/* * Copyright 2014, Michael Ellerman, IBM Corp. * Licensed under GPLv2. */ #ifndef _SELFTESTS_POWERPC_REG_H #define _SELFTESTS_POWERPC_REG_H #define __stringify_1(x) #x #define __stringify(x) __stringify_1(x) #define mfspr(rn) ({unsigned long rval; \ asm volatile("mfspr %0," _str(rn) \ : "=r" (rval)); rval; }) #define mtspr(rn, v) asm volatile("mtspr " _str(rn) ",%0" : \ : "r" ((unsigned long)(v)) \ : "memory") #define mb() asm volatile("sync" : : : "memory"); #define SPRN_MMCR2 769 #define SPRN_MMCRA 770 #define SPRN_MMCR0 779 #define MMCR0_PMAO 0x00000080 #define MMCR0_PMAE 0x04000000 #define MMCR0_FC 0x80000000 #define SPRN_EBBHR 804 #define SPRN_EBBRR 805 #define SPRN_BESCR 806 /* Branch event status & control register */ #define SPRN_BESCRS 800 /* Branch event status & control set (1 bits set to 1) */ #define SPRN_BESCRSU 801 /* Branch event status & control set upper */ #define SPRN_BESCRR 802 /* Branch event status & control REset (1 bits set to 0) */ #define SPRN_BESCRRU 803 /* Branch event status & control REset upper */ #define BESCR_PMEO 0x1 /* PMU Event-based exception Occurred */ #define BESCR_PME (0x1ul << 32) /* PMU Event-based exception Enable */ #define SPRN_PMC1 771 #define SPRN_PMC2 772 #define SPRN_PMC3 773 #define SPRN_PMC4 774 #define SPRN_PMC5 775 #define SPRN_PMC6 776 #define SPRN_SIAR 780 #define SPRN_SDAR 781 #define SPRN_SIER 768 #define SPRN_TEXASR 0x82 /* Transaction Exception and Status Register */ #define SPRN_TFIAR 0x81 /* Transaction Failure Inst Addr */ #define SPRN_TFHAR 0x80 /* Transaction Failure Handler Addr */ #define SPRN_TAR 0x32f /* Target Address Register */ #define SPRN_DSCR_PRIV 0x11 /* Privilege State DSCR */ #define SPRN_DSCR 0x03 /* Data Stream Control Register */ #define SPRN_PPR 896 /* Program Priority Register */ /* TEXASR register bits */ #define TEXASR_FC 0xFE00000000000000 #define TEXASR_FP 0x0100000000000000 #define TEXASR_DA 0x0080000000000000 #define TEXASR_NO 0x0040000000000000 #define TEXASR_FO 0x0020000000000000 #define TEXASR_SIC 0x0010000000000000 #define TEXASR_NTC 0x0008000000000000 #define TEXASR_TC 0x0004000000000000 #define TEXASR_TIC 0x0002000000000000 #define TEXASR_IC 0x0001000000000000 #define TEXASR_IFC 0x0000800000000000 #define TEXASR_ABT 0x0000000100000000 #define TEXASR_SPD 0x0000000080000000 #define TEXASR_HV 0x0000000020000000 #define TEXASR_PR 0x0000000010000000 #define TEXASR_FS 0x0000000008000000 #define TEXASR_TE 0x0000000004000000 #define TEXASR_ROT 0x0000000002000000 /* Vector Instructions */ #define VSX_XX1(xs, ra, rb) (((xs) & 0x1f) << 21 | ((ra) << 16) | \ ((rb) << 11) | (((xs) >> 5))) #define STXVD2X(xs, ra, rb) .long (0x7c000798 | VSX_XX1((xs), (ra), (rb))) #define LXVD2X(xs, ra, rb) .long (0x7c000698 | VSX_XX1((xs), (ra), (rb))) #define ASM_LOAD_GPR_IMMED(_asm_symbol_name_immed) \ "li 14, %[" #_asm_symbol_name_immed "];" \ "li 15, %[" #_asm_symbol_name_immed "];" \ "li 16, %[" #_asm_symbol_name_immed "];" \ "li 17, %[" #_asm_symbol_name_immed "];" \ "li 18, %[" #_asm_symbol_name_immed "];" \ "li 19, %[" #_asm_symbol_name_immed "];" \ "li 20, %[" #_asm_symbol_name_immed "];" \ "li 21, %[" #_asm_symbol_name_immed "];" \ "li 22, %[" #_asm_symbol_name_immed "];" \ "li 23, %[" #_asm_symbol_name_immed "];" \ "li 24, %[" #_asm_symbol_name_immed "];" \ "li 25, %[" #_asm_symbol_name_immed "];" \ "li 26, %[" #_asm_symbol_name_immed "];" \ "li 27, %[" #_asm_symbol_name_immed "];" \ "li 28, %[" #_asm_symbol_name_immed "];" \ "li 29, %[" #_asm_symbol_name_immed "];" \ "li 30, %[" #_asm_symbol_name_immed "];" \ "li 31, %[" #_asm_symbol_name_immed "];" #define ASM_LOAD_FPR_SINGLE_PRECISION(_asm_symbol_name_addr) \ "lfs 0, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 1, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 2, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 3, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 4, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 5, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 6, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 7, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 8, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 9, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 10, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 11, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 12, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 13, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 14, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 15, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 16, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 17, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 18, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 19, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 20, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 21, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 22, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 23, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 24, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 25, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 26, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 27, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 28, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 29, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 30, 0(%[" #_asm_symbol_name_addr "]);" \ "lfs 31, 0(%[" #_asm_symbol_name_addr "]);" #ifndef __ASSEMBLER__ void store_gpr(unsigned long *addr); void load_gpr(unsigned long *addr); void load_fpr_single_precision(float *addr); void store_fpr_single_precision(float *addr); #endif /* end of __ASSEMBLER__ */ #endif /* _SELFTESTS_POWERPC_REG_H */ d34bb6751c874a9c00980552fe508c'>patch) treece6547ef2987fbb289fa28f03536328a42781651 /drivers/usb/chipidea/Kconfig parent191e885a2e130e639bb0c8ee350d7047294f2ce6 (diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea/Kconfig')