From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>,
x86@kernel.org, Stephen Tweedie <sct@redhat.com>,
Eduardo Habkost <ehabkost@redhat.com>,
Mark McLoughlin <markmc@redhat.com>,
x86@kernel.org
Subject: [PATCH 04 of 55] x86: clean up formatting of __switch_to
Date: Tue, 08 Jul 2008 15:06:26 -0700 [thread overview]
Message-ID: <408aabebf5dc1a06edcb.1215554786@localhost> (raw)
In-Reply-To: <patchbomb.1215554782@localhost>
process_64.c:__switch_to has some very old strange formatting, some of
it dating back to pre-git. Fix it up.
No functional changes.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
arch/x86/kernel/process_64.c | 54 +++++++++++++++++++++---------------------
1 file changed, 27 insertions(+), 27 deletions(-)
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -575,8 +575,8 @@
struct task_struct *
__switch_to(struct task_struct *prev_p, struct task_struct *next_p)
{
- struct thread_struct *prev = &prev_p->thread,
- *next = &next_p->thread;
+ struct thread_struct *prev = &prev_p->thread;
+ struct thread_struct *next = &next_p->thread;
int cpu = smp_processor_id();
struct tss_struct *tss = &per_cpu(init_tss, cpu);
unsigned fsindex, gsindex;
@@ -624,35 +624,34 @@
/*
* Switch FS and GS.
+ *
+ * Segment register != 0 always requires a reload. Also
+ * reload when it has changed. When prev process used 64bit
+ * base always reload to avoid an information leak.
*/
- {
- /* segment register != 0 always requires a reload.
- also reload when it has changed.
- when prev process used 64bit base always reload
- to avoid an information leak. */
- if (unlikely(fsindex | next->fsindex | prev->fs)) {
- loadsegment(fs, next->fsindex);
- /* check if the user used a selector != 0
- * if yes clear 64bit base, since overloaded base
- * is always mapped to the Null selector
- */
- if (fsindex)
+ if (unlikely(fsindex | next->fsindex | prev->fs)) {
+ loadsegment(fs, next->fsindex);
+ /*
+ * Check if the user used a selector != 0; if yes
+ * clear 64bit base, since overloaded base is always
+ * mapped to the Null selector
+ */
+ if (fsindex)
prev->fs = 0;
- }
- /* when next process has a 64bit base use it */
- if (next->fs)
- wrmsrl(MSR_FS_BASE, next->fs);
- prev->fsindex = fsindex;
+ }
+ /* when next process has a 64bit base use it */
+ if (next->fs)
+ wrmsrl(MSR_FS_BASE, next->fs);
+ prev->fsindex = fsindex;
- if (unlikely(gsindex | next->gsindex | prev->gs)) {
- load_gs_index(next->gsindex);
- if (gsindex)
+ if (unlikely(gsindex | next->gsindex | prev->gs)) {
+ load_gs_index(next->gsindex);
+ if (gsindex)
prev->gs = 0;
- }
- if (next->gs)
- wrmsrl(MSR_KERNEL_GS_BASE, next->gs);
- prev->gsindex = gsindex;
}
+ if (next->gs)
+ wrmsrl(MSR_KERNEL_GS_BASE, next->gs);
+ prev->gsindex = gsindex;
/* Must be after DS reload */
unlazy_fpu(prev_p);
@@ -665,7 +664,8 @@
write_pda(pcurrent, next_p);
write_pda(kernelstack,
- (unsigned long)task_stack_page(next_p) + THREAD_SIZE - PDA_STACKOFFSET);
+ (unsigned long)task_stack_page(next_p) +
+ THREAD_SIZE - PDA_STACKOFFSET);
#ifdef CONFIG_CC_STACKPROTECTOR
/*
* Build time only check to make sure the stack_canary is at
next prev parent reply other threads:[~2008-07-08 23:16 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-08 22:06 [PATCH 00 of 55] xen64: implement 64-bit Xen support Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 01 of 55] x86/paravirt: Call paravirt_pagetable_setup_{start, done} Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 02 of 55] pvops-64: call paravirt_post_allocator_init() on setup_arch() Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 03 of 55] x86_64: there's no need to preallocate level1_fixmap_pgt Jeremy Fitzhardinge
2008-07-08 22:06 ` Jeremy Fitzhardinge [this message]
2008-07-08 22:06 ` [PATCH 05 of 55] x86: use __page_aligned_data/bss Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 06 of 55] x86_64: adjust exception frame in ia32entry Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 07 of 55] x86_64: unstatic get_local_pda Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 08 of 55] xen: print backtrace on multicall failure Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 09 of 55] xen-netfront: fix xennet_release_tx_bufs() Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 10 of 55] xen: add xen_arch_resume()/xen_timer_resume hook for ia64 support Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 11 of 55] xen: define set_pte from the outset Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 12 of 55] xen64: define asm/xen/interface for 64-bit Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 13 of 55] xen: make ELF notes work for 32 and 64 bit Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 14 of 55] xen: fix 64-bit hypercall variants Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 15 of 55] xen64: fix calls into hypercall page Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 16 of 55] xen64: add extra pv_mmu_ops Jeremy Fitzhardinge
2008-07-09 7:55 ` Mark McLoughlin
