On Fri, Sep 06, 2024 at 12:19:09PM +0200, Borislav Petkov wrote:
> Right, I was talking to Michael about it yesterday, CCed.
>
> He suggested that you might be better off creating these annotations by
> sticking the required info in a section instead of generating symbols.
>
> I.e.,
>
> .pushsec
On Wed, Sep 04, 2024 at 09:44:29AM -0700, Josh Poimboeuf wrote:
> Not that I know of, since the compiler usually doesn't have visibility
> to these sections.
>
> It might be possible to specify "entsize" in the .pushsection flags,
> which is an ELF section header attribute which objtool could read
On Wed, Sep 04, 2024 at 02:39:18PM +0200, Borislav Petkov wrote:
> On Tue, Sep 03, 2024 at 09:28:29PM -0700, Josh Poimboeuf wrote:
> > Take a more generic approach: for the "array of structs" style sections,
> > annotate each struct entry with a symbol containing the entry. This
> > makes it easy
On Wed, Sep 04, 2024 at 10:08:42AM +0200, Peter Zijlstra wrote:
> On Tue, Sep 03, 2024 at 09:28:29PM -0700, Josh Poimboeuf wrote:
> > Take a more generic approach: for the "array of structs" style sections,
> > annotate each struct entry with a symbol containing the entry. This
> > makes it easy f
On Tue, Sep 03, 2024 at 09:28:29PM -0700, Josh Poimboeuf wrote:
> Take a more generic approach: for the "array of structs" style sections,
> annotate each struct entry with a symbol containing the entry. This
> makes it easy for tooling to parse the data and avoids the fragility of
> hardcoding se
On Tue, Sep 03, 2024 at 09:28:29PM -0700, Josh Poimboeuf wrote:
> On Tue, Sep 03, 2024 at 10:29:09AM +0200, Peter Zijlstra wrote:
> > On Mon, Sep 02, 2024 at 09:00:11PM -0700, Josh Poimboeuf wrote:
> > > Create a symbol for each special section entry. This helps objtool
> > > extract needed entrie
On Tue, Sep 03, 2024 at 10:29:09AM +0200, Peter Zijlstra wrote:
> On Mon, Sep 02, 2024 at 09:00:11PM -0700, Josh Poimboeuf wrote:
> > Create a symbol for each special section entry. This helps objtool
> > extract needed entries.
>
> A little more explanation would be nice,..
Indeed!
From: Josh
On Mon, Sep 02, 2024 at 09:00:11PM -0700, Josh Poimboeuf wrote:
> Create a symbol for each special section entry. This helps objtool
> extract needed entries.
A little more explanation would be nice,..
Create a symbol for each special section entry. This helps objtool
extract needed entries.
Signed-off-by: Josh Poimboeuf
---
arch/x86/include/asm/alternative.h | 50 --
arch/x86/include/asm/asm.h | 24 +-
arch/x86/include/asm/bug.h | 2 ++
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