mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-03 17:40:04 +00:00
Code Issues Releases Wiki Activity

powerpc fixes for 4.6 #2

Browse source 
- scan_features() updates incorrect bits for REAL_LE from Anton Blanchard
  - Update cpu_user_features2 in scan_features() from Anton Blanchard
  - Update TM user feature bits in scan_features() from Anton Blanchard
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXGfRfAAoJEFHr6jzI4aWAeCQP+wVdFa4Q+T0uFQf/lQBPfQLa
 wDODtskmqwfWk2YqIv3LKTnrkubs8nGy2Vc5Tm27/G/x+uMPOrTD/eoBiG3DH8E3
 eiX1tlqO+oM8dm+g/FxGSCbkWSoYKQrc1QQ1oWtADPPhSm1xU0GYdPqQrDyAfFEr
 JEg5ifOkbTZ3VauuK2kXVxIgNHtwfPoeQfTEmKk7x1Pay0z3zNx65tKInGKmatL8
 7dS+Y8gPNODUfky61M1Y0f/KDwOsBO7gyiIdkkJxnYW1IAqTTsvK90fKPVzSfM0Y
 jnOBdlysIPsiXFNDjT0gBBBRm7McCZO/bZEjK7aSWUMP/FOWIR+HkB3+fpcB+o8u
 tbmMJ8AfHvz4PXzf0h0TySOy6uhA65LJfBnssBoZcCQyxTzdIQC7crDH2639L+8q
 djUYGzWXrplCq/r/uQrogY7a7Ff/UFW76mRMX1lj2hi8lpQEnr7sBPAqwEApgvtr
 WRqBkUjyuTWnnDSnen0NR1QMfh9zMNNjHHBaU+UJv0gU3lBRL+VpmFizsdjVk8/E
 0wC2l1lws3txxaWXGmpJNKve9P2+iEVfY5KAigkKO3yV5xUuwOhtED6sTKqTY5wR
 kp3AC+7fjUxQFJ4g4BVohakie5RR6LkLZ7xCwB0LWPff3LUIiHGelsd+ii1kjxwm
 /tiR9CYEO1O9KcKlwv8X
 =woiB
 -----END PGP SIGNATURE-----

Merge tag 'powerpc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Three powerpc cpu feature fixes from Anton Blanchard:

   - scan_features() updated incorrect bits for REAL_LE

   - update cpu_user_features2 in scan_features()

   - update TM user feature bits in scan_features()"

* tag 'powerpc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: Update TM user feature bits in scan_features()
  powerpc: Update cpu_user_features2 in scan_features()
  powerpc: scan_features() updates incorrect bits for REAL_LE
This commit is contained in:
Linus Torvalds 2016-04-22 10:53:12 -07:00
commit ff061624e1
2 changed files with 16 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
arch/powerpc/include/uapi/asm/cputable.h
View file

@ -31,6 +31,7 @@
#define PPC_FEATURE_PSERIES_PERFMON_COMPAT \
0x00000040
/* Reserved - do not use 0x00000004 */
#define PPC_FEATURE_TRUE_LE 0x00000002
#define PPC_FEATURE_PPC_LE 0x00000001

26
arch/powerpc/kernel/prom.c
View file

@ -148,23 +148,25 @@ static struct ibm_pa_feature {
unsigned long cpu_features; /* CPU_FTR_xxx bit */
unsigned long mmu_features; /* MMU_FTR_xxx bit */
unsigned int cpu_user_ftrs; /* PPC_FEATURE_xxx bit */
unsigned int cpu_user_ftrs2; /* PPC_FEATURE2_xxx bit */
unsigned char pabyte; /* byte number in ibm,pa-features */
unsigned char pabit; /* bit number (big-endian) */
unsigned char invert; /* if 1, pa bit set => clear feature */
} ibm_pa_features[] __initdata = {
{0, 0, PPC_FEATURE_HAS_MMU, 0, 0, 0},
{0, 0, PPC_FEATURE_HAS_FPU, 0, 1, 0},
{CPU_FTR_CTRL, 0, 0, 0, 3, 0},
{CPU_FTR_NOEXECUTE, 0, 0, 0, 6, 0},
{CPU_FTR_NODSISRALIGN, 0, 0, 1, 1, 1},
{0, MMU_FTR_CI_LARGE_PAGE, 0, 1, 2, 0},
{CPU_FTR_REAL_LE, PPC_FEATURE_TRUE_LE, 5, 0, 0},
{0, 0, PPC_FEATURE_HAS_MMU, 0, 0, 0, 0},
{0, 0, PPC_FEATURE_HAS_FPU, 0, 0, 1, 0},
{CPU_FTR_CTRL, 0, 0, 0, 0, 3, 0},
{CPU_FTR_NOEXECUTE, 0, 0, 0, 0, 6, 0},
{CPU_FTR_NODSISRALIGN, 0, 0, 0, 1, 1, 1},
{0, MMU_FTR_CI_LARGE_PAGE, 0, 0, 1, 2, 0},
{CPU_FTR_REAL_LE, 0, PPC_FEATURE_TRUE_LE, 0, 5, 0, 0},
/*
* If the kernel doesn't support TM (ie. CONFIG_PPC_TRANSACTIONAL_MEM=n),
* we don't want to turn on CPU_FTR_TM here, so we use CPU_FTR_TM_COMP
* which is 0 if the kernel doesn't support TM.
* If the kernel doesn't support TM (ie CONFIG_PPC_TRANSACTIONAL_MEM=n),
* we don't want to turn on TM here, so we use the *_COMP versions
* which are 0 if the kernel doesn't support TM.
*/
{CPU_FTR_TM_COMP, 0, 0, 22, 0, 0},
{CPU_FTR_TM_COMP, 0, 0,
PPC_FEATURE2_HTM_COMP|PPC_FEATURE2_HTM_NOSC_COMP, 22, 0, 0},
};
static void __init scan_features(unsigned long node, const unsigned char *ftrs,
@ -195,10 +197,12 @@ static void __init scan_features(unsigned long node, const unsigned char *ftrs,
if (bit ^ fp->invert) {
cur_cpu_spec->cpu_features |= fp->cpu_features;
cur_cpu_spec->cpu_user_features |= fp->cpu_user_ftrs;
cur_cpu_spec->cpu_user_features2 |= fp->cpu_user_ftrs2;
cur_cpu_spec->mmu_features |= fp->mmu_features;
} else {
cur_cpu_spec->cpu_features &= ~fp->cpu_features;
cur_cpu_spec->cpu_user_features &= ~fp->cpu_user_ftrs;
cur_cpu_spec->cpu_user_features2 &= ~fp->cpu_user_ftrs2;
cur_cpu_spec->mmu_features &= ~fp->mmu_features;
}
}