Re: [Qemu-devel] [PATCH 3/6] Disable init of SMM.

[Fabrice Bellard]

Can you explain why you disabled SMM ? The memory it uses is only mapped
if SMI is enabled, so the OS cannot normally use it.

Regards,

Fabrice.

Gleb Natapov wrote:
> SMM initialization uses memory available for OS use.
> 
> Signed-off-by: Gleb Natapov <address@hidden>
> ---
> 
>  bios/rombios32.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>  mode change 100644 => 100755 bios/rombios32.c
> 
> diff --git a/bios/rombios32.c b/bios/rombios32.c
> old mode 100644
> new mode 100755
> index ff84f80..e887d71
> --- a/bios/rombios32.c
> +++ b/bios/rombios32.c
> @@ -38,7 +38,7 @@ typedef unsigned long long uint64_t;
>  //#define BX_USE_EBDA_TABLES
>  
>  /* define it if the (emulated) hardware supports SMM mode */
> -#define BX_USE_SMM
> +//#define BX_USE_SMM
>  
>  #define cpuid(index, eax, ebx, ecx, edx) \
>    asm volatile ("cpuid" \
> 
> 
> 
>