From: Greg KH <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org,
alan@lxorguk.ukuu.org.uk, Cliff Wickman <cpw@sgi.com>,
Ingo Molnar <mingo@kernel.org>
Subject: [ 10/42] x86/uv: Fix UV2 BAU legacy mode
Date: Thu, 14 Jun 2012 16:56:33 -0700 [thread overview]
Message-ID: <20120614235624.784930302@linuxfoundation.org> (raw)
In-Reply-To: <20120614235636.GA5275@kroah.com>
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cliff Wickman <cpw@sgi.com>
commit d5d2d2eea84b0d8450b082edbc3dbde41fb8bfd8 upstream.
The SGI Altix UV2 BAU (Broadcast Assist Unit) as used for
tlb-shootdown (selective broadcast mode) always uses UV2
broadcast descriptor format. There is no need to clear the
'legacy' (UV1) mode, because the hardware always uses UV2 mode
for selective broadcast.
But the BIOS uses general broadcast and legacy mode, and the
hardware pays attention to the legacy mode bit for general
broadcast. So the kernel must not clear that mode bit.
Signed-off-by: Cliff Wickman <cpw@sgi.com>
Link: http://lkml.kernel.org/r/E1SccoO-0002Lh-Cb@eag09.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/include/asm/uv/uv_bau.h | 1 -
arch/x86/platform/uv/tlb_uv.c | 1 -
2 files changed, 2 deletions(-)
--- a/arch/x86/include/asm/uv/uv_bau.h
+++ b/arch/x86/include/asm/uv/uv_bau.h
@@ -149,7 +149,6 @@
/* 4 bits of software ack period */
#define UV2_ACK_MASK 0x7UL
#define UV2_ACK_UNITS_SHFT 3
-#define UV2_LEG_SHFT UV2H_LB_BAU_MISC_CONTROL_USE_LEGACY_DESCRIPTOR_FORMATS_SHFT
#define UV2_EXT_SHFT UV2H_LB_BAU_MISC_CONTROL_ENABLE_EXTENDED_SB_STATUS_SHFT
/*
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1295,7 +1295,6 @@ static void __init enable_timeouts(void)
*/
mmr_image |= (1L << SOFTACK_MSHIFT);
if (is_uv2_hub()) {
- mmr_image &= ~(1L << UV2_LEG_SHFT);
mmr_image |= (1L << UV2_EXT_SHFT);
}
write_mmr_misc_control(pnode, mmr_image);
next prev parent reply other threads:[~2012-06-14 23:56 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-14 23:56 [ 00/42] 3.4.3-stable review Greg KH
2012-06-14 23:56 ` [ 01/42] drm/nouveau/disp: fix dithering not being enabled on some eDP macbooks Greg KH
2012-06-14 23:56 ` [ 02/42] drm/i915: Reset last_retired_head when resetting ring Greg KH
2012-06-14 23:56 ` [ 03/42] char/agp: add another Ironlake host bridge Greg KH
2012-06-14 23:56 ` [ 04/42] btree: fix tree corruption in btree_get_prev() Greg KH
2012-06-14 23:56 ` [ 05/42] powerpc/time: Sanity check of decrementer expiration is necessary Greg KH
2012-06-14 23:56 ` [ 06/42] powerpc: Fix kernel panic during kernel module load Greg KH
2012-06-14 23:56 ` [ 07/42] module_param: stop double-calling parameters Greg KH
2012-06-14 23:56 ` [ 08/42] timekeeping: Fix CLOCK_MONOTONIC inconsistency during leapsecond Greg KH
2012-06-14 23:56 ` [ 09/42] ext4: fix the free blocks calculation for ext3 file systems w/ uninit_bg Greg KH
2012-06-14 23:56 ` Greg KH [this message]
2012-06-14 23:56 ` [ 11/42] x86, MCE, AMD: Make APIC LVT thresholding interrupt optional Greg KH
