Revision tags: release/7.4.0_cvs, release/8.2.0_cvs, release/7.4.0, release/8.2.0 |
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50e3cec3 |
| 22-Dec-2010 |
Jung-uk Kim <jkim@FreeBSD.org> |
Increase size of pcb_flags to four bytes.
Requested by: bde, jhb
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e6c006d9 |
| 22-Dec-2010 |
Jung-uk Kim <jkim@FreeBSD.org> |
Improve PCB flags handling and make it more robust. Add two new functions for manipulating pcb_flags. These inline functions are very similar to atomic_set_char(9) and atomic_clear_char(9) but with
Improve PCB flags handling and make it more robust. Add two new functions for manipulating pcb_flags. These inline functions are very similar to atomic_set_char(9) and atomic_clear_char(9) but without unnecessary LOCK prefix for SMP. Add comments about the rationale[1]. Use these functions wherever possible. Although there are some places where it is not strictly necessary (e.g., a PCB is copied to create a new PCB), it is done across the board for sake of consistency. Turn pcb_full_iret into a PCB flag as it is safe now. Move rarely used fields before pcb_flags and reduce size of pcb_flags to one byte. Fix some style(9) nits in pcb.h while I am in the neighborhood.
Reviewed by: kib Submitted by: kib[1] MFC after: 2 months
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6d4b9715 |
| 09-Dec-2010 |
Dimitry Andric <dim@FreeBSD.org> |
Sync: merge r216133 through r216338 from ^/head.
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0f0170e6 |
| 07-Dec-2010 |
Konstantin Belousov <kib@FreeBSD.org> |
Retire write-only PCB_FULLCTX pcb flag on amd64.
Reminded by: Petr Salinger <Petr.Salinger seznam cz> Tested by: pho MFC after: 1 week
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b17f9ad2 |
| 16-Aug-2010 |
Marcel Moolenaar <marcel@FreeBSD.org> |
Merge svn+ssh://svn.freebsd.org/base/head@211344
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6305bb24 |
| 02-Aug-2010 |
Jung-uk Kim <jkim@FreeBSD.org> |
Rearrange struct pcb. r177532 (CVS r1.64 of pcb.h) moved pcb_flags to make better use of cache lines by placing it before pcb_save (now pcb_user_save), which is moved to the end of pcb since r210777.
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a2d2c836 |
| 02-Aug-2010 |
Jung-uk Kim <jkim@FreeBSD.org> |
- Merge savectx2() with savectx() and struct xpcb with struct pcb. [1] savectx() is only used for panic dump (dumppcb) and kdb (stoppcbs). Thus, saving additional information does not hurt and it ma
- Merge savectx2() with savectx() and struct xpcb with struct pcb. [1] savectx() is only used for panic dump (dumppcb) and kdb (stoppcbs). Thus, saving additional information does not hurt and it may be even beneficial. Unfortunately, struct pcb has grown larger to accommodate more data. Move 512-byte long pcb_user_save to the end of struct pcb while I am here. - savectx() now saves FPU state unconditionally and copy it to the PCB of FPU thread if necessary. This gives panic dump and kdb a chance to take a look at the current FPU state even if the FPU is "supposedly" not used. - Resuming CPU now unconditionally reinitializes FPU. If the saved FPU state was irrelevant, it could be in an unknown state.
Suggested by: bde [1]
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Revision tags: release/8.1.0_cvs, release/8.1.0 |
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970c23b2 |
| 06-Jun-2010 |
Marcel Moolenaar <marcel@FreeBSD.org> |
Merge svn+ssh://svn.freebsd.org/base/head@208879
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6cf9a08d |
| 05-Jun-2010 |
Konstantin Belousov <kib@FreeBSD.org> |
Introduce the x86 kernel interfaces to allow kernel code to use FPU/SSE hardware. Caller should provide a save area that is chained into the stack of the areas; pcb save_area for usermode FPU state i
Introduce the x86 kernel interfaces to allow kernel code to use FPU/SSE hardware. Caller should provide a save area that is chained into the stack of the areas; pcb save_area for usermode FPU state is on top. The pcb now contains a pointer to the current FPU saved area, used during FPUDNA handling and context switches. There is also a facility to allow the kernel thread to use pcb save_area.
