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| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2018-03-30 14:09:02 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-04-04 08:59:50 +0200 |
| commit | 7a22d6321c3da61a3778f84caa5b3a398ed019d1 (patch) | |
| tree | 458222a714f0748ed748557b18271bd832ff2af9 /arch/powerpc | |
| parent | powerpc/mm/radix: Parse disable_radix commandline correctly. (diff) | |
| download | linux-7a22d6321c3da61a3778f84caa5b3a398ed019d1.tar.xz linux-7a22d6321c3da61a3778f84caa5b3a398ed019d1.zip | |
powerpc/mm/radix: Update command line parsing for disable_radix
kernel parameter disable_radix takes different options
disable_radix=yes|no|1|0 or just disable_radix.
prom_init parsing is not supporting these options.
Fixes: 1fd6c0220710 ("powerpc/mm: Add a CONFIG option to choose if radix is used by default")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 16 | ||||
| -rw-r--r-- | arch/powerpc/kernel/prom_init_check.sh | 2 |
2 files changed, 14 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index e181fdea3da9..f9d6befb55a6 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -171,7 +171,7 @@ static unsigned long __initdata prom_tce_alloc_start; static unsigned long __initdata prom_tce_alloc_end; #endif -static bool __initdata prom_radix_disable; +static bool prom_radix_disable __initdata = !IS_ENABLED(CONFIG_PPC_RADIX_MMU_DEFAULT); struct platform_support { bool hash_mmu; @@ -641,9 +641,19 @@ static void __init early_cmdline_parse(void) opt = strstr(prom_cmd_line, "disable_radix"); if (opt) { - prom_debug("Radix disabled from cmdline\n"); - prom_radix_disable = true; + opt += 13; + if (*opt && *opt == '=') { + bool val; + + if (kstrtobool(++opt, &val)) + prom_radix_disable = false; + else + prom_radix_disable = val; + } else + prom_radix_disable = true; } + if (prom_radix_disable) + prom_debug("Radix disabled from cmdline\n"); } #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) diff --git a/arch/powerpc/kernel/prom_init_check.sh b/arch/powerpc/kernel/prom_init_check.sh index 12640f7e726b..acb6b9226352 100644 --- a/arch/powerpc/kernel/prom_init_check.sh +++ b/arch/powerpc/kernel/prom_init_check.sh @@ -19,7 +19,7 @@ WHITELIST="add_reloc_offset __bss_start __bss_stop copy_and_flush _end enter_prom memcpy memset reloc_offset __secondary_hold __secondary_hold_acknowledge __secondary_hold_spinloop __start -strcmp strcpy strlcpy strlen strncmp strstr logo_linux_clut224 +strcmp strcpy strlcpy strlen strncmp strstr kstrtobool logo_linux_clut224 reloc_got2 kernstart_addr memstart_addr linux_banner _stext __prom_init_toc_start __prom_init_toc_end btext_setup_display TOC." |