From mboxrd@z Thu Jan 1 00:00:00 1970 From: f.fainelli@gmail.com (Florian Fainelli) Date: Thu, 27 Apr 2017 11:09:45 -0700 Subject: [PATCH v2 3/3] arm64: Silence first allocation with CONFIG_ARM64_MODULE_PLTS=y In-Reply-To: References: <20170427173900.2538-1-f.fainelli@gmail.com> <20170427173900.2538-4-f.fainelli@gmail.com> Message-ID: <53d960d0-e44c-3a8d-17fd-a3895ecee858@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 04/27/2017 11:07 AM, Ard Biesheuvel wrote: > >> On 27 Apr 2017, at 18:39, Florian Fainelli wrote: >> >> When CONFIG_ARM64_MODULE_PLTS is enabled, the first allocation using the >> module space fails, because the module is too big, and then the module >> allocation is attempted from vmalloc space. Silence the first allocation >> failure in that case by setting __GFP_NOWARN. >> >> Signed-off-by: Florian Fainelli >> --- >> arch/arm64/kernel/module.c | 7 ++++++- >> 1 file changed, 6 insertions(+), 1 deletion(-) >> >> diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c >> index 7f316982ce00..58bd5cfdd544 100644 >> --- a/arch/arm64/kernel/module.c >> +++ b/arch/arm64/kernel/module.c >> @@ -32,11 +32,16 @@ >> >> void *module_alloc(unsigned long size) >> { >> + gfp_t gfp_mask = GFP_KERNEL; >> void *p; >> >> +#if IS_ENABLED(CONFIG_ARM64_MODULE_PLTS) >> + /* Silence the initial allocation */ >> + gfp_mask |= __GFP_NOWARN; >> +#endif > > Please use IS_ENABLED() instead here How do you mean? if (IS_ENABLED()) vs. #if IS_ENABLED()? > >> p = __vmalloc_node_range(size, MODULE_ALIGN, module_alloc_base, >> module_alloc_base + MODULES_VSIZE, >> - GFP_KERNEL, PAGE_KERNEL_EXEC, 0, >> + gfp_mask, PAGE_KERNEL_EXEC, 0, >> NUMA_NO_NODE, __builtin_return_address(0)); >> >> if (!p && IS_ENABLED(CONFIG_ARM64_MODULE_PLTS) && >> -- >> 2.9.3 >> > > Other than that, and with Michal's nit addressed: > > Reviewed-by: Ard Biesheuvel > -- Florian