2008-07-09 8:02 ` Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 17 of 55] xen64: random ifdefs to mask out 32-bit only code Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 18 of 55] xen64: get active_mm from the pda Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 19 of 55] xen: move smp setup into smp.c Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 20 of 55] x86_64: add workaround for no %gs-based percpu Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 21 of 55] xen64: smp.c compile hacking Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 22 of 55] xen64: add xen-head code to head_64.S Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 23 of 55] xen64: add asm-offsets Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 24 of 55] xen64: add 64-bit assembler Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 25 of 55] xen64: use set_fixmap for shared_info structure Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 26 of 55] xen: cpu_detect is 32-bit only Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 27 of 55] xen64: add hypervisor callbacks for events, etc Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 28 of 55] xen64: early mapping setup Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 29 of 55] xen64: 64-bit starts using set_pte from very early Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 30 of 55] xen64: map an initial chunk of physical memory Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 31 of 55] xen32: create initial mappings like 64-bit Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 32 of 55] xen: fix truncation of machine address Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 33 of 55] xen64: use arbitrary_virt_to_machine for xen_set_pmd Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 34 of 55] xen: set num_processors Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 35 of 55] xen64: defer setting pagetable alloc/release ops Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 36 of 55] xen: use set_pte_vaddr Jeremy Fitzhardinge
2008-07-08 22:06 ` [PATCH 37 of 55] xen64: xen_write_idt_entry() and cvt_gate_to_trap() Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 38 of 55] xen64: deal with extra words Xen pushes onto exception frames Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 39 of 55] xen64: add pvop for swapgs Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 40 of 55] xen64: register callbacks in arch-independent way Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 41 of 55] xen64: add identity irq->vector map Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 42 of 55] Xen64: HYPERVISOR_set_segment_base() implementation Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 43 of 55] xen64: implement xen_load_gs_index() Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 44 of 55] xen: rework pgd_walk to deal with 32/64 bit Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 45 of 55] xen: make sure the kernel command line is right Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 46 of 55] xen: enable PM_SLEEP for CONFIG_XEN Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 47 of 55] xen64: implement failsafe callback Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 48 of 55] xen64: Clear %fs on xen_load_tls() Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 49 of 55] xen64: implement 64-bit update_descriptor Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 50 of 55] xen64: save lots of registers Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 51 of 55] xen64: allocate and manage user pagetables Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 52 of 55] xen64: set up syscall and sysenter entrypoints for 64-bit Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 53 of 55] xen64: set up userspace syscall patch Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 54 of 55] xen: implement Xen write_msr operation Jeremy Fitzhardinge
2008-07-08 22:07 ` [PATCH 55 of 55] xen: update Kconfig to allow 64-bit Xen Jeremy Fitzhardinge
2008-07-09 11:12 ` [PATCH 00 of 55] xen64: implement 64-bit Xen support Ingo Molnar
2008-07-09 11:16 ` [patch] power, xen64: fix PM_SLEEP build dependencies (was: Re: [PATCH 00 of 55] xen64: implement 64-bit Xen support) Ingo Molnar
2008-07-09 19:47 ` Ingo Molnar
2008-07-09 19:52 ` Ingo Molnar
2008-07-09 19:59 ` Rafael J. Wysocki
2008-07-09 20:02 ` Rafael J. Wysocki
2008-07-09 20:04 ` Ingo Molnar
2008-07-09 20:17 ` [patch] power, xen64: fix PM_SLEEP build dependencies Jeremy Fitzhardinge
2008-07-09 20:17 ` [patch] power, xen64: fix PM_SLEEP build dependencies (was: Re: [PATCH 00 of 55] xen64: implement 64-bit Xen support) Rafael J. Wysocki
2008-07-09 20:23 ` [patch] power, xen64: fix PM_SLEEP build dependencies Jeremy Fitzhardinge
2008-07-09 20:26 ` Ingo Molnar
2008-07-09 20:33 ` Rafael J. Wysocki
2008-07-09 20:39 ` Jeremy Fitzhardinge
2008-07-09 20:42 ` Ingo Molnar
2008-07-09 20:53 ` Rafael J. Wysocki
2008-07-09 20:23 ` [patch] power, xen64: fix PM_SLEEP build dependencies (was: Re: [PATCH 00 of 55] xen64: implement 64-bit Xen support) Ingo Molnar
2008-07-09 20:40 ` [patch] power, xen64: fix PM_SLEEP build dependencies Jeremy Fitzhardinge
2008-07-09 11:21 ` [patch] xen64: fix !HVC_XEN build dependency (was: Re: [PATCH 00 of 55] xen64: implement 64-bit Xen support) Ingo Molnar
2008-07-09 16:07 ` [patch] xen64: fix !HVC_XEN build dependency Jeremy Fitzhardinge
2008-07-09 11:47 ` [patch] xen64: fix build error on 32-bit + !HIGHMEM (was: Re: [PATCH 00 of 55] xen64: implement 64-bit Xen support) Ingo Molnar
2008-07-09 16:07 ` [patch] xen64: fix build error on 32-bit + !HIGHMEM Jeremy Fitzhardinge
2008-07-09 16:12 ` [PATCH 00 of 55] xen64: implement 64-bit Xen support Jeremy Fitzhardinge
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