diff options
| author |   Richard Henderson <rth@twiddle.net> | 2011-04-28 07:29:27 -0700 |
|---|---|---|
| committer |   Matt Turner <mattst88@gmail.com> | 2013-11-16 16:33:12 -0800 |
| commit | 994dcf7055df88623d25f3593b931a018a76b502 (patch) | |
| tree | c3708ed5b2558e82b88ef15e533797a400b361e5 /arch/alpha/kernel/setup.c | |
| parent | alpha: Eliminate compiler warning from memset macro (diff) | |
| download | wireguard-linux-994dcf7055df88623d25f3593b931a018a76b502.tar.xz wireguard-linux-994dcf7055df88623d25f3593b931a018a76b502.zip | |
alpha: Notice if we're being run under QEMU
When building a generic kernel, do a run-time check on the serial
number, like we do for MILO. When building a custom kernel, make
this a configure-time check.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'arch/alpha/kernel/setup.c')
| -rw-r--r-- | arch/alpha/kernel/setup.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c index 9e3107cc5ebb..c38d6a1b9066 100644 --- a/arch/alpha/kernel/setup.c +++ b/arch/alpha/kernel/setup.c @@ -115,10 +115,17 @@ unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; #ifdef CONFIG_ALPHA_GENERIC struct alpha_machine_vector alpha_mv; +#endif + +#ifndef alpha_using_srm int alpha_using_srm; EXPORT_SYMBOL(alpha_using_srm); #endif +#ifndef alpha_using_qemu +int alpha_using_qemu; +#endif + static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, unsigned long); static struct alpha_machine_vector *get_sysvec_byname(const char *); @@ -529,11 +536,15 @@ setup_arch(char **cmdline_p) atomic_notifier_chain_register(&panic_notifier_list, &alpha_panic_block); -#ifdef CONFIG_ALPHA_GENERIC +#ifndef alpha_using_srm /* Assume that we've booted from SRM if we haven't booted from MILO. Detect the later by looking for "MILO" in the system serial nr. */ alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0; #endif +#ifndef alpha_using_qemu + /* Similarly, look for QEMU. */ + alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0; +#endif /* If we are using SRM, we want to allow callbacks as early as possible, so do this NOW, and then |