Messages in this thread |  | | From | Sedat Dilek <> | Date | Sat, 22 Aug 2020 11:23:21 +0200 | Subject | Re: [PATCH] x86: work around clang IAS bug referencing __force_order |
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On Sat, Aug 22, 2020 at 10:42 AM Segher Boessenkool <segher@kernel.crashing.org> wrote: > > Hi Arvind, > > On Fri, Aug 21, 2020 at 11:55:52PM -0400, Arvind Sankar wrote: > > Cc Segher. > > > > Segher, we were looking at gcc PR82602, where IRA could reorder volatile > > asm's (reported on ARM). The fix was backported to gcc-6. > > I know ;-) > > > Do you know if > > there is any reason the problem couldn't occur on x86 on older gcc > > without the fix? > > No, I see no particular reason, at least GCC 5 seems vulnerable. (The > GCC 5 release branch was closed at the time this bug report was made, > already). There is no reason I see why it would work on x86 but fail > elsewhere, either. >
[1] says:
Current Minimal Requirements ... ====================== =============== ======================================== Program Minimal version Command to check the version ====================== =============== ======================================== GNU C 4.9 gcc --version
- Sedat -
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/changes.rst#n32
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