AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity
e17b2f114c
kernel_optimize_test/arch/arm
History
Ian Campbell e17b2f114c xen: swiotlb: handle sizeof(dma_addr_t) != sizeof(phys_addr_t) 
The use of phys_to_machine and machine_to_phys in the phys<=>bus conversions
causes us to lose the top bits of the DMA address if the size of a DMA address is not the same as the size of the phyiscal address.

This can happen in practice on ARM where foreign pages can be above 4GB even
though the local kernel does not have LPAE page tables enabled (which is
totally reasonable if the guest does not itself have >4GB of RAM). In this
case the kernel still maps the foreign pages at a phys addr below 4G (as it
must) but the resulting DMA address (returned by the grant map operation) is
much higher.

This is analogous to a hardware device which has its view of RAM mapped up
high for some reason.

This patch makes I/O to foreign pages (specifically blkif) work on 32-bit ARM
systems with more than 4GB of RAM.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2014-01-30 12:54:20 +00:00
..
boot Second Round of Renesas ARM based SoC Fixes for v3.13 2013-12-28 15:20:35 -08:00
common Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-11-20 13:20:24 -08:00
configs ARM: multi_v7_defconfig: enable SDHCI_BCM_KONA and MMC_BLOCK_MINORS=16 2013-12-03 12:39:14 -08:00
crypto
include xen/grant: Implement an grant frame array struct (v3). 2014-01-06 10:44:20 -05:00
kernel ARM: fix asm/memory.h build error 2013-12-13 20:25:30 +00:00
kvm Fix percpu vmalloc allocations 2013-11-19 10:43:05 +02:00
lib ARM: 7907/1: lib: delay-loop: Add align directive to fix BogoMIPS calculation 2013-11-30 22:21:03 +00:00
mach-at91 ARM: SoC fixes for 3.13-rc 2013-12-04 08:56:18 -08:00
mach-bcm BCM changes for 3.13/soc. A number of cleanup related changes. 2013-10-30 14:03:39 -07:00
mach-bcm2835 Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-11-12 10:02:59 +09:00
mach-clps711x ARM: clps711x: Use linux/sched_clock.h 2013-10-11 14:50:10 -07:00
mach-cns3xxx
mach-davinci This pull request includes a patch 2013-12-04 14:28:26 -08:00
mach-dove ARM: driver updates for 3.13 2013-11-11 17:05:37 +09:00
mach-ebsa110
mach-ep93xx usb: ohci: remove ep93xx bus glue platform driver 2013-10-29 16:43:37 -07:00
mach-exynos ACPI and power management updates for 3.13-rc1 2013-11-14 13:41:48 +09:00
mach-footbridge ARM: footbridge: fix EBSA285 LEDs 2013-11-30 22:20:59 +00:00
mach-gemini GPIO bulk changes for the v3.13 development cycle 2013-11-12 15:50:46 +09:00
mach-highbank ARM: highbank: handle soft poweroff and reset key events 2013-12-04 09:28:50 -08:00
mach-imx Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-11-18 15:50:07 -08:00
mach-integrator Few clock fixes, a runtime PM fix, and pinctrl-single fix along 2013-11-15 15:17:59 -08:00
mach-iop13xx dmaengine: remove DMA unmap from drivers 2013-11-14 11:04:38 -08:00
mach-iop32x
mach-iop33x
mach-ixp4xx Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-11-14 08:51:29 +09:00
mach-keystone DeviceTree updates for 3.13. This is a bit larger pull request than 2013-11-12 16:52:17 +09:00
mach-kirkwood Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-11-18 15:50:07 -08:00
mach-ks8695
mach-lpc32xx
mach-mmp fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
mach-msm Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-11-12 10:36:00 +09:00
mach-mv78xx0
mach-mvebu ARM: mvebu: support running big-endian 2013-10-19 20:46:34 +01:00
mach-mxs ARM: SoC DT updates for 3.13 2013-11-11 17:34:56 +09:00
mach-netx
mach-nomadik
mach-nspire
mach-omap1 Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-11-18 15:50:07 -08:00
mach-omap2 A few OMAP hwmod fixes for v3.13-rc. One patch fixes some IRQ 2013-12-27 09:51:25 -08:00
mach-orion5x
mach-picoxcell
mach-prima2
mach-pxa ARM: pxa: fix USB gadget driver compilation regression 2013-12-28 15:18:34 -08:00
mach-realview
mach-rockchip ARM: SoC board updates for 3.13 2013-11-11 16:57:16 +09:00
mach-rpc
mach-s3c24xx Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-11-18 15:50:07 -08:00
mach-s3c64xx ARM: s3c64xx: dt: Fix boot failure due to double clock initialization 2013-12-13 21:48:25 -08:00
mach-s5p64x0 ARM: SAMSUNG: Initialize PWM backlight enable_gpio field 2013-10-16 09:05:57 +02:00
mach-s5pc100 ARM: SAMSUNG: Initialize PWM backlight enable_gpio field 2013-10-16 09:05:57 +02:00
mach-s5pv210 pwm: Changes for v3.13-rc1 2013-11-16 12:21:40 -08:00
mach-sa1100 ACPI and power management updates for 3.13-rc1 2013-11-14 13:41:48 +09:00
mach-shmobile ARM: shmobile: bockw: fixup DMA mask 2013-12-19 18:10:26 +09:00
mach-socfpga arm: socfpga: Enable ARM_TWD for socfpga 2013-12-03 14:19:48 -08:00
mach-spear
mach-sti ARM: SoC fixes for 3.13 merge window 2013-11-16 12:45:55 -08:00
mach-sunxi ARM: sunxi: remove .init_time hooks 2013-10-28 10:19:45 -07:00
mach-tegra ARM: tegra: add missing break to fuse initialization code 2013-12-11 17:09:11 -08:00
mach-u300 DeviceTree updates for 3.13. This is a bit larger pull request than 2013-11-12 16:52:17 +09:00
mach-ux500 Revert "ARM: ux500: Stop passing MMC's platform data for Device Tree boots" 2013-11-26 21:02:20 +01:00
mach-versatile
mach-vexpress ARM: vexpress/TC2: Implement MCPM power_down_finish() 2013-11-25 14:12:14 -08:00
mach-virt
mach-vt8500
mach-w90x900
mach-zynq ACPI and power management updates for 3.13-rc1 2013-11-14 13:41:48 +09:00
mm ARM: 7908/1: mm: Fix the arm_dma_limit calculation 2013-12-09 23:24:28 +00:00
net Merge branch 'devel-stable' into for-next 2013-11-12 10:58:59 +00:00
nwfpe
oprofile
plat-iop
plat-omap ARM: OMAP2+: Disable POSTED mode for errata i103 and i767 2013-11-26 15:03:36 -08:00
plat-orion
plat-pxa
plat-samsung pwm: Changes for v3.13-rc1 2013-11-16 12:21:40 -08:00
plat-versatile ARM: vexpress: add big endian support 2013-10-19 20:46:34 +01:00
tools
vfp ARM: 7873/1: vfp: clear vfp_current_hw_state for dying cpu 2013-10-30 22:10:10 +00:00
xen arm/xen: Initialize event channels earlier 2014-01-30 12:52:59 +00:00
Kconfig xen: swiotlb: handle sizeof(dma_addr_t) != sizeof(phys_addr_t) 2014-01-30 12:54:20 +00:00
Kconfig-nommu
Kconfig.debug Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-11-14 08:51:29 +09:00
Makefile Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-11-14 08:51:29 +09:00