiRSDmugys71IpAHCKLIxssQqdjm7zXCAQMPtVkydtJ+DbeNN1hSuGORL0qkPgaUML+c8= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5e0ec97e-51d9-41a7-fe4a-08d690f28fdd X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Feb 2019 14:01:16.5492 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB6062 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch implements keepinitrd kernel parameter. By default, keepinitrd=3D0 so initrd memory will be freed by default freed but users can pass "keepinitrd=3D1" to keep the initrd memory. The keepinitrd kernel parameter is already implemented by unicore32, arm, and arm64 architectures and it is documented at: Documentation/admin-guide/kernel-parameters.txt Signed-off-by: Anup Patel --- arch/riscv/kernel/setup.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index 9cd583b6d1cd..46e547dd8245 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -97,8 +97,20 @@ static void __init setup_initrd(void) initrd_end =3D 0; } =20 -void free_initrd_mem(unsigned long start, unsigned long end) +static int keep_initrd __initdata; + +static int __init keepinitrd_setup(char *__unused) +{ + keep_initrd =3D 1; + return 1; +} + +__setup("keepinitrd", keepinitrd_setup); + +void __init free_initrd_mem(unsigned long start, unsigned long end) { + if (!keep_initrd) + memblock_free(__pa(start), end - start); } #endif /* CONFIG_BLK_DEV_INITRD */ =20 --=20 2.17.1