Re: [PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is above 512G

2012-12-18 Thread Yinghai Lu
On Sun, Dec 16, 2012 at 9:49 AM, Borislav Petkov wrote: > On Thu, Dec 13, 2012 at 02:01:59PM -0800, Yinghai Lu wrote: >> After following patch: >> x86, 64bit: Set extra ident mapping for whole kernel range >> >> We have extra ident mapping for kernel that is loaded above 1G. > > What? > >

Re: [PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is above 512G

2012-12-18 Thread Yinghai Lu
On Sun, Dec 16, 2012 at 9:49 AM, Borislav Petkov b...@alien8.de wrote: On Thu, Dec 13, 2012 at 02:01:59PM -0800, Yinghai Lu wrote: After following patch: x86, 64bit: Set extra ident mapping for whole kernel range We have extra ident mapping for kernel that is loaded above 1G. What?

Re: [PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is above 512G

2012-12-16 Thread Yinghai Lu
On Sun, Dec 16, 2012 at 9:49 AM, Borislav Petkov wrote: > On Thu, Dec 13, 2012 at 02:01:59PM -0800, Yinghai Lu wrote: >> After following patch: >> x86, 64bit: Set extra ident mapping for whole kernel range >> >> We have extra ident mapping for kernel that is loaded above 1G. > > What? > >

Re: [PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is above 512G

2012-12-16 Thread Borislav Petkov
On Thu, Dec 13, 2012 at 02:01:59PM -0800, Yinghai Lu wrote: > After following patch: > x86, 64bit: Set extra ident mapping for whole kernel range > > We have extra ident mapping for kernel that is loaded above 1G. What? /me looks at next patch Aaah, the *next* patch adds an extra ident

Re: [PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is above 512G

2012-12-16 Thread Borislav Petkov
On Thu, Dec 13, 2012 at 02:01:59PM -0800, Yinghai Lu wrote: After following patch: x86, 64bit: Set extra ident mapping for whole kernel range We have extra ident mapping for kernel that is loaded above 1G. What? /me looks at next patch Aaah, the *next* patch adds an extra ident

Re: [PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is above 512G

2012-12-16 Thread Yinghai Lu
On Sun, Dec 16, 2012 at 9:49 AM, Borislav Petkov b...@alien8.de wrote: On Thu, Dec 13, 2012 at 02:01:59PM -0800, Yinghai Lu wrote: After following patch: x86, 64bit: Set extra ident mapping for whole kernel range We have extra ident mapping for kernel that is loaded above 1G. What?

[PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is above 512G

2012-12-13 Thread Yinghai Lu
After following patch: x86, 64bit: Set extra ident mapping for whole kernel range We have extra ident mapping for kernel that is loaded above 1G. So need to clear extra pgd entry when kernel is loaded above 512g. Signed-off-by: Yinghai Lu --- arch/x86/kernel/head64.c | 10 ++

[PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is above 512G

2012-12-13 Thread Yinghai Lu
After following patch: x86, 64bit: Set extra ident mapping for whole kernel range We have extra ident mapping for kernel that is loaded above 1G. So need to clear extra pgd entry when kernel is loaded above 512g. Signed-off-by: Yinghai Lu ying...@kernel.org --- arch/x86/kernel/head64.c