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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <617f75f4eaacb02cd9d0a7044434e3e9b65e9e8b.1581767384.git.jan.kiszka@web.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200215_054449_815786_EAEF598D X-CRM114-Status: GOOD ( 18.39 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org On 15.02.20 г. 13:49 ч., Jan Kiszka wrote: > From: Jan Kiszka > > This sets a memory limit provided via mem=3D on the command line, > analogously to many other architectures. > > Signed-off-by: Jan Kiszka > =2D-- > arch/riscv/mm/init.c | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c > index 965a8cf4829c..aec39a56d6cf 100644 > =2D-- a/arch/riscv/mm/init.c > +++ b/arch/riscv/mm/init.c > @@ -118,6 +118,23 @@ static void __init setup_initrd(void) > } > #endif /* CONFIG_BLK_DEV_INITRD */ > > +static phys_addr_t memory_limit =3D PHYS_ADDR_MAX; 3d is the ascii code for =, meaning your client is somehow br0ken? > + > +/* > + * Limit the memory size that was specified via FDT. > + */ > +static int __init early_mem(char *p) > +{ > + if (!p) > + return 1; > + > + memory_limit =3D memparse(p, &p) & PAGE_MASK; ditto > + pr_notice("Memory limited to %lldMB\n", memory_limit >> 20); > + > + return 0; > +} > +early_param("mem", early_mem); > + > static phys_addr_t dtb_early_pa __initdata; > > void __init setup_bootmem(void) > @@ -127,6 +144,8 @@ void __init setup_bootmem(void) > phys_addr_t vmlinux_end =3D __pa_symbol(&_end); > phys_addr_t vmlinux_start =3D __pa_symbol(&_start); > > + memblock_enforce_memory_limit(memory_limit); > + > /* Find the memory region containing the kernel */ > for_each_memblock(memory, reg) { > phys_addr_t end =3D reg->base + reg->size; > =2D- > 2.16.4 > >