Merge tag 'x86_urgent_for_v6.2_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Start checking for -mindirect-branch-cs-prefix clang support too now
   that LLVM 16 will support it

 - Fix a NULL ptr deref when suspending with Xen PV

 - Have a SEV-SNP guest check explicitly for features enabled by the
   hypervisor and fail gracefully if some are unsupported by the guest
   instead of failing in a non-obvious and hard-to-debug way

 - Fix a MSI descriptor leakage under Xen

 - Mark Xen's MSI domain as supporting MSI-X

 - Prevent legacy PIC interrupts from being resent in software by
   marking them level triggered, as they should be, which lead to a NULL
   ptr deref

* tag 'x86_urgent_for_v6.2_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/build: Move '-mindirect-branch-cs-prefix' out of GCC-only block
  acpi: Fix suspend with Xen PV
  x86/sev: Add SEV-SNP guest feature negotiation support
  x86/pci/xen: Fixup fallout from the PCI/MSI overhaul
  x86/pci/xen: Set MSI_FLAG_PCI_MSIX support in Xen MSI domain
  x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 0b557c0d405e..4ca667251272 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -60,13 +60,17 @@ static struct notifier_block tts_notifier = {
 	.priority	= 0,
 };
 
+#ifndef acpi_skip_set_wakeup_address
+#define acpi_skip_set_wakeup_address() false
+#endif
+
 static int acpi_sleep_prepare(u32 acpi_state)
 {
 #ifdef CONFIG_ACPI_SLEEP
 	unsigned long acpi_wakeup_address;
 
 	/* do we have a wakeup address for S2 and S3? */
-	if (acpi_state == ACPI_STATE_S3) {
+	if (acpi_state == ACPI_STATE_S3 && !acpi_skip_set_wakeup_address()) {
 		acpi_wakeup_address = acpi_get_wakeup_address();
 		if (!acpi_wakeup_address)
 			return -EFAULT;