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From: Shaokun Zhang <zhangshaokun@hisilicon.com>
To: <linux-arm-kernel@lists.infradead.org>
Cc: Lingyan Huang <huanglingyan2@huawei.com>,
	Vladimir Murzin <vladimir.murzin@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	"Will Deacon" <will@kernel.org>,
	Shaokun Zhang <zhangshaokun@hisilicon.com>
Subject: [PATCH v2] arm64: SSBS/DIT: print SSBS and DIT bit when printing PSTATE
Date: Wed, 21 Jul 2021 10:43:06 +0800	[thread overview]
Message-ID: <1626835386-30788-1-git-send-email-zhangshaokun@hisilicon.com> (raw)

From: Lingyan Huang <huanglingyan2@huawei.com>

The current code to print PSTATE when generating backtraces does not
include SSBS bit and DIT bit, so add this information.

Cc: Vladimir Murzin <vladimir.murzin@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Lingyan Huang <huanglingyan2@huawei.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
---
ChangeLog:
v1-->v2:
    1. Address Vladimir's comment on update compat_user_mode

 arch/arm64/kernel/process.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index c8989b999250..3da2ad00fa0c 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -163,7 +163,7 @@ static void print_pstate(struct pt_regs *regs)
 	u64 pstate = regs->pstate;
 
 	if (compat_user_mode(regs)) {
-		printk("pstate: %08llx (%c%c%c%c %c %s %s %c%c%c)\n",
+		printk("pstate: %08llx (%c%c%c%c %c %s %s %c%c%c %cPAN %cDIT %cSSBS)\n",
 			pstate,
 			pstate & PSR_AA32_N_BIT ? 'N' : 'n',
 			pstate & PSR_AA32_Z_BIT ? 'Z' : 'z',
@@ -174,12 +174,15 @@ static void print_pstate(struct pt_regs *regs)
 			pstate & PSR_AA32_E_BIT ? "BE" : "LE",
 			pstate & PSR_AA32_A_BIT ? 'A' : 'a',
 			pstate & PSR_AA32_I_BIT ? 'I' : 'i',
-			pstate & PSR_AA32_F_BIT ? 'F' : 'f');
+			pstate & PSR_AA32_F_BIT ? 'F' : 'f',
+			pstate & PSR_AA32_PAN_BIT ? '+' : '-',
+			pstate & PSR_AA32_DIT_BIT ? '+' : '-',
+			pstate & PSR_AA32_SSBS_BIT ? '+' : '-');
 	} else {
 		const char *btype_str = btypes[(pstate & PSR_BTYPE_MASK) >>
 					       PSR_BTYPE_SHIFT];
 
-		printk("pstate: %08llx (%c%c%c%c %c%c%c%c %cPAN %cUAO %cTCO BTYPE=%s)\n",
+		printk("pstate: %08llx (%c%c%c%c %c%c%c%c %cPAN %cUAO %cTCO %cDIT %cSSBS BTYPE=%s)\n",
 			pstate,
 			pstate & PSR_N_BIT ? 'N' : 'n',
 			pstate & PSR_Z_BIT ? 'Z' : 'z',
@@ -192,6 +195,8 @@ static void print_pstate(struct pt_regs *regs)
 			pstate & PSR_PAN_BIT ? '+' : '-',
 			pstate & PSR_UAO_BIT ? '+' : '-',
 			pstate & PSR_TCO_BIT ? '+' : '-',
+			pstate & PSR_DIT_BIT ? '+' : '-',
+			pstate & PSR_SSBS_BIT ? '+' : '-',
 			btype_str);
 	}
 }
-- 
2.7.4


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             reply	other threads:[~2021-07-21  2:45 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-21  2:43 Shaokun Zhang [this message]
2021-07-21  8:31 ` [PATCH v2] arm64: SSBS/DIT: print SSBS and DIT bit when printing PSTATE Vladimir Murzin
2021-07-21 10:25   ` Will Deacon

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