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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-04-30 15:38:58 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-05-02 18:20:27 +0300 |
| commit | f97dec21a306967edbc49ce46f3ecefa3cd16907 (patch) | |
| tree | 71926e433d43add06480dcdd7acbd4f1e4bc6473 /arch/powerpc/kernel/head_32.h | |
| parent | ef4291243f51d0a69899ee2025de09578c0fcba8 (diff) | |
| download | linux-f97dec21a306967edbc49ce46f3ecefa3cd16907.tar.xz | |
powerpc/32: enter syscall with MSR_EE inconditionaly set
syscalls are expected to be entered with MSR_EE set. Lets
make it inconditional by forcing MSR_EE on syscalls.
This patch adds EXC_XFER_SYS for that.
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[splited out from benh RFC patch]
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/head_32.h')
| -rw-r--r-- | arch/powerpc/kernel/head_32.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h index aa0131bb09b5..7221418a883f 100644 --- a/arch/powerpc/kernel/head_32.h +++ b/arch/powerpc/kernel/head_32.h @@ -123,6 +123,10 @@ label: EXC_XFER_TEMPLATE(hdlr, n+1, MSR_KERNEL, NOCOPY, transfer_to_handler, \ ret_from_except) +#define EXC_XFER_SYS(n, hdlr) \ + EXC_XFER_TEMPLATE(hdlr, n+1, MSR_KERNEL | MSR_EE, NOCOPY, transfer_to_handler, \ + ret_from_except) + #define EXC_XFER_EE(n, hdlr) \ EXC_XFER_TEMPLATE(hdlr, n, MSR_KERNEL, COPY_EE, transfer_to_handler_full, \ ret_from_except_full) |