diff options
| author |   Cédric Le Goater <clg@kaod.org> | 2021-12-01 17:54:18 +0100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-12-02 10:40:38 +1100 |
| commit | 2a2ac8a7018b953cd23d770ebd28f8e1ea365df4 (patch) | |
| tree | 00ebb55bd093c5a4f247d74bfa16dbd4ab1ea192 /arch/powerpc/sysdev | |
| parent | powerpc/signal32: Use struct_group() to zero spe regs (diff) | |
| download | linux-dev-2a2ac8a7018b953cd23d770ebd28f8e1ea365df4.tar.xz linux-dev-2a2ac8a7018b953cd23d770ebd28f8e1ea365df4.zip | |
powerpc/xive: Fix compile when !CONFIG_PPC_POWERNV.
The automatic "save & restore" of interrupt context is a POWER10/XIVE2
feature exploited by KVM under the PowerNV platform. It is not
available under pSeries and the associated toggle should not be
exposed under the XIVE debugfs directory.
Introduce a platform handler for debugfs initialization and move the
'save-restore' entry under the native (PowerNV) backend to fix compile
when !CONFIG_PPC_POWERNV.
Fixes: 1e7684dc4fc7 ("powerpc/xive: Add a debugfs toggle for save-restore")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211201165418.1041842-1-clg@kaod.org
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/xive/common.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/xive/native.c | 11 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/xive/xive-internal.h | 1 |
3 files changed, 15 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index 43f7f7df6407..1ca5564bda9d 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -1847,7 +1847,9 @@ static void xive_core_debugfs_create(void) &xive_eq_debug_fops); } debugfs_create_bool("store-eoi", 0600, xive_dir, &xive_store_eoi); - debugfs_create_bool("save-restore", 0600, xive_dir, &xive_has_save_restore); + + if (xive_ops->debug_create) + xive_ops->debug_create(xive_dir); } #else static inline void xive_core_debugfs_create(void) { } diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c index d6a091dc1bce..d4243dab230e 100644 --- a/arch/powerpc/sysdev/xive/native.c +++ b/arch/powerpc/sysdev/xive/native.c @@ -461,6 +461,14 @@ void xive_native_sync_queue(u32 hw_irq) } EXPORT_SYMBOL_GPL(xive_native_sync_queue); +#ifdef CONFIG_DEBUG_FS +static int xive_native_debug_create(struct dentry *xive_dir) +{ + debugfs_create_bool("save-restore", 0600, xive_dir, &xive_has_save_restore); + return 0; +} +#endif + static const struct xive_ops xive_native_ops = { .populate_irq_data = xive_native_populate_irq_data, .configure_irq = xive_native_configure_irq, @@ -478,6 +486,9 @@ static const struct xive_ops xive_native_ops = { .get_ipi = xive_native_get_ipi, .put_ipi = xive_native_put_ipi, #endif /* CONFIG_SMP */ +#ifdef CONFIG_DEBUG_FS + .debug_create = xive_native_debug_create, +#endif /* CONFIG_DEBUG_FS */ .name = "native", }; diff --git a/arch/powerpc/sysdev/xive/xive-internal.h b/arch/powerpc/sysdev/xive/xive-internal.h index e0941bc64430..fe6d95d54af9 100644 --- a/arch/powerpc/sysdev/xive/xive-internal.h +++ b/arch/powerpc/sysdev/xive/xive-internal.h @@ -58,6 +58,7 @@ struct xive_ops { void (*put_ipi)(unsigned int cpu, struct xive_cpu *xc); #endif int (*debug_show)(struct seq_file *m, void *private); + int (*debug_create)(struct dentry *xive_dir); const char *name; }; |