[PATCH 2/2] lguest update for mm: disable tsc, don't set PGE bit
Lguest guests don't use the TSC, and so we must disable it otherwise sched-clock.c barfs. Also, we no longer need to explicitly set the PGE feature bit: cpu_detect->cpuid->lguest_cpuid does that for us now that cpu_detect uses paravirt_ops (IIRC it used to do a direct cpuid from assembler). Signed-off-by: Rusty Russell <[EMAIL PROTECTED]> diff -r fd2ae7085ca2 drivers/lguest/lguest.c --- a/drivers/lguest/lguest.c Fri May 18 11:04:27 2007 +1000 +++ b/drivers/lguest/lguest.c Fri May 18 12:11:16 2007 +1000 @@ -504,10 +504,10 @@ __init void lguest_init(void *boot) reserve_top_address(lguest_data.reserve_mem); cpu_detect(_cpu_data); - /* Need this before paging_init. */ - set_bit(X86_FEATURE_PGE, new_cpu_data.x86_capability); /* Math is always hard! */ new_cpu_data.hard_math = 1; + + tsc_disable = 1; #ifdef CONFIG_X86_MCE mce_disabled = 1; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 2/2] lguest update for mm: disable tsc, don't set PGE bit
Lguest guests don't use the TSC, and so we must disable it otherwise sched-clock.c barfs. Also, we no longer need to explicitly set the PGE feature bit: cpu_detect-cpuid-lguest_cpuid does that for us now that cpu_detect uses paravirt_ops (IIRC it used to do a direct cpuid from assembler). Signed-off-by: Rusty Russell [EMAIL PROTECTED] diff -r fd2ae7085ca2 drivers/lguest/lguest.c --- a/drivers/lguest/lguest.c Fri May 18 11:04:27 2007 +1000 +++ b/drivers/lguest/lguest.c Fri May 18 12:11:16 2007 +1000 @@ -504,10 +504,10 @@ __init void lguest_init(void *boot) reserve_top_address(lguest_data.reserve_mem); cpu_detect(new_cpu_data); - /* Need this before paging_init. */ - set_bit(X86_FEATURE_PGE, new_cpu_data.x86_capability); /* Math is always hard! */ new_cpu_data.hard_math = 1; + + tsc_disable = 1; #ifdef CONFIG_X86_MCE mce_disabled = 1; - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