2012-06-14 23:56 ` [ 12/42] hwrng: atmel-rng - fix race condition leading to repeated bits Greg KH
2012-06-14 23:56 ` [ 13/42] crypto: aesni-intel - fix unaligned cbc decrypt for x86-32 Greg KH
2012-06-14 23:56 ` [ 14/42] drm/ttm: Fix buffer object metadata accounting regression v2 Greg KH
2012-06-14 23:56 ` [ 15/42] Btrfs: fall back to non-inline if we dont have enough space Greg KH
2012-06-14 23:56 ` [ 16/42] iwlwifi: disable WoWLAN if !CONFIG_PM_SLEEP Greg KH
2012-06-14 23:56 ` [ 17/42] iwlwifi: unregister LEDs if mac80211 registration fails Greg KH
2012-06-14 23:56 ` [ 18/42] iwlwifi: dont mess up the SCD when removing a key Greg KH
2012-06-14 23:56 ` [ 19/42] iwlwifi: disable the buggy chain extension feature in HW Greg KH
2012-06-14 23:56 ` [ 20/42] mac80211: fix error in station state transitions during reconfig Greg KH
2012-06-14 23:56 ` [ 21/42] mac80211: clean up remain-on-channel on interface stop Greg KH
2012-06-14 23:56 ` [ 22/42] mac80211: fix non RCU-safe sta_list manipulation Greg KH
2012-06-14 23:56 ` [ 23/42] ASoC: wm8994: Ensure all AIFnCLK events are run from the _late variants Greg KH
2012-06-14 23:56 ` [ 24/42] ASoC: wm8994: Apply volume updates with clocks enabled Greg KH
2012-06-14 23:56 ` [ 25/42] bcma: add ext PA workaround for BCM4331 and BCM43431 Greg KH
2012-06-14 23:56 ` [ 26/42] ALSA: HDA: Pin fixup for Zotac Z68 motherboard Greg KH
2012-06-14 23:56 ` [ 27/42] cfg80211: fix interface combinations check Greg KH
2012-06-14 23:56 ` [ 28/42] rt2x00: use atomic variable for seqno Greg KH
2012-06-14 23:56 ` [ 29/42] wireless: rt2x00: rt2800usb add more devices ids Greg KH
2012-06-14 23:56 ` [ 30/42] wireless: rt2x00: rt2800usb more devices were identified Greg KH
2012-06-14 23:56 ` [ 31/42] net: sierra_net: device IDs for Aircard 320U++ Greg KH
2012-06-14 23:56 ` [ 32/42] can: c_can: fix "BUG! echo_skb is occupied!" during transmit Greg KH
2012-06-14 23:56 ` [ 33/42] can: c_can: fix an interrupt thrash issue with c_can driver Greg KH
2012-06-14 23:56 ` [ 34/42] can: c_can: fix race condition in c_can_open() Greg KH
2012-06-14 23:56 ` [ 35/42] gma500: dont register the ACPI video bus Greg KH
2012-06-14 23:56 ` [ 36/42] acpi_video: fix leaking PCI references Greg KH
2012-06-14 23:57 ` [ 37/42] sched: Fix the relax_domain_level boot parameter Greg KH
2012-06-14 23:57 ` [ 38/42] drm/radeon: fix tiling and command stream checking on evergreen v3 Greg KH
2012-06-14 23:57 ` [ 39/42] drm/i915: Mark the ringbuffers as being in the GTT domain Greg KH
2012-06-14 23:57 ` [ 40/42] fuse: fix stat call on 32 bit platforms Greg KH
2012-06-14 23:57 ` [ 41/42] libata: add a host flag to ignore detected ATA devices Greg KH
2012-06-14 23:57 ` [ 42/42] ata_piix: defer disks to the Hyper-V drivers by default Greg KH
2012-06-15 11:16 ` From all Hyper-V admins: Big thanks! Re: [ 41/42] libata + [ 42/42] ata_piix: defer disks to the Hyper-V drivers by default has been added to the 3.4-stable tree Victor Miasnikov
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