aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel/traps.c
diff options
context:
space:
mode:
authorIngo Molnar <mingo@kernel.org>2013-08-14 12:14:12 +0200
committerIngo Molnar <mingo@kernel.org>2013-08-14 12:14:12 +0200
commit397f09977ea350a20f20b415a9313cc790137742 (patch)
tree0e44f2f3e5804bd5c0c6f644785006b7225e3c94 /arch/powerpc/kernel/traps.c
parent6356bb0ad6525dae93c06478a098ed3848e9ab01 (diff)
parenta4b4bedce880046feeb5b206392960f395ed02ad (diff)
downloadkernel_goldelico_gta04-397f09977ea350a20f20b415a9313cc790137742.zip
kernel_goldelico_gta04-397f09977ea350a20f20b415a9313cc790137742.tar.gz
kernel_goldelico_gta04-397f09977ea350a20f20b415a9313cc790137742.tar.bz2
Merge tag 'amd_f15_m30' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/ras
Pull AMD F15h, model 0x30 and later enablement stuff, more specifically EDAC support, from Borislav Petkov. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/powerpc/kernel/traps.c')
-rw-r--r--arch/powerpc/kernel/traps.c58
1 files changed, 34 insertions, 24 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index bf33c22..e435bc0 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -44,9 +44,7 @@
#include <asm/machdep.h>
#include <asm/rtas.h>
#include <asm/pmc.h>
-#ifdef CONFIG_PPC32
#include <asm/reg.h>
-#endif
#ifdef CONFIG_PMAC_BACKLIGHT
#include <asm/backlight.h>
#endif
@@ -1296,43 +1294,54 @@ void vsx_unavailable_exception(struct pt_regs *regs)
die("Unrecoverable VSX Unavailable Exception", regs, SIGABRT);
}
+#ifdef CONFIG_PPC64
void facility_unavailable_exception(struct pt_regs *regs)
{
static char *facility_strings[] = {
- "FPU",
- "VMX/VSX",
- "DSCR",
- "PMU SPRs",
- "BHRB",
- "TM",
- "AT",
- "EBB",
- "TAR",
+ [FSCR_FP_LG] = "FPU",
+ [FSCR_VECVSX_LG] = "VMX/VSX",
+ [FSCR_DSCR_LG] = "DSCR",
+ [FSCR_PM_LG] = "PMU SPRs",
+ [FSCR_BHRB_LG] = "BHRB",
+ [FSCR_TM_LG] = "TM",
+ [FSCR_EBB_LG] = "EBB",
+ [FSCR_TAR_LG] = "TAR",
};
- char *facility, *prefix;
+ char *facility = "unknown";
u64 value;
+ u8 status;
+ bool hv;
- if (regs->trap == 0xf60) {
- value = mfspr(SPRN_FSCR);
- prefix = "";
- } else {
+ hv = (regs->trap == 0xf80);
+ if (hv)
value = mfspr(SPRN_HFSCR);
- prefix = "Hypervisor ";
+ else
+ value = mfspr(SPRN_FSCR);
+
+ status = value >> 56;
+ if (status == FSCR_DSCR_LG) {
+ /* User is acessing the DSCR. Set the inherit bit and allow
+ * the user to set it directly in future by setting via the
+ * H/FSCR DSCR bit.
+ */
+ current->thread.dscr_inherit = 1;
+ if (hv)
+ mtspr(SPRN_HFSCR, value | HFSCR_DSCR);
+ else
+ mtspr(SPRN_FSCR, value | FSCR_DSCR);
+ return;
}
- value = value >> 56;
+ if ((status < ARRAY_SIZE(facility_strings)) &&
+ facility_strings[status])
+ facility = facility_strings[status];
/* We restore the interrupt state now */
if (!arch_irq_disabled_regs(regs))
local_irq_enable();
- if (value < ARRAY_SIZE(facility_strings))
- facility = facility_strings[value];
- else
- facility = "unknown";
-
pr_err("%sFacility '%s' unavailable, exception at 0x%lx, MSR=%lx\n",
- prefix, facility, regs->nip, regs->msr);
+ hv ? "Hypervisor " : "", facility, regs->nip, regs->msr);
if (user_mode(regs)) {
_exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
@@ -1341,6 +1350,7 @@ void facility_unavailable_exception(struct pt_regs *regs)
die("Unexpected facility unavailable exception", regs, SIGABRT);
}
+#endif
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM