From: tip-bot for Jarkko Sakkinen <jarkko.sakkinen@intel.com>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org,
jarkko.sakkinen@intel.com, tglx@linutronix.de, rjw@sisk.pl,
hpa@linux.intel.com, len.brown@intel.com
Subject: [tip:x86/trampoline] x86, realmode: fix 64-bit wakeup sequence
Date: Tue, 8 May 2012 15:27:28 -0700 [thread overview]
Message-ID: <tip-8e029fcdd8702719c9179317cae9ef84ebe7027e@git.kernel.org> (raw)
In-Reply-To: <1336501366-28617-18-git-send-email-jarkko.sakkinen@intel.com>
Commit-ID: 8e029fcdd8702719c9179317cae9ef84ebe7027e
Gitweb: http://git.kernel.org/tip/8e029fcdd8702719c9179317cae9ef84ebe7027e
Author: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
AuthorDate: Tue, 8 May 2012 21:22:40 +0300
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Tue, 8 May 2012 11:48:11 -0700
x86, realmode: fix 64-bit wakeup sequence
There were number of issues in wakeup sequence:
- Wakeup stack was placed in hardcoded address.
- NX bit in EFER was not enabled.
- Initialization incorrectly set physical address
of secondary_startup_64.
- Some alignment issues.
This patch fixes these issues and in addition:
- Unifies coding conventions in .S files.
- Sets alignments of code and data right.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-18-git-send-email-jarkko.sakkinen@intel.com
Originally-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/kernel/realmode.c | 2 +-
arch/x86/realmode/rm/Makefile | 1 +
| 2 +-
arch/x86/realmode/rm/reboot_32.S | 18 ++++----
arch/x86/realmode/rm/stack.S | 19 ++++++++
arch/x86/realmode/rm/trampoline_32.S | 29 ++++++------
arch/x86/realmode/rm/trampoline_64.S | 67 +++++++++++---------------
arch/x86/realmode/rm/wakeup/wakeup_asm.S | 75 +++++++++++++----------------
arch/x86/realmode/rmpiggy.S | 4 +-
9 files changed, 110 insertions(+), 107 deletions(-)
diff --git a/arch/x86/kernel/realmode.c b/arch/x86/kernel/realmode.c
index d85ac20..e7bf82a 100644
--- a/arch/x86/kernel/realmode.c
+++ b/arch/x86/kernel/realmode.c
@@ -64,7 +64,7 @@ void __init setup_real_mode(void)
*((u32 *)__va(real_mode_header.boot_gdt)) = __pa(boot_gdt);
#else
*((u64 *) __va(real_mode_header.startup_64_smp)) =
- (u64) __pa(secondary_startup_64);
+ (u64)secondary_startup_64;
*((u64 *) __va(real_mode_header.level3_ident_pgt)) =
__pa(level3_ident_pgt) + _KERNPG_TABLE;
diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile
index 2423142..c2c27a4 100644
--- a/arch/x86/realmode/rm/Makefile
+++ b/arch/x86/realmode/rm/Makefile
@@ -13,6 +13,7 @@ always := realmode.bin
realmode-y += header.o
realmode-y += trampoline_$(BITS).o
+realmode-y += stack.o
realmode-$(CONFIG_X86_32) += reboot_32.o
realmode-$(CONFIG_ACPI_SLEEP) += wakeup/wakeup.o
--git a/arch/x86/realmode/rm/header.S b/arch/x86/realmode/rm/header.S
index 730b131..a91ec8f 100644
--- a/arch/x86/realmode/rm/header.S
+++ b/arch/x86/realmode/rm/header.S
@@ -9,7 +9,7 @@
.section ".header", "a"
-ENTRY(real_mode_header)
+GLOBAL(real_mode_header)
.long pa_text_start
.long pa_ro_end
.long pa_end
diff --git a/arch/x86/realmode/rm/reboot_32.S b/arch/x86/realmode/rm/reboot_32.S
index 50ba994..8d9bfd1 100644
--- a/arch/x86/realmode/rm/reboot_32.S
+++ b/arch/x86/realmode/rm/reboot_32.S
@@ -16,10 +16,9 @@
*/
.section ".text32", "ax"
.code32
- .globl machine_real_restart_asm
- .balign 16
-machine_real_restart_asm:
+ .balign 16
+ENTRY(machine_real_restart_asm)
/* Set up the IDT for real mode. */
lidtl pa_machine_real_restart_idt
@@ -67,7 +66,7 @@ machine_real_restart_asm:
.text
.code16
- .balign 16
+ .balign 16
machine_real_restart_asm16:
1:
xorl %ecx, %ecx
@@ -102,15 +101,15 @@ bios:
ljmpw $0xf000, $0xfff0
.section ".rodata", "a"
- .globl machine_real_restart_idt, machine_real_restart_gdt
- .balign 16
-machine_real_restart_idt:
+ .balign 16
+GLOBAL(machine_real_restart_idt)
.word 0xffff /* Length - real mode default value */
.long 0 /* Base - real mode default value */
+END(machine_real_restart_idt)
- .balign 16
-machine_real_restart_gdt:
+ .balign 16
+GLOBAL(machine_real_restart_gdt)
/* Self-pointer */
.word 0xffff /* Length - real mode default value */
.long pa_machine_real_restart_gdt
@@ -130,3 +129,4 @@ machine_real_restart_gdt:
* semantics we don't have to reload the segments once CR0.PE = 0.
*/
.quad GDT_ENTRY(0x0093, 0x100, 0xffff)
+END(machine_real_restart_gdt)
diff --git a/arch/x86/realmode/rm/stack.S b/arch/x86/realmode/rm/stack.S
new file mode 100644
index 0000000..867ae87
--- /dev/null
+++ b/arch/x86/realmode/rm/stack.S
@@ -0,0 +1,19 @@
+/*
+ * Common heap and stack allocations
+ */
+
+#include <linux/linkage.h>
+
+ .data
+GLOBAL(HEAP)
+ .long rm_heap
+GLOBAL(heap_end)
+ .long rm_stack
+
+ .bss
+ .balign 16
+GLOBAL(rm_heap)
+ .space 2048
+GLOBAL(rm_stack)
+ .space 2048
+GLOBAL(rm_stack_end)
diff --git a/arch/x86/realmode/rm/trampoline_32.S b/arch/x86/realmode/rm/trampoline_32.S
index 279f82e..1ecdbb5 100644
--- a/arch/x86/realmode/rm/trampoline_32.S
+++ b/arch/x86/realmode/rm/trampoline_32.S
@@ -33,10 +33,9 @@
.text
.code16
- .globl trampoline_data
- .balign PAGE_SIZE
-trampoline_data:
+ .balign PAGE_SIZE
+ENTRY(trampoline_data)
wbinvd # Needed for NUMA-Q should be harmless for others
LJMPW_RM(1f)
@@ -70,20 +69,22 @@ trampoline_data:
ENTRY(startup_32) # note: also used from wakeup_asm.S
jmp *%eax
- .data
- .globl startup_32_smp, boot_gdt, trampoline_status
- .balign 4
-boot_gdt_descr:
- .word __BOOT_DS + 7 # gdt limit
-boot_gdt:
- .long 0 # gdt base
+ .section ".rodata","a"
+ .balign 4
boot_idt_descr:
.word 0 # idt limit = 0
.long 0 # idt base = 0L
-trampoline_status:
- .long 0
+ .data
-startup_32_smp:
- .long 0
+boot_gdt_descr:
+ .word __BOOT_DS + 7 # gdt limit
+GLOBAL(boot_gdt)
+ .long 0 # gdt base
+
+ .bss
+
+ .balign 4
+GLOBAL(trampoline_status) .space 4
+GLOBAL(startup_32_smp) .space 4
diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S
index 7459c52..f71ea08 100644
--- a/arch/x86/realmode/rm/trampoline_64.S
+++ b/arch/x86/realmode/rm/trampoline_64.S
@@ -52,7 +52,7 @@ ENTRY(trampoline_data)
# write marker for master knows we're running
# Setup stack
- movw $trampoline_stack_end, %sp
+ movl $rm_stack_end, %esp
call verify_cpu # Verify the cpu supports long mode
testl %eax, %eax # Check for return code
@@ -68,8 +68,11 @@ ENTRY(trampoline_data)
lidtl tidt # load idt with 0, 0
lgdtl tgdt # load gdt with whatever is appropriate
- mov $X86_CR0_PE, %ax # protected mode (PE) bit
- lmsw %ax # into protected mode
+ movw $__KERNEL_DS, %dx # Data segment descriptor
+
+ # Enable protected mode
+ movl $X86_CR0_PE, %eax # protected mode (PE) bit
+ movl %eax, %cr0 # into protected mode
# flush prefetch and jump to startup_32
ljmpl $__KERNEL32_CS, $pa_startup_32
@@ -83,27 +86,27 @@ no_longmode:
.code32
.balign 4
ENTRY(startup_32)
- movl $__KERNEL_DS, %eax # Initialize the %ds segment register
- movl %eax, %ds
+ movl %edx, %ss
+ addl $pa_real_mode_base, %esp
+ movl %edx, %ds
+ movl %edx, %es
+ movl %edx, %fs
+ movl %edx, %gs
movl $X86_CR4_PAE, %eax
movl %eax, %cr4 # Enable PAE mode
- movl pa_startup_64_smp, %esi
- movl pa_startup_64_smp_high, %edi
-
- # Setup trampoline 4 level pagetables
- leal pa_trampoline_level4_pgt, %eax
+ # Setup trampoline 4 level pagetables
+ movl $pa_level3_ident_pgt, %eax
movl %eax, %cr3
movl $MSR_EFER, %ecx
- movl $(1 << _EFER_LME), %eax # Enable Long Mode
+ movl $((1 << _EFER_LME) | (1 << _EFER_NX)), %eax # Enable Long Mode
xorl %edx, %edx
wrmsr
# Enable paging and in turn activate Long Mode
- # Enable protected mode
- movl $(X86_CR0_PG | X86_CR0_PE), %eax
+ movl $(X86_CR0_PG | X86_CR0_WP | X86_CR0_PE), %eax
movl %eax, %cr0
/*
@@ -119,10 +122,7 @@ ENTRY(startup_32)
.balign 4
ENTRY(startup_64)
# Now jump into the kernel using virtual addresses
- movl %edi, %eax
- shlq $32, %rax
- addl %esi, %eax
- jmp *%rax
+ jmpq *startup_64_smp(%rip)
.section ".rodata","a"
.balign 16
@@ -132,10 +132,10 @@ tidt:
# Duplicate the global descriptor table
# so the kernel can live anywhere
- .balign 4
+ .balign 16
.globl tgdt
tgdt:
- .short tgdt_end - tgdt # gdt limit
+ .short tgdt_end - tgdt - 1 # gdt limit
.long pa_tgdt
.short 0
.quad 0x00cf9b000000ffff # __KERNEL32_CS
@@ -143,23 +143,12 @@ tgdt:
.quad 0x00cf93000000ffff # __KERNEL_DS
tgdt_end:
- .data
- .balign 4
-GLOBAL(trampoline_status)
- .long 0
-
-trampoline_stack:
- .org 0x1000
-trampoline_stack_end:
-
- .globl level3_ident_pgt
- .globl level3_kernel_pgt
-GLOBAL(trampoline_level4_pgt)
- level3_ident_pgt: .quad 0
- .fill 510,8,0
- level3_kernel_pgt: .quad 0
-
- .globl startup_64_smp
- .globl startup_64_smp_high
-startup_64_smp: .long 0
-startup_64_smp_high: .long 0
+ .bss
+
+ .balign PAGE_SIZE
+GLOBAL(level3_ident_pgt) .space 511*8
+GLOBAL(level3_kernel_pgt) .space 8
+
+ .balign 8
+GLOBAL(startup_64_smp) .space 8
+GLOBAL(trampoline_status) .space 4
diff --git a/arch/x86/realmode/rm/wakeup/wakeup_asm.S b/arch/x86/realmode/rm/wakeup/wakeup_asm.S
index 8064e1c..f81c1cd 100644
--- a/arch/x86/realmode/rm/wakeup/wakeup_asm.S
+++ b/arch/x86/realmode/rm/wakeup/wakeup_asm.S
@@ -1,6 +1,7 @@
/*
* ACPI wakeup real mode startup stub
*/
+#include <linux/linkage.h>
#include <asm/segment.h>
#include <asm/msr-index.h>
#include <asm/page_types.h>
@@ -9,31 +10,33 @@
#include "../realmode.h"
#include "wakeup.h"
- .code16
+ .code16
/* This should match the structure in wakeup.h */
- .section ".data", "aw"
- .globl wakeup_header
-wakeup_header:
-video_mode: .short 0 /* Video mode number */
-pmode_entry: .long 0
-pmode_cs: .short __KERNEL_CS
-pmode_cr0: .long 0 /* Saved %cr0 */
-pmode_cr3: .long 0 /* Saved %cr3 */
-pmode_cr4: .long 0 /* Saved %cr4 */
-pmode_efer: .quad 0 /* Saved EFER */
-pmode_gdt: .quad 0
-pmode_misc_en: .quad 0 /* Saved MISC_ENABLE MSR */
-pmode_behavior: .long 0 /* Wakeup behavior flags */
-realmode_flags: .long 0
-real_magic: .long 0
-signature: .long WAKEUP_HEADER_SIGNATURE
- .size wakeup_header, .-wakeup_header
+ .section ".data", "aw"
+
+ .balign 16
+GLOBAL(wakeup_header)
+ video_mode: .short 0 /* Video mode number */
+ pmode_entry: .long 0
+ pmode_cs: .short __KERNEL_CS
+ pmode_cr0: .long 0 /* Saved %cr0 */
+ pmode_cr3: .long 0 /* Saved %cr3 */
+ pmode_cr4: .long 0 /* Saved %cr4 */
+ pmode_efer: .quad 0 /* Saved EFER */
+ pmode_gdt: .quad 0
+ pmode_misc_en: .quad 0 /* Saved MISC_ENABLE MSR */
+ pmode_behavior: .long 0 /* Wakeup behavior flags */
+ realmode_flags: .long 0
+ real_magic: .long 0
+ signature: .long WAKEUP_HEADER_SIGNATURE
+END(wakeup_header)
.text
.code16
- .globl wakeup_start
-wakeup_start:
+
+ .balign 16
+ENTRY(wakeup_start)
cli
cld
@@ -62,12 +65,14 @@ wakeup_start:
3:
/* Set up segments */
movw %cs, %ax
+ movw %ax, %ss
+ movl $rm_stack_end, %esp
movw %ax, %ds
movw %ax, %es
- movw %ax, %ss
- lidtl wakeup_idt
+ movw %ax, %fs
+ movw %ax, %gs
- movl $wakeup_stack_end, %esp
+ lidtl wakeup_idt
/* Clear the EFLAGS */
pushl $0
@@ -145,9 +150,8 @@ bogus_real_magic:
* be the case for other laptops or integrated video devices.
*/
- .globl wakeup_gdt
.balign 16
-wakeup_gdt:
+GLOBAL(wakeup_gdt)
.word 3*8-1 /* Self-descriptor */
.long pa_wakeup_gdt
.word 0
@@ -159,29 +163,18 @@ wakeup_gdt:
.word 0xffff /* 16-bit data segment @ real_mode_base */
.long 0x93000000 + pa_real_mode_base
.word 0x008f /* big real mode */
- .size wakeup_gdt, .-wakeup_gdt
+END(wakeup_gdt)
- .data
+ .section ".rodata","a"
.balign 8
/* This is the standard real-mode IDT */
-wakeup_idt:
+ .balign 16
+GLOBAL(wakeup_idt)
.word 0xffff /* limit */
.long 0 /* address */
.word 0
-
- .globl HEAP, heap_end
-HEAP:
- .long wakeup_heap
-heap_end:
- .long wakeup_stack
-
- .bss
-wakeup_heap:
- .space 2048
-wakeup_stack:
- .space 2048
-wakeup_stack_end:
+END(wakeup_idt)
.section ".signature","a"
end_signature:
diff --git a/arch/x86/realmode/rmpiggy.S b/arch/x86/realmode/rmpiggy.S
index 6047d7f..fd72a99 100644
--- a/arch/x86/realmode/rmpiggy.S
+++ b/arch/x86/realmode/rmpiggy.S
@@ -9,10 +9,10 @@
.balign PAGE_SIZE
-ENTRY(real_mode_blob)
+GLOBAL(real_mode_blob)
.incbin "arch/x86/realmode/rm/realmode.bin"
END(real_mode_blob)
-ENTRY(real_mode_relocs)
+GLOBAL(real_mode_relocs)
.incbin "arch/x86/realmode/rm/realmode.relocs"
END(real_mode_relocs)
next prev parent reply other threads:[~2012-05-08 22:27 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-08 18:22 [PATCH 00/23] x86, realmode: new infrastructure for realmode code Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 01/23] x86, realmode: 16-bit real-mode code support for relocs tool Jarkko Sakkinen
2012-05-08 22:13 ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 02/23] x86, realmode: realmode.bin infrastructure Jarkko Sakkinen
2012-05-08 18:53 ` Sam Ravnborg
2012-05-08 19:14 ` H. Peter Anvin
2012-05-08 20:15 ` H. Peter Anvin
2012-05-08 21:11 ` Sam Ravnborg
2012-05-08 21:21 ` H. Peter Anvin
2012-05-08 22:14 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-09 15:49 ` [PATCH 02/23] " H. Peter Anvin
[not found] ` <alpine.DEB.2.02.1205092256240.31031@jsakkine-mobl1.(null)>
2012-05-09 20:06 ` H. Peter Anvin
2012-05-08 18:22 ` [PATCH 03/23] x86, realmode: Relocator for realmode code Jarkko Sakkinen
2012-05-08 22:15 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 04/23] x86, realmode: Move reboot_32.S to unified " Jarkko Sakkinen
2012-05-08 22:16 ` [tip:x86/trampoline] x86, realmode: Move reboot_32. S " tip-bot for Jarkko Sakkinen
2012-05-09 7:12 ` [PATCH 04/23] x86, realmode: Move reboot_32.S " Paolo Bonzini
[not found] ` <alpine.DEB.2.02.1205091525100.6943@jsakkine-mobl2.(null)>
2012-05-09 13:53 ` H. Peter Anvin
2012-05-09 14:15 ` Paolo Bonzini
2012-05-09 14:18 ` H. Peter Anvin
2012-05-08 18:22 ` [PATCH 05/23] x86, realmode: Move SMP trampoline " Jarkko Sakkinen
2012-05-08 22:17 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 06/23] x86, realmode: Move ACPI wakeup " Jarkko Sakkinen