Change the dreaded warnings "npxdna in kernel mode!" into the panics when FPU usage is not registered.
KPI discussed with: fabient Tested by: pho, fabient Hardware provided by: Sentex Communications MFC after: 1 month
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Revision tags: release/7.3.0_cvs, release/7.3.0, release/8.0.0_cvs, release/8.0.0 |
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10b3b545 |
| 17-Sep-2009 |
Dag-Erling Smørgrav <des@FreeBSD.org> |
Merge from head
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11e9b8ba |
| 04-Aug-2009 |
Oleksandr Tymoshenko <gonzo@FreeBSD.org> |
- MFC @196061
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a2622e5d |
| 09-Jul-2009 |
Konstantin Belousov <kib@FreeBSD.org> |
Restore the segment registers and segment base MSRs for amd64 syscall return path only when neither thread was context switched while executing syscall code nor syscall explicitely modified LDT or MS
Restore the segment registers and segment base MSRs for amd64 syscall return path only when neither thread was context switched while executing syscall code nor syscall explicitely modified LDT or MSRs.
Save segment registers in trap handlers before interrupts are enabled, to not allow context switches to happen before registers are saved. Use separated byte in pcb for indication of fast/full return, since pcb_flags are not synchronized with context switches.
The change puts back syscall microbenchmark numbers that were slowed down after commit of the support for LDT on amd64.
Reviewed by: jeff Tested (and tested, and tested ...) by: pho Approved by: re (kensmith)
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Revision tags: release/7.2.0_cvs, release/7.2.0 |
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9c797940 |
| 13-Apr-2009 |
Oleksandr Tymoshenko <gonzo@FreeBSD.org> |
- Merge from HEAD
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4a608e44 |
| 01-Apr-2009 |
Jung-uk Kim <jkim@FreeBSD.org> |
Garbage collect unused stack segment since r190620.
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2c66ccca |
| 01-Apr-2009 |
Konstantin Belousov <kib@FreeBSD.org> |
Save and restore segment registers on amd64 when entering and leaving the kernel on amd64. Fill and read segment registers for mcontext and signals. Handle traps caused by restoration of the invalida
Save and restore segment registers on amd64 when entering and leaving the kernel on amd64. Fill and read segment registers for mcontext and signals. Handle traps caused by restoration of the invalidated selectors.
Implement user-mode creation and manipulation of the process-specific LDT descriptors for amd64, see sysarch(2).
Implement support for TSS i/o port access permission bitmap for amd64.
Context-switch LDT and TSS. Do not save and restore segment registers on the context switch, that is handled by kernel enter/leave trampolines now. Remove segment restore code from the signal trampolines for freebsd/amd64, freebsd/ia32 and linux/i386 for the same reason.
Implement amd64-specific compat shims for sysarch.
Linuxolator (temporary ?) switched to use gsbase for thread_area pointer.
TODO: Currently, gdb is not adapted to show segment registers from struct reg. Also, no machine-depended ptrace command is added to set segment registers for debugged process.
In collaboration with: pho Discussed with: peter Reviewed by: jhb Linuxolator tested by: dchagin
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c66d2b38 |
| 17-Mar-2009 |
Jung-uk Kim <jkim@FreeBSD.org> |
Initial suspend/resume support for amd64.
This code is heavily inspired by Takanori Watanabe's experimental SMP patch for i386 and large portion was shamelessly cut and pasted from Peter Wemm's AP b
Initial suspend/resume support for amd64.
This code is heavily inspired by Takanori Watanabe's experimental SMP patch for i386 and large portion was shamelessly cut and pasted from Peter Wemm's AP boot code.
