treewide: refresh kmalloc_obj() conversionsgrafted

This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci

This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.

Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.

Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>

1 files changed, 83 insertions, 0 deletions

diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
new file mode 100644
index 000000000..ba2f17e64
--- /dev/null
+++ b/arch/x86/xen/suspend.c
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/types.h>
+#include <linux/tick.h>
+#include <linux/percpu-defs.h>
+
+#include <xen/xen.h>
+#include <xen/interface/xen.h>
+#include <xen/grant_table.h>
+#include <xen/events.h>
+
+#include <asm/cpufeatures.h>
+#include <asm/msr-index.h>
+#include <asm/xen/hypercall.h>
+#include <asm/xen/page.h>
+#include <asm/fixmap.h>
+#include <asm/msr.h>
+
+#include "xen-ops.h"
+
+static DEFINE_PER_CPU(u64, spec_ctrl);
+
+void xen_arch_pre_suspend(void)
+{
+	xen_save_time_memory_area();
+
+	if (xen_pv_domain())
+		xen_pv_pre_suspend();
+}
+
+void xen_arch_post_suspend(int cancelled)
+{
+	if (xen_pv_domain())
+		xen_pv_post_suspend(cancelled);
+	else
+		xen_hvm_post_suspend(cancelled);
+
+	xen_restore_time_memory_area();
+}
+
+static void xen_vcpu_notify_restore(void *data)
+{
+	if (xen_pv_domain() && boot_cpu_has(X86_FEATURE_SPEC_CTRL))
+		wrmsrq(MSR_IA32_SPEC_CTRL, this_cpu_read(spec_ctrl));
+
+	/* Boot processor notified via generic timekeeping_resume() */
+	if (smp_processor_id() == 0)
+		return;
+
+	tick_resume_local();
+}
+
+static void xen_vcpu_notify_suspend(void *data)
+{
+	u64 tmp;
+
+	tick_suspend_local();
+
+	if (xen_pv_domain() && boot_cpu_has(X86_FEATURE_SPEC_CTRL)) {
+		rdmsrq(MSR_IA32_SPEC_CTRL, tmp);
+		this_cpu_write(spec_ctrl, tmp);
+		wrmsrq(MSR_IA32_SPEC_CTRL, 0);
+	}
+}
+
+void xen_arch_resume(void)
+{
+	int cpu;
+
+	on_each_cpu(xen_vcpu_notify_restore, NULL, 1);
+
+	for_each_online_cpu(cpu)
+		xen_pmu_init(cpu);
+}
+
+void xen_arch_suspend(void)
+{
+	int cpu;
+
+	for_each_online_cpu(cpu)
+		xen_pmu_finish(cpu);
+
+	on_each_cpu(xen_vcpu_notify_suspend, NULL, 1);
+}