Re: [Xen-devel] [PATCH] x86/xpti: really hide almost all of Xen image

2018-03-02 Thread Jan Beulich
>>> On 02.03.18 at 13:16, wrote: > On 02/03/18 12:23, Jan Beulich wrote: >> Commit 422588e885 ("x86/xpti: Hide almost all of .text and all >> .data/.rodata/.bss mappings") carefully limited the Xen image cloning to >> just entry code, but then overwrote the just allocated and populated L3 >> entry

Re: [Xen-devel] [PATCH] x86/xpti: really hide almost all of Xen image

2018-03-02 Thread Juergen Gross
On 02/03/18 12:23, Jan Beulich wrote: > Commit 422588e885 ("x86/xpti: Hide almost all of .text and all > .data/.rodata/.bss mappings") carefully limited the Xen image cloning to > just entry code, but then overwrote the just allocated and populated L3 > entry with the normal one again covering both

[Xen-devel] [PATCH] x86/xpti: really hide almost all of Xen image

2018-03-02 Thread Jan Beulich
Commit 422588e885 ("x86/xpti: Hide almost all of .text and all .data/.rodata/.bss mappings") carefully limited the Xen image cloning to just entry code, but then overwrote the just allocated and populated L3 entry with the normal one again covering both Xen image and stubs. Drop the respective cod