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1829d5da |
| 12-Mar-2009 |
Warner Losh <imp@FreeBSD.org> |
Update the projects tree to a newer FreeBSD current.
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2ee8325f |
| 05-Mar-2009 |
John Baldwin <jhb@FreeBSD.org> |
A better fix for handling different FPU initial control words for different ABIs: - Store the FPU initial control word in the pcb for each thread. - When first using the FPU, load the initial control
A better fix for handling different FPU initial control words for different ABIs: - Store the FPU initial control word in the pcb for each thread. - When first using the FPU, load the initial control word after restoring the clean state if it is not the standard control word. - Provide a correct control word for Linux/i386 binaries under FreeBSD/amd64. - Adjust the control word returned for fpugetregs()/npxgetregs() when a thread hasn't used the FPU yet to reflect the real initial control word for the current ABI. - The Linux/i386 ABI for FreeBSD/i386 now properly sets the right control word instead of trashing whatever the current state of the FPU is.
Reviewed by: bde
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9edc34f8 |
| 05-Mar-2009 |
John Baldwin <jhb@FreeBSD.org> |
Move the PCB flag macros up next to the 'pcb_flags' member in the struct.
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Revision tags: release/7.1.0_cvs, release/7.1.0, release/6.4.0_cvs, release/6.4.0 |
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3bd5e467 |
| 08-Sep-2008 |
Konstantin Belousov <kib@FreeBSD.org> |
The pcb_gs32p should be per-cpu, not per-thread pointer. This is location in GDT where the segment descriptor from pcb_gs32sd is copied, and the location is in GDT local to CPU.
Noted and reviewed b
The pcb_gs32p should be per-cpu, not per-thread pointer. This is location in GDT where the segment descriptor from pcb_gs32sd is copied, and the location is in GDT local to CPU.
Noted and reviewed by: peter MFC after: 1 week
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8f4a1f3a |
| 30-Jul-2008 |
Konstantin Belousov <kib@FreeBSD.org> |
Bring back the save/restore of the %ds, %es, %fs and %gs registers for the 32bit images on amd64.
Change the semantic of the PCB_32BIT pcb flag to request the context switch code to operate on the s
Bring back the save/restore of the %ds, %es, %fs and %gs registers for the 32bit images on amd64.
Change the semantic of the PCB_32BIT pcb flag to request the context switch code to operate on the segment registers. Its previous meaning of saving or restoring the %gs base offset is assigned to the new PCB_GS32BIT flag.
FreeBSD 32bit image activator sets the PCB_32BIT flag, while Linux 32bit emulation sets PCB_32BIT | PCB_GS32BIT.
Reviewed by: peter MFC after: 2 weeks
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6c73bb35 |
| 23-Mar-2008 |
Peter Wemm <peter@FreeBSD.org> |
Move pcb_flags to make trivially better use of cache lines.
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Revision tags: release/7.0.0_cvs, release/7.0.0, release/6.3.0_cvs, release/6.3.0 |
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9c5b213e |
| 30-Mar-2007 |
Jung-uk Kim <jkim@FreeBSD.org> |
MFP4: Linux set_thread_area syscall (aka TLS) support for amd64.
Initial version was submitted by Divacky Roman and mostly rewritten by me.
Tested by: emulation
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Revision tags: release/6.2.0_cvs, release/6.2.0, release/5.5.0_cvs, release/5.5.0, release/6.1.0_cvs, release/6.1.0, release/6.0.0_cvs, release/6.0.0 |
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d176c062 |
| 27-Sep-2005 |
Peter Wemm <peter@FreeBSD.org> |
I believe the stack underflows during early development that caused me to add spare padding at the beginning of the pcb are long gone. Remove the padding fields.
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1acc225f |
| 27-Sep-2005 |
Peter Wemm <peter@FreeBSD.org> |
Kill pcb_rflags. It served no purpose.
Reported by: bde
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