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vdso: Make it arch specific

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Currently we build vDSO handling code for all archs provided
in the source code having some "common" parts inside pie/vdso.c,
pie/vdso-stub.c, vdso-stub.c and vdso.c. This were more or
less well but in new linux kernels (starting from 3.16 presumably)
the vDSO has been significantly reworked so every architecture
must have own vDSO handling engine (just like the kernel does).

So in this patch we move vDSO code to arch specific and because
aarch64 actually doesn't implement proxification yet due to
kernel restrictions -- we drops it out. When there will be
kernel support we bring it back in proper arch/aarch64
implementation.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Cyrill Gorcunov
2014-05-26 11:50:15 +04:00
committed by Pavel Emelyanov
parent 676708e3b3
commit c473461d24
18 changed files with 385 additions and 651 deletions
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5
proc_parse.c
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@@ -401,9 +401,14 @@ int parse_smaps(pid_t pid, struct vm_area_list *vma_area_list, bool use_map_file
} else if (strstr(buf, "[vsyscall]") || strstr(buf, "[vectors]")) {
vma_area->e->status |= VMA_AREA_VSYSCALL;
} else if (strstr(buf, "[vdso]")) {
#ifdef CONFIG_VDSO
vma_area->e->status |= VMA_AREA_REGULAR;
if ((vma_area->e->prot & VDSO_PROT) == VDSO_PROT)
vma_area->e->status |= VMA_AREA_VDSO;
#else
pr_warn_once("Found vDSO area without support\n");
goto err;
#endif
} else if (strstr(buf, "[heap]")) {
vma_area->e->status |= VMA_AREA_REGULAR | VMA_AREA_HEAP;
} else {