lkml.org 
[lkml]   [2015]   [Jul]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH 03/10] arm64: Delay ELF HWCAP initialisation until all CPUs are up
Date
From: "Suzuki K. Poulose" <suzuki.poulose@arm.com>

Delay the ELF HWCAP initialisation untill all the CPUs are up.
This is in preparation for detecting the common features across
the CPUS and creating a consistent ELF HWCAP for the system.

Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
---
arch/arm64/kernel/setup.c | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index a30cf1d..2a36d27 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -103,6 +103,8 @@ static struct resource mem_res[] = {
}
};

+static void setup_processor_features(void);
+
#define kernel_code mem_res[0]
#define kernel_data mem_res[1]

@@ -212,6 +214,7 @@ static void __init hyp_mode_check(void)

void __init do_post_cpus_up_work(void)
{
+ setup_processor_features();
hyp_mode_check();
apply_alternatives_all();
}
@@ -223,19 +226,12 @@ void __init up_late_init(void)
}
#endif /* CONFIG_UP_LATE_INIT */

-static void __init setup_processor(void)
+static void __init setup_processor_features(void)
{
u64 features, block;
u32 cwg;
int cls;

- pr_info("Boot CPU: AArch64 Processor [%08x]\n", read_cpuid_id());
-
- sprintf(init_utsname()->machine, ELF_PLATFORM);
- elf_hwcap = 0;
-
- cpuinfo_store_boot_cpu();
-
/*
* Check for sane CTR_EL0.CWG value.
*/
@@ -312,6 +308,13 @@ static void __init setup_processor(void)
#endif
}

+static void __init setup_processor(void)
+{
+ pr_info("Boot CPU: AArch64 Processor [%08x]\n", read_cpuid_id());
+ sprintf(init_utsname()->machine, ELF_PLATFORM);
+ cpuinfo_store_boot_cpu();
+}
+
static void __init setup_machine_fdt(phys_addr_t dt_phys)
{
void *dt_virt = fixmap_remap_fdt(dt_phys);
--
1.7.9.5


\
 
 \ /
  Last update: 2015-07-24 12:01    [W:0.118 / U:0.148 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site