From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>
Cc: Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Darren Hart <dvhart@infradead.org>,
Andy Shevchenko <andy@infradead.org>,
Nadav Amit <nadav.amit@gmail.com>,
"VMware, Inc." <pv-drivers@vmware.com>,
Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Hans de Goede <hdegoede@redhat.com>,
Cezary Rojewski <cezary.rojewski@intel.com>,
Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
Liam Girdwood <liam.r.girdwood@linux.intel.com>,
Jie Yang <yang.jie@linux.intel.com>,
Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
Takashi Iwai <tiwai@suse.com>,
linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org, linux-efi@vger.kernel.org,
platform-driver-x86@vger.kernel.org, linux-acpi@vger.kernel.org,
alsa-devel@alsa-project.org
Subject: [PATCH v2 11/12] ACPI/sleep: Convert acpi_wakeup_address into a function
Date: Tue, 26 Nov 2019 08:54:16 -0800 [thread overview]
Message-ID: <20191126165417.22423-12-sean.j.christopherson@intel.com> (raw)
In-Reply-To: <20191126165417.22423-1-sean.j.christopherson@intel.com>
Convert acpi_wakeup_address from a raw variable into a function so that
x86 can wrap its dereference of the real mode boot header in a function
instead of broadcasting it to the world via a #define. This sets the
stage for a future patch to move x86's definition of the new function,
acpi_get_wakeup_address(), out of asm/acpi.h and thus break acpi.h's
dependency on asm/realmode.h.
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
arch/ia64/include/asm/acpi.h | 5 ++++-
arch/ia64/kernel/acpi.c | 2 --
arch/x86/include/asm/acpi.h | 5 ++++-
drivers/acpi/sleep.c | 3 +++
4 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index f886d4dc9d55..b66ba907019c 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -38,7 +38,10 @@ int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
/* Low-level suspend routine. */
extern int acpi_suspend_lowlevel(void);
-extern unsigned long acpi_wakeup_address;
+static inline unsigned long acpi_get_wakeup_address(void)
+{
+ return 0;
+}
/*
* Record the cpei override flag and current logical cpu. This is
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 70d1587ddcd4..a5636524af76 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -42,8 +42,6 @@ int acpi_lapic;
unsigned int acpi_cpei_override;
unsigned int acpi_cpei_phys_cpuid;
-unsigned long acpi_wakeup_address = 0;
-
#define ACPI_MAX_PLATFORM_INTERRUPTS 256
/* Array to record platform interrupt vectors for generic interrupt routing. */
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index bc9693c9107e..23ffafd927a1 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -62,7 +62,10 @@ static inline void acpi_disable_pci(void)
extern int (*acpi_suspend_lowlevel)(void);
/* Physical address to resume after wakeup */
-#define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
+static inline unsigned long acpi_get_wakeup_address(void)
+{
+ return ((unsigned long)(real_mode_header->wakeup_start));
+}
/*
* Check if the CPU can handle C2 and deeper
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 9fa77d72ef27..2e87ccf17ff6 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -61,8 +61,11 @@ static struct notifier_block tts_notifier = {
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) {
+ acpi_wakeup_address = acpi_get_wakeup_address();
if (!acpi_wakeup_address)
return -EFAULT;
acpi_set_waking_vector(acpi_wakeup_address);
--
2.24.0
next prev parent reply other threads:[~2019-11-26 16:55 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-26 16:54 [PATCH v2 00/12] treewide: break dependencies on x86's RM header Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 01/12] x86/efi: Explicitly include realmode.h to handle RM trampoline quirk Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 02/12] x86/boot: Explicitly include realmode.h to handle RM reservations Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 03/12] x86/ftrace: Explicitly include vmalloc.h for set_vm_flush_reset_perms() Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 04/12] x86/kprobes: " Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 05/12] perf/x86/intel: Explicitly include asm/io.h to use virt_to_phys() Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 06/12] efi/capsule-loader: Explicitly include linux/io.h for page_to_phys() Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 07/12] virt: vbox: Explicitly include linux/io.h to pick up various defs Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 08/12] vmw_balloon: Explicitly include linux/io.h for virt_to_phys() Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 09/12] ASoC: Intel: Skylake: " Sean Christopherson
2019-11-26 16:54 ` [PATCH v2 10/12] x86/ACPI/sleep: Remove an unnecessary include of asm/realmode.h Sean Christopherson
2019-11-26 16:54 ` Sean Christopherson [this message]
2019-11-27 21:30 ` [PATCH v2 11/12] ACPI/sleep: Convert acpi_wakeup_address into a function Pavel Machek
2019-11-26 16:54 ` [PATCH v2 12/12] x86/ACPI/sleep: Move acpi_get_wakeup_address() into sleep.c, remove <asm/realmode.h> from <asm/acpi.h> Sean Christopherson
2019-11-27 7:20 ` [PATCH v2 00/12] treewide: break dependencies on x86's RM header Ingo Molnar
2019-11-27 14:47 ` Sean Christopherson
2019-11-27 17:25 ` Ingo Molnar
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