2012-05-08 22:18 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 07/23] x86, realmode: Set permission for real mode pages Jarkko Sakkinen
2012-05-08 22:19 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 08/23] x86, realmode: Allow absolute pa_* symbols in the realmode code Jarkko Sakkinen
2012-05-08 22:19 ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 09/23] x86, realmode: Add .text64 section, make barrier symbols absolute Jarkko Sakkinen
2012-05-08 22:20 ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 10/23] x86, realmode: Move bits to the proper sections in trampoline_64.S Jarkko Sakkinen
2012-05-08 22:21 ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 11/23] x86, realmode: Align .data section in trampoline_32.S Jarkko Sakkinen
2012-05-08 22:22 ` [tip:x86/trampoline] x86, realmode: Align . data " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 12/23] x86, realmode: Remove indirect jumps in trampoline_64.S Jarkko Sakkinen
2012-05-08 22:23 ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 13/23] x86, realmode: Remove indirect jumps in trampoline_32 and wakeup_asm Jarkko Sakkinen
2012-05-08 22:24 ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 14/23] x86, realmode: Replace open-coded ljmpw with a macro Jarkko Sakkinen
2012-05-08 22:24 ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 15/23] x86, realmode: Move trampoline_*.S early in the link order Jarkko Sakkinen
2012-05-08 22:25 ` [tip:x86/trampoline] x86, realmode: Move trampoline_*. S " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 16/23] x86, realmode: Fix always-zero test in reboot_32.S Jarkko Sakkinen
2012-05-08 22:26 ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 17/23] x86, realmode: fix 64-bit wakeup sequence Jarkko Sakkinen
2012-05-08 22:27 ` tip-bot for Jarkko Sakkinen [this message]
2012-05-08 18:22 ` [PATCH 18/23] x86, realmode: don't copy real_mode_header Jarkko Sakkinen
2012-05-08 22:28 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 19/23] x86, realmode: flattened rm hierachy Jarkko Sakkinen
2012-05-08 22:29 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 20/23] x86, realmode: header for trampoline code Jarkko Sakkinen
2012-05-08 22:29 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 21/23] x86, realmode: move relocs from scripts/ to arch/x86/tools Jarkko Sakkinen
2012-05-08 22:30 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 22/23] x86, realmode: fixes compilation issue in tboot.c Jarkko Sakkinen
2012-05-08 22:31 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 23/23] x86, realmode: read cr4 and EFER from kernel for 64-bit trampoline Jarkko Sakkinen
2012-05-08 22:32 ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-16 20:37 ` [tip:x86/trampoline] x86, realmode: Mask out EFER. LMA when saving trampoline EFER tip-bot for H. Peter Anvin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=tip-8e029fcdd8702719c9179317cae9ef84ebe7027e@git.kernel.org \
--to=jarkko.sakkinen@intel.com \
--cc=hpa@linux.intel.com \
--cc=hpa@zytor.com \
--cc=len.brown@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tip-commits@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=rjw@sisk.pl \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.