Re: Readonly GDT

2013-04-09 Thread H. Peter Anvin
On 04/09/2013 05:53 PM, Steven Rostedt wrote: > On Tue, 2013-04-09 at 17:43 -0700, H. Peter Anvin wrote: >> OK, thinking about the GDT here. >> >> The GDT is quite small -- 256 bytes on i386, 128 bytes on x86-64. As >> such, we probably don't want to allocate a full page to it for only >> that. T

Re: Readonly GDT

2013-04-09 Thread Steven Rostedt
On Tue, 2013-04-09 at 17:43 -0700, H. Peter Anvin wrote: > OK, thinking about the GDT here. > > The GDT is quite small -- 256 bytes on i386, 128 bytes on x86-64. As > such, we probably don't want to allocate a full page to it for only > that. This means that in order to create a readonly